StarTuned Magazine August 2012. Featured content: Scan Tools, TPC: The Pressure is Controlled, Mobil 1.

1. STARTUNED
Information for the Independent Mercedes-Benz Service Professional
August 2012 U.S. s6.00 €9.00 Volume 12 Number 3
GETTING THE MOST SECOND TIME AROUND
Hi
Mercedes-Benz
•

2. startekinfo.com
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3. TO OUR READERS: IN THIS ISSUE
Welcome to STARTUNED, the magazine for independent service
technicians working on Mercedes-Benz vehicles. Your Mercedes-
Benz dealer sponsors STARTUNED and provides the information 4 GETTING THE MOST
coming your way in each issue.
Mercedes-Benz wants to present the information you need to know Nowhere is technological sophistication
to diagnose and repair Mercedes-Benz vehicles accurately, quickly more evident than in automotive
and the first time; text, graphics, on-line and other technical
sources combine to make this possible. entertainment systems. These days, a
Feature articles, derived from approved company sources, focus on Mercedes-Benz has so much more than a
being useful and interesting. radio and CD player. Interconnectivity with
Our digest of technical information can help you solve
unanticipated problems quickly and expertly. peripherals, DVD, GPS, and Navigation make
We want STARTUNED to be both helpful and informative, a lot of information available to the vehicle's
so please let us know just what kinds of features and other occupants. How do we keep this going?
diagnostic services you'd like to see in it. We'll continue to bring
you selected service bulletins from Mercedes-Benz and articles
covering the different systems on these vehicles.
Send your suggestions, questions or comments to us at:
STARTUNED
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Phone: 1 800 225 6262, ext. 7112 12 SCAN TOOLS
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Is your choice of diagnostic tooling in
STARTUNED is a publication of Mercedes-Benz USA, LLC ("MBUSA"). No part of this collision repair helping or limiting you?
magazine may be reproduced without the express written permission of MBUSA.
Editorial and Circulation Offices: 134B River Road, Montague, NJ 07827.
CAUTION: Vehicle servicing performed by untrained persons could result in serious injury to
those persons or others. Information contained in this magazine is intended for use by trained,
professional auto repair technicians ONLY. This information is provided to inform these technicians
of conditions which may occur in some vehicles or to provide information which could assist them
in proper servicing of these vehicles. Properly trained technicians have the equipment, tools, safety
instructions, and know-how to perform repairs correctlyandsafely. If a ccndition is described, DO
NOT assume that a topic covered in these pages automatically applies to your vehicle or that your
vehicle has that condition. STARTUNED is a registered trademark of MBUSA. 20 SECOND TIME AROUND
Secondary air systems are designed to help
Group Publisher Contributing Editor
the catalytic converter get up to operating
Christopher M. Ayers, Jr. Tom Nash temperature faster. When the system
cayersfautomotivedatamedia.com tnash@automotivedatamedia.com
develops a problem, the ME control unit is
Editorial Director MBUSA Technical Content Advisor capable of defining the fault. It's our job to
Bob Freudenberger Donald Rotolo
bfreud@automotivedatamedia.com Donald.Rotolo@mbusa.com figure out the cause.
Contributing Editor MBUSA Project Manager
Bob Chabot Adam Green
bchabot@automotivedatamedia.com adam.green@mbusa.com
Contributing Editor Art Director & Circulation Mgr.
Kerry Jonsson Christopher M. Ayers III
kjonnson@automotivedatamedia.com ayersc3@automotivedatamedia.com
30 TPC: THE PRESSURE IS CONTROLLED
In an effort to increase the safety of the
Visit us at our web site driving public, Tire Pressure Monitoring
www.MBWholesaleParts.com to view this issue and all past Systems (TPMS, Mercedes-Benz TPC) warn
issues of StarTuned, along with a wealth of information on the driver when tire pressure is low and
Genuine Mercedes-Benz Parts. may cause tire failure. When the system
needs maintenance, it's our responsibility
To locate a Mercedes-Benz dealer near you, to repair this important safety tool.
go to www.mbusa.com.

4. GETTING THE
MOST
Nowhere is technological sophistication more evident
than in automotive entertainment systems. These days, a
Mercedes-Benz has so much more than a radio and CD
player. Interconnectivity with peripherals, DVD, GPS,
and Navigation make a lot of information available to the
vehicles occupants. How do we keep this going?
M M !

5. People who purchase Mercedes-Benz vehicles needs are different. You know from you digital
do so because they want something exceptional. camera and video recorder that high-resolution
Exceptional performance, exceptional safety, and files are huge. It is not critical that the information
exceptional technology are only some of the reasons run at real-time speeds because buffers can store
behind this. Nowhere is this more evident than in the information temporarily. But there is a lot of
the entertainment and navigation systems. Engine information that needs to move around. A new form
management, ABS, stability control, etc. all have of transporting this information was necessary for
to process information at high speed to make them these systems to function the way Mercedes-Benz
function as closely to real-time as possible. When owners expect.
it comes to media-based information systems, the
LIGHT SPEED
The answer to this digital data transfer problem
is fiber-optics, which can channel large amounts
of data quickly and accurately. They can operate in
temperatures from -40 deg. to 85 deg. C, so they
can easily withstand the interior environment of a
vehicle. A fiber-optic cable can handle up to 20MB
of data per second through light pulses, which must
be shielded or the light will refract out of the path.
Reflective cladding protects the light signal, and
is also insulated with an orange outer jacket. This
ensures that the pulses of light stay within the
confines of the cable core.
Using a fiber-optic network has more benefits
than just being able to move around large amounts
of data. Light pulses are impervious to electro-
magnetic interference. This means the cables can
be run through the vehicle with the wiring harness
and high current flow will not distort the signal.
Fiber-optic cable is lighter than metal wiring
and requires fewer connections. Unfortunately,
fewer connections means the cables are not easily
serviceable. It takes special equipment to sever a
connection and re-attach it. Most of the time, it is
easier to replace the entire cable rather than repair
it, depending on the extent of the damage.
Mercedes-Benz implemented its version of a
fiber-optic network called the Domestic Digital Bus
(D2B). D2B operates the sound system, CD Changer,
cellular telephone (now digital), voice recognition (if
the car is so equipped), and Tele Aid control units.
These features communicate with one another
through an optical and electrical network. D2B
transfers data at 5.6MB per second, well within the
limits of the cable.
This network follows slightly different rules
from the electrical networks you are used to. Most
August 2012 5

6. KCML
conventional CAN systems are wired in parallel
with each control unit transmitting and receiving
data according to priority. The D2B bus, like all
fiber-optic networks, is not connected in parallel.
It is connected in a "ring." The optical signal
originates from a master and is sent to the second
component in the ring through the cable. A second
fiber-optic cable leaves the second component and
carries the signal on to the third component, and
so on. The final component sends the signal back
to the master to complete the ring. A complete
ring is required for the D2B to function. If there
is a break anywhere in the ring, none of the
components will function.
EARLY TO BED, EARLY TO RISE
Fiber-optic components draw a high amount of
electrical current to operate. Not only do they have Here are two MOST connectors that plug into the CD
to perform their function, but they also have to changer. There is a three-pin electrical connector
convert electrical signals to light pulses and send for power, ground, and wake-up signal. The two-pin
them to the next component. It also has to receive plug is for the fiber-optic cable. One cable brings the
signals and interpret these light pulses coming from light-pulse message in, and the second cable sends
it out to the next component.
6 Mercedes-Benz StarTuned

7. the previous component. When the system is shut put out on both the fiber and electrical networks.
down, each component has to be put into sleep mode. Each control unit that wakes up sends a response
This requires a wake-up signal when the ignition signal on both networks as well. The master of the
key is turned on. This wake-up is achieved with D2B monitors the response from the control units on
both a fiber-optic signal and through the electrical the electrical network and compares it to the fiber-
star network. Each component needs to be signaled optic side. If all the control units respond on the
in its order in the ring. This is important when electrical network, but only two out of five respond
replacing or retrofitting components. When the on the fiber-optic network, the master can determine
master is coded, it is vital that each component is that the failure is between components 3 and 4 or
added in order starting from when the ring leaves component number 3 has failed to issue a fiber-optic
the master. This will affect how the master wakes signal. Remember, the fiber-optic wake-up signal
up the D2B network. If the coding is incorrect, must have made it to components 2 and 3 because
none of the components in the system will work. On they responded on the electrical network, but could
older vehicle, the master can be the radio, Command not respond on the fiber-optic. Components 4 and 5
Console, or the navigation MCS unit. responded on the fiber-optic network, but 3 did not.
Therefore, the problem with the fiber-optic network
In an effort to assist with self-diagnostics, both must be between component 3 and 4.
the fiber-optic network and the electrical network
are not only awakened by the master, but each ONWARD AND UPWARD
component also answers back on both networks. The next evolution of the fiber-optic network
Specialized equipment is required to monitor the is referred to as the MOST (Media Oriented
fiber-optic signal. Mercedes-Benz dealerships use System Transport) bus. The layout of the system
a D2B tester manufactured by Berger Electronics. has changed to incorporate more sophisticated
It is capable of testing the integrity of the light electronics, but the basic structure and principles
signal at the connector. In the absence of this tool, are still the same. The MOST bus incorporated
you can use the vehicle's existing self-diagnostic a whole host of improvements. It is a standard
capability to help find the problem component or protocol that is used by multiple manufacturers for
cable. As mentioned earlier, the wake up signal is their entertainment systems. This means a greater
Vehicle 170.447 Control unit AUDIO
Specified configuration D2B components
Coding
Component 1 Vacant
Note: The existing D2B components are coded in the specified Sound system
configuration. CD changer
Radio
Voice control system
Cellular telephone 1
Cellular telephone 2
SDAR
Vacant
Using the SDS, you can add a CD changer in the second slot of the D2B. With the SDS, go into the audio
master, which in this case is the radio, and under the retrofitting heading select the components you
want to add to the fiber-optic ring. Otherwise, the audio master will not wake up the CD changer and start
communicating with it.
August 2012 7

8. number of component options are available from A new development with the MOST bus is the
numerous manufacturers of electronics. Mercedes- watchdog function. If a component on the ring has
Benz started integrating this new protocol with the a failure, it is possible to put that component in
211 chassis in 2003. Not all Mercedes-Benz vehicles watchdog mode. This mode allows the malfunctioning
converted to the MOST bus, but it is being added to unit to serve as a repeater and allow the optical
more and more vehicles as they develop. The D2B signal to continue on and complete the ring.
bus was limited to a maximum of six components in
the ring. With the MOST system, it currently runs On the older D2B network, the control unit head is
about 16 components, but you can have up to 64 the master of the entire network. Now, for the first
in the ring. Also, network speed has improved to generation of the MOST network an Audio Gateway
24.8Mbps, but can handle speeds up to 50Mbps. Module (AGW). or an Audio 20 is in charge of all
the other components. The Audio 20 is the display
®
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1ercedes-Benz StarTuned

9. head in the vehicle, but the AGW can be mounted bus and the star configuration electrical network.
anywhere. After 2005, the second generation of the The master monitors the ring performance and sets
MOST bus incorporates the master back into the self-diagnostic fault codes if problems are found. The
head unit as in the Audio 20. Either unit holds the master is also responsible for transmitting this self-
ring configuration in its coding. This means you diagnostic information to the other CAN networks.
can retrofit or remove components from the ring Your SDS does not directly connect to the MOST bus,
as your customer desires. There are many more but it can communicate with the master and access
components on the ring, and therefore there are it for diagnostic purposes. The master also has
many more options. Like the D2B bus, the master many other functions.
still sends an optic and electrical wake-up signal
to each component in the ring. Each component WHO IS I N CONTROL?
still responds back both through the fiber-optic The AGW has many different configurations
depending on the equipment level of the vehicle.
As an example, the AGW may
} Sitemap • H*lp have the sound amplifier built
? Abbreviations into it, or the vehicle may have a
separate sound amplifier. If the
amplifier is built into the unit,
the speakers will be wired to it.
It will also have the radio tuner
built into it. The radio tuner
is not built into the display as
with the older D2B network. The
head unit only functions as a
display and operator interface.
When the driver changes the
radio station or volume through
the head unit, this information
is passed onto the AGW through
the fiber-optic network. The
electrical network is only to
wake up the system, put it
to sleep, and assist in self-
diagnostic functions.
With a paid subscription to
Startekinfo.com, you can access
a fiber-optic cable diagram. This
allows you to see the possible
connections and the order the
components are supposed to
be in illustrated by the orange
wires. The lower part of the
diagram illustrates the electrical
Model 230 star wake-up network with the
blue wiring.
August 2012 9

10. The AGW can be "reflashed" as changes and goes down. You need to know all of the different
improvement are made to the MOST bus. If you have components in the vehicle, but if they are not
intermittent problems with MOST bus components, communicating then you cannot use the SDS to tell
you should check for software updates under you the layout of the ring. You can get a fiber-optic
diagnostic technical bulletins on the Mercedes-Benz diagram in the ETM on Startekinfo.com.
service website www.startekinfo.com. With a paid
subscription to Startekinfo and your SDS, you can You should start off by quickly checking the
reprogram the AGW as updates become available. power supply to the D2B or MOST master. Checking
If the system is malfunctioning, you will still need fuses first makes sense. The next step would be to
to look at self-diagnostic information and verify see if the master is transmitting data on the fiber-
that you have power and ground to any component optic network. You can physically go to the next
malfunctioning on the MOST bus. component on the list and unplug the fiber-optic
connector. Look at the connector and turn on the
Other components on the MOST network are the ignition key.
Head Unit, multiple disc CD changer, navigation,
satellite radio receiver, hands free module/voice In the case of the D2B network, the master
control system, TeleAid including GPS, and optional attempts to start the ring up to four times. This
external amplifier. These components are sometimes means you should see four light pulses at the second
referred to as bus slaves, taking their orders from component in the ring. Once you have verified this
the master. All of these units are capable of putting you can move onto the next component and perform
out an electrical wake-up signal unlike the D2B the same test. Move onto the next component
until you no longer see the red light pulse at the
network. They are also all capable of performing
connector. This means either the fiber-optic cable
self-diagnosis of their own operation and report
is damaged, the component it is coming from has
their findings to the master unit. This way, the
failed or has lost its power or ground supply. In
SDS can interrogate the master for problems in the
the case of the MOST bus, the ring start from the
MOST bus. Within the software of the SDS and all
master is nine pulses of red light. Move onto the
of the components of the MOST bus is a diagnostic
next component in the ring and recheck the optical
wake-up feature that checks the entire system. As
start signal. Obviously, since there are many more
mentioned earlier, the master and you both need to
components in the MOST network this can be quite
know the order of each of these slaves relative to
time-consuming, which is why the SDS is such
the master unit. You can find this information by
an invaluable tool when diagnosing MOST bus
looking at the coding of the master with your SDS.
problems. There are two special tools available from
Each of these components has a built-in temperature Mercedes-Benz to bypass components in both the
sensor. They will not function over 194 deg. R, D2B and MOST networks. These bypass connectors
so the MOST system may not work right away if plug into the fiber-optic plug of the component you
the vehicle has been parked out in the sun where want to bypass. This will keep the ring complete
interior temperatures can get quite hot during the and allow it to function without the bad component.
summer months. If you find you have a problem with the electrical
bus, you can unplug the buss bar that links this
How ARE W E GOING TO FIX I T ? network together and test each wire individually for
Now that you know the basic layout, function, a short to power or ground, or an open circuit.
and operation of the D2B and MOST bus networks,
you will need to have a diagnostic plan if you are Although the D2B and MOST bus systems are
to proceed in a cost-effective manner. Since these technologically advanced, understanding the basic
systems are complicated, self-diagnostics with a layout of a fiber-optic network and the electrical
capable SDS scan tool are essential to speed up network that supports it will help you isolate
troubleshooting. There are some basic steps you can problems . If you use your SDS, you can reduce
perform as well. Remember, when any component your diagnostic time and come up with a more
fails on the fiber-optic network the entire network accurate answer. I
10 Mercedes-Benz StarTuned

11. ^^mmm i 0
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Like Chip Foose,
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The C h e m i c a l C o m p a m for over ten years. To learn more, visit www.basfrefinish.com or call 1 -800-825-3000.

12. r-
an Tools
An Essential Part Of Collision Repair
V I I I I I B m SB mm
Is your choice of diagnostic
tooling in collision repair
helping or limiting you?
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12 Mercedes-Benz StarTuned

13. If you're in the business of repairing Mercedes- post-repair vehicle performance and occupant safety
Benz vehicles following an accident, you are now in can be seriously compromised.
the vehicle diagnostics business - like it or not. Like
your mechanical brethren, being repair-ready and Let's have a look at diagnostic scan tools basics,
competitive in the marketplace today requires it. It's some Mercedes-Benz resources available and several
that simple. But that doesn't make it easy. case studies specific to the marque that will help
collision facilities better understand why proper
If you are not already using - or relying on tooling is critical to their survival and future growth.
someone who is - the M-B Star Diagnostic System
(SDS), Xentry Diagnostics subscription-based ELECTRONIC COMPLEXITY DRIVES SCAN
software, and other factory-approved diagnostic tools TOOLS INTO THE COLLISION REPAIR PROCESS
during Mercedes-Benz collision repairs, the ability Many aspects of modern collision repair of
of your facility and technicians to provide customers Mercedes-Benz vehicles require access to and the
with a complete job is limited, regardless of your use of genuine resources for service information,
experience and accumulated skillsets. Moreover training, collision repair procedures, equipment and
HB^Bi
'AG [ FAQ I Contact j T&C | Sprache/lar>guao«
» Star Diagnosis basic'
Star Diagnosis products
Star Diagnosis compact "
• Star Diagnosis SDconnoct
BBSEBI
Password
• Onlino Maximum Speed
> Login j
1 Forgotten your password?
» Service & Supper. • Rogister
» Orrfor Contacts
• Xontry Diagnosis solutions
• Access DS8
t- Access WobPans
Professional troubleshooting and diagnosis • Access to "Special Tools"
Star Diagnosis offers a broad spectrum of the most modem vehicle diagnosis and maintenance features for a wide • Access Tochlnfo-Shop
range of vehicles • Find a Renter
• Mercedes-Benz passenger cars
• National Information
• Mercedes-Benz commercial vehicles {trucks UNIMOG. vans, buses)
• smart
• EvoBus fW'^Ht - !**Q ;lpwp«Bj|«pMMM|
• Maybach and SLR
With Star Diagnosis compact . we provide a versatile high-performance diagnostic device for implementation • Compare Star Diagrosrs
basic' ond Star Diagnosis
compacM
according to your needs! The Star Diagnosis basic* version has reached the end of its product life cycle and can
Access our therefore no longer be ordered as of May 2010.
TRAINING PRINT FILES!
The advantages of our Star Diagnosis products at a glance:
.06 by Mercedes-Bor-z USA LLC. for use in conjunct on with d&m w * v ce • Fast and reliable troubleshooting of vehicle faults and malfunctions
• High-performance software appicanons thai aid in the repair of faults
and parts specified by Vorcedes-Benz f c use m d-'-agnosis a^d repair of
- Intelligent diagnostics system specially designed for work with Mercedes-Benz original parts
:ondod to represent e : ; available information portajrvng to models referene&d her&ti • Simple, user-friendly operation
•fo- r.'execes-Benz o w r o ' 3 a n d i r d e p e n c e n t r e p a ' t a c r t e s , A 5 ntended s o e l y • Comprehensive support and service features
raned and qua f . e d to pe r form work or. f / e ' c e c e s - B o r z v e n u e s anc w h o have
i necessary tools, gcu^pmert a n d 'iteraiu.ro. required to o o ' t o r r t service and reoa '
JO'S and e o j p m e r t . a^d ta<o a'l necessary and p r v a e r ! p ' o c a u t o ^ s . tnatwoukJ 0©
B lechncian. and failure io follow sfl safety g j i c e nes .n these ar-d other sorVrce
^Bgo. per&onol Hjury of death Th 3 pub cation is not intended for n s t r v c i o r n
s vehicles by persons wi/>out appropriate p r o f e s s e s ! t r a c i n g and e x p e r e n c e in
snz veh cles Mercedes-Benz USA. LLC assumes no iiabi' ty for m;ury. damage or
f o ' m a t o i a^d resen.es the right l o revise th.s information at any t m e w.thout not co
D respons b ; ty for erro's a^d/or om &s on5 n ins n f o r m a t o n contameo r<o-o -.
: rghts reserved Reproduction or iransmiss.on by any means, electronic or
>art. is not permitted without the prior written authorization of M e x e d o s - B e n z USA.
specific PDFs or access to the The Mercedes-Benz Portal describes various Mercedes-Benz Star Diagnostic
Mercedes-BenzUSA Online System (SDS) hardware and software products, as well as the advantages
Store for model-specific CDs provided to technicians. Visit http://service-pajts.mercedes-benz.cgm, then
with more detailed information. click the "Diagnostics" tab to learn more. (Images -Mercedes-BenzUSA LLC)
August 2012 13

14. .".-.'{fflsumt--&.
tools are essential to effect a complete, safe repair. This trend is also gaining traction. Emerging
For example, recent changes in the mix of materials electronic systems will continue to push the need
used to manufacture vehicle structures (e.g. for scan tools and other diagnostic equipment.
advanced high-strength metals and carbon fiber- Examples include engine management, passive
reinforced plastic) have resulted in Mercedes-Benz- and active safety, electrified drivetrains, electronic
specific changes in repair techniques, procedures, power steering, alignment, sophisticated
tools, and more. communication networks, and other vehicle systems
that may be damaged in an accident. Because these
However, accelerating vehicle complexity is not vehicle systems are interconnected, their proper
just limited to structure. Vehicles just a decade operation and performance post-repair requires an
ago were composed of mostly mild steel; they early and accurate diagnosis for collision-induced
also contained only a few electronic control units damage to these systems.
(ECUs) - those computerized modules that control
functionality of various vehicle systems. Today, But unlike replacing a structural part, even if
however, it's not uncommon for new Mercedes-Benz an electronic part is properly diagnosed as being
vehicles to have 50 or more electronic modules faulty, replaced, and properly positioned it will often
onboard; some high-end luxury models may even require initialization, reprogramming, or some other
exceed 70 units. This proliferation of ECUs, as well specified procedure to complete the repair. This
as associated sensors, actuators, and other devices requires proper diagnostic equipment and software.
is driving the collision industry to join the scan
tool revolution. WHAT'S IN YOUR SCAN TOOL?
A recent survey by
the Equipment and Tool
Institute (ETI) reported that
approximately two-thirds
of all collision facilities
own and use at least one
scan tool. For those who
don't know ETI, it is the
industry organization
that communicates with
Mercedes-Benz and other
automakers to acquire
and archive scan tool data
- algorithms, protocol
documents, parameter
identifier matrices,
diagnostic trouble codes, etc.
Aftermarket tool and
equipment manufacturers
pay a licensing fee or
annual dues to ETI to use
The Mercedes-Benz STAR Diagnostic System (SDS) Compact4 scan tool (above)
selected data to develop and
along with SDS Flash subscriptions are essential to providing a complete
build aftermarket electronic
collision repair. The Compact4 uses a vehicle's VIN to register and verify
test equipment and other
vehicle-specific hardware and software data into Mercedes-Benz's server, so
that Mercedes-Benz knows exactly the configuration of each vehicle. This is
tools used for diagnostics
crucial, since there are often various recall-based issues that require such and repair. When
knowledge and the company requires it of all electronic modules to provide genuine gaps in scan tool
recalibration, reprogramming, and other services, (image - continental imports) information are discerned,
14 Mercedes-Benz StarTuned

15. ETI works with Mercedes-Benz, as it does with other the aftermarket has become a greater focus of what
automakers, to gather the data and pass it on. ETI does," Gorman adds. "In the case of diagnostic
scan tools, we're talking about the computer data
"Be it Mercedes-Benz or any other OEM, factory that needs to be integrated into an aftermarket scan
scan tools are the most expensive diagnostic tools tool so that technicians can talk to the vehicle and
available, but they also have the most diagnostic emulate an automaker's factory tool.
and repair functionality for any automaker's
vehicles," explains Charlie Gorman, ETI executive It's important that facilities and technicians
director. "In the case of Mercedes-Benz and some understand that scan tool functionality is almost
other automakers, subscription-based diagnostic always the result of choices made by aftermarket
software is also required in addition to the scan tool manufacturers, not the lack of data being available
hardware. It's often the software that needs to be from automakers," he notes. "On rare occasions when
fixed during a repair - whether by reinitializing, bona fide data gaps are identified, ETI works with
reprogramming or recalibrating functionality. Mercedes-Benz to resolve them for everyone's benefit.
"With the advent of more ECUs on vehicles, the "While aftermarket scan tool manufacturers
provision of scan tool information by automakers to all get access to the same data streams as the
REMOTE DIAGNOSTICS SCHEMATIC
Hluelmk Software Tools
Diagnostics at a Fraction of the Cost
Body shops and collision technicians can get bogged down by a lack of knowledge, technical resources,
the time clock, and the customer. Typically, problematic vehicles are sent to a dealer or a mobile diagnostic
service provider is called in. Both can add time and cost to the collision repair.
"Remote diagnostics" is a new alternative that might be the right fit for collision facilities seeking to
recapture the time and revenue lost by sending vehicles out to dealers or waiting for a mobile diagnostician
to arrive. Robert Beckman, CEO of Blue Link Diagnostic Solutions Inc. says the "just in time" solution,
developed in conjunction with IBM:
• Leverages J-2534 interface devices, which Mercedes-Benz supports, to connect Mercedes-Benz
vehicles in your body shop digitally to Mercedes-Benz diagnostic tools, software and equipment
at a remote location, at a fraction of the capital costs that tooling up to factory level capability
would entail.
• Allows vehicles in a body shop to be diagnosed and repaired immediately onsite.
• Provides affordable access to genuine Mercedes-Benz service information and other resources.
• Utilizes the expertise of highly specialized technicians who have a thorough understanding of
and experience using Mercedes-Benz service diagnostics.
More information about this service can be found at www.bluelinkdiag. com, (images - BiueUnk Diagnostic solution
August 2012 15

16. Mercedes-Benz Rem
m {
Mercedes-Benz
The best or nothing.
uality, Reliability ana vame
Reman A/C Compressors are not rebuilt or refurbished, they are brought back to
the exact Mercedes-Benz approved specifications and tolerances, thus ensuring
optimal performance.
Additionally, these units come preassembled with the clutch attached, so a
technician can get right to installing the entire assembly, saving time and money.
By using Genuine Mercedes-Benz Remanufactured Compressors, you could save
40% or more when compared to the cost of new. And like all of our remanufactured
parts, it's covered by the Mercedes-Benz limited parts warranty.
Genuine Remanufactured installed. Mercedes-Bar ?SHfiS3B?«*»
Problem solved!
For more information, visit www.mbwholesaIeparts.com.

17. GENUINE MERCEDES-BENZ
REMAN A/C COMPRESSORS
REMAN PART MODEL REMAN PART
VEHICLE MODEL VEHICLE MODEL
NUMBER YEAR NUMBER
1984-1992 190D2.2 A000230121180 CL600, CL65 AMG,
2000-2006 A001230011180
S65 AMG, S600
260E, 190D2.5, 300TD,
1984-2002 A000230241180 2000-2009 E320, S350 A000230911180
300D,300CE, SL500
420SEL, 560SEC/SEL, 2002-2007 C32 AMG A000230781180
1986-1991 A000230251180
560SL A000230971180
2002-2007 C230 CL 1.8
1986-1995 190/300 series, E300D A000230111180
CLK-Class, C55 AMG,
2002-2010 A001230191180
300E, 300CE, 600SL, SLK55 AMG
1986-2002 A000230051180
SL600 2003-2009 CLK500 A001230161180
1990-2002 500SL, SL500 A000230061180 2003-2010 SL55 AMG A001230021180
1992-1993 A119230111180 E55 AMG, E320, E500,
2003-2010 A00123012U80
CLS500
400SE, 400SEL, 500SEC;
1992-1995 A11923000I180 E-Class, CLS55 AMG,
S420,S500 2003-2010 A001230141180
CLS550
600SEL, S320, S600,
1992-1999 A000230171180
300SEL 2003-2010 A001230551180
300SE, 600SEC, S600, SLK280, SLK300,
1992-1999 A000230221180 2005-2010 A001230541180
S320, CL600 SLK350
CL500, 300/400/500 R350, R500, ML350,
1992-2004 series, S/SLK/C/CLK/ A000230701180 2006-2010 ML500, ML550, GL450, A001230871180
GL550
1994-2000 C220, C280, €36 AMG A000230131180 R350, R500, ML350,
2006-2010 ML500, ML550, GL450, A002230521180
ML320, ML430, GL550
1998-2005 A000230681180
ML55 AMG
2009-2010 C300, C350 A001230501180
1998-2010 ML500, ML350 A001230281180
2010 GLK350 A002230311180
ML350, ML500, E500,
1998-2010 A000230901180 A002230381180
SL500, C/CL/S/G-Clas! 2010 E350, E550
*Made with the same OE components
as original factory parts
*Assembled to original
Mercedes-Benz specifications
* Results: Mercedes-Benz Quality,
Reliability and Value
Remanufactured for Mercedes-Benz by
Available only through your local Mercedes-Benz Dealei

18. Mercedes-Benz factory tool uses, they cannot remote diagnostic service providers to
effectively replicate the full Mercedes-Benz tool assist with more complex diagnostics
and still be price-competitive. Instead, each and software programming. This
manufacturer makes its own marketing decisions enables a complete repair, but doesn't
about what features, data, and functionality goes in provide a facility with direct control of
their tools and what doesn't - based on niche, price its time or destiny.
point, and other factors," says Gorman.
• Own Mercedes-Benz tooling and software,
"For example, some companies will build a but may not have mastered the full
generic scan tool that covers a wide range of capability of the tools yet. Training from
OEMs for the most common fixes; some may offer Mercedes-Benz can help grow expertise.
slightly more comprehensive functionality for a
narrower specific group of OEMs (European, Asian • Own Mercedes-Benz tooling and
or domestic automakers); some will concentrate on software, and acquired the expertise
a specific automaker and provide greater, although through Mercedes-Benz training to use
not complete, functionality; and others will focus the tooling to its full capability.
on specific functions such as diagnostic tools for These scenarios prompt three questions. First,
alignment or tire pressure monitoring systems." does a collision facility know what necessary
functionality its aftermarket scan tool does not have
WHAT'S A BODY SHOP TO DO?
before making repairs? Second, if an outside source
While a Mercedes-Benz factory scan tool and for Mercedes-Benz tooling is used, does that source
subscription-based software provide the most have the understanding, expertise, and access to
complete functionality for electronic-related collision software updates to make full use of the tools?
repairs, not every facility can afford them. Given the Third, if no Mercedes-Benz tooling is used, either
high cost of factory versus aftermarket tooling, the directly or indirectly, what hasn't a collision facility
purchase of a scan tool by a collision facility needs fully repaired?
to fit the body shop's business model. The challenge
is for a collision facility to use the best scan tool There is also a caveat to keep in mind: Using
strategy it can afford, then fill any collision service stop-gap measures may work for the short-term.
gaps with sources that have Mercedes-Benz factory However, in addition to giving up direct control,
diagnostic tools and software and the expertise to it does not diminish the full responsibility for a
use them. complete repair. In addition, because diagnostic-
related repairs are not readily visible during the
With respect to scan tools and diagnostics,
estimating stage, supplemental approvals for work
collision facility scan tool practices generally fall and parts beyond the original estimate may be
into one of five broad categories. A body shop may: necessary, which may mean a delay in total repair
• Own no scan tools, electing to farm all time. For collision facilities and their technicians,
related work out to a nearby independent it's becoming increasingly critical to be able to not
shops or dealers with the access to just make all structural repairs, but all electronic
service information, tooling, training, repairs as well.
and expertise.
"Radical change began in 1981 when the computer
• Own aftermarket scan tools only, but came onboard on every vehicle," one senior trainer
be unaware that certain functionality is tells us. "Yet only 10 percent of body shops that I
missing, thus limiting the ability to make have surveyed recently actually use OEM factory
a complete repair. tools; and just five percent of shops own and use a
J-2534 interface tool to reflash electronic modules."
• Own aftermarket scan tools only, but be
aware of what specific functionality is While the cost of Mercedes-Benz tooling is a
lacking, and rely on "expert" mobile or serious consideration, the opportunities lost and
18 Mercedes-Benz StarTuned

19. the assumed risks of choosing not to invest in such talked with two expert technicians to provide a few
tools to be fully competent and in direct control of examples to demonstrate this. They are:
one's expertise should not be neglected, either. For
example, outsourced expertise must be invoiced at • Robert Beckmann, who is the CEO of
face value, without any up-charge, But with in-house BlueLink Diagnostic Solutions, Inc. He
diagnostics, body shops can charge for diagnostic also provides training in diagnosing
time and equipment, which can increase revenue. and repairing Mercedes-Benz vehicles at
various industry events and is well-versed
The challenge for collision facilities is clear: Each in Mercedes-Benz diagnostics methodology
must strive to be capable of providing customers and equipment for both regular and theft-
with a complete and safe repair by employing the related parts.
highest level of tools and expertise possible. And
they must strive to gain more direct control and • Steve Brotherton, who owns Continental
diagnostic expertise. Imports, an independent shop located
in Gainesville, Fla., that specializes in
"Today and going forward, body shops and servicing Mercedes-Benz vehicles and
technicians are in for a really rough ride if they several other brands. He owns OEM
don't embrace vehicle electronics and electrification factory diagnostic tools and purchases
as realities today, and then tool and train properly," service information subscriptions for each
the trainer cautions. "Many aftermarket independent automaker that he services. In addition, he
repair facilities are increasingly less productive requires his Mercedes-Benz team of four
today because they continue to farm out too many technicians to complete Mercedes-Benz
opportunities, rather than tool and train to manage training and to use the Star Diagnostics
change. Like a slippery slope, the refusal by some System (SDS) Compact 4 diagnostic
of these facilities to recognize, embrace, adapt, and scan tool (above), software, and other
prepare will ultimately seal their fate and pre-empt Mercedes-Benz-approved tools. Besides his
a sustainable, profitable future." mechanical-based business, Continental
Imports works with nearby collision
A FEW BODY SHOP EXAMPLES facilities that recognize when they need the
There are many examples of repairs in which expertise his shop can provide.
Mercedes-Benz factory tooling and software
capability, along with the expertise to use them, are "Mercedes-Benz has some of the most advanced
essential to providing a full, safe collision repair. We safety equipment in the world, which makes the
Configuring the deployment characteristics of new airbags installed during collision repair requires the use of
WSS equipment, an SDS scanner and subscription-based diagnostic software, (image-continentalimports)
August 2012 19

20. use of the company's diagnostic equipment an • Many ECUs are VIN-locked (vehicle
essential part of most collision-related repairs identification number) within the SRS
today," Beckmann says. "For example, many ECUs system. Aftermarket scan tools simply
associated with vehicle safety systems are coded cannot do all that the Mercedes-Benz scan
and configured to very specific applications. These tool can.
include components such as seat weight sensing
systems (WSS), electrically operated reversible • Mercedes-Benz diagnostic equipment
seat belt tensioners, airbag control units, and maintains log files and provides
others, all of which need programming after traceability into how things were
deployment or replacement." programmed and coded.
"Collision professionals must be aware that these • Accountability is provided by a login
and other Mercedes-Benz safety-related components system that identifies who did the
- especially if part of a vehicle's Supplemental programming of any ECU.
Restraint System (SRS) - need to be properly • The information provided by Mercedes-Benz
programmed and configured after deployment or resources that support factory diagnostic
replacement for them to operate correctly. Because tooling includes guidance that enables a
they are part of most collision-related repairs level of repair aftermarket tools may not be
today, the failure to do so may cause unsafe or able to provide.
unpredictable operation post-repair."
"For example, PDFs are available from STARTek
Beckmann cites a number of reasons why tooling Info that provide schematic diagrams and
and proper software programming is essential configuration instructions for the restraint and
for safe predictable operation post-repair. Among other safety systems," Beckmann tells us. "In
others, these include the following: particular, these resources
denote the data for items
that need coding. The use of
Mercedes-Benz scan tools
and software is essential
to taking advantage of this
data to properly configure
Supplemental Restraint Systems
(SRS) and other safety systems.
It's part of performing a
complete collision repair for
your customers."
"The WSS is used to
continuously monitor the
passenger seat for the size and
weight of the occupant and
then configure the deployment
characteristics of the airbag in
the event of an accident," notes
Brotherton. "The WSS involves
three weights and requires a
calibration process that can only
be done completely using the
The Romess electronic inclinometer is a Mercedes-Benz-approved tool SDS scan tool and subscription-
used to perform wheel alignments. (Image - Continental Imports) based diagnostic software."
20 Mercedes-Benz StarTuned

21. "When a wheel alignment needs to be performed "Mercedes-Benz also employs SCN coding when
as part of a collision repair, Mercedes-Benz servicing modules," Brotherton says. "The concept
requires the use of a certain approved tools and of SCN is for the tech to program a module and
procedures," Brotherton explains. "Any Mercedes- then hook to the Mercedes-Benz server located
Benz model, but especially those with Airmatic in Germany. The VIN, hardware and software
and Active Body Control (ABC) systems, requires numbers are verified and basically a calibration
the use of the approved Romess tool, which is an ID is performed. It also registers new software
electronic inclinometer." and hardware into the server for the car so the
company knows exactly the configuration of each. In
"The concept of the tool is to gauge and calibrate addition, there could be various recall-based issues
ride height," Brotherton continues. "Romess data is that require such knowledge, and Mercedes-Benz
used to establish proper alignment specs. In the case requires it of all modules that get programming.
of Airmatic or ABC, the suspension height must be The complete function by its very nature makes
calibrated before the alignment is performed. This is a Mercedes-Benz tool and SDS Flash subscription
done by first adjusting the height with the SDS scan necessary, if a collision facility truly wants to be
tool until it is the right Romess angle specification, able to provide complete repairs.
and then entering those numbers (representing each
corner of vehicle) to set the calibration. Clearly, it is neither easy nor cheap to tool-
up for diagnostic service
as part of a collision repair.
Diagnosis Assistance System Copyright 1999 Daimler AG
Improving vehicle serviceability
means that OEMs and the
Model series/model 209.365
designation aftermarket need to collaborate
Order number License plate meaningfully. Mercedes-
Benz does that, notably
Documentation for repair order WDBTJ65J14F0 through its involvement with
Control unit p r o g r a m m i n g w a s c o m p l e t e d successfully.
ETI, the National Automotive
The SCN c o d i n g sequence h a s been c o m p l e t e d successfully.
AR input fields mist be filed out
Service Task Force, and other
ftirs tog with function Itey F11 vanenu<tem'ftintc»f.of test step'.
organizations. That cooperation
A prrwoji of thetogw *h the repair order nurrfcer entered rrust afw ays be f tea along w * the repar documents for any polenta) check of w arranty and gccdw I clams by the
M=C
The ordertogis no longer avalable after exingth-s screen
helps tool and equipment
Repair c r e w number
Name of tester Steve Brotherton
makers build the stuff that
D&aJWIHffrlMr TDM technicians want to use.
UMrtttnOtr C "scr
Date 201O.05-20O9.2C (09:20 am}
DAS data vers^n 03'-2O10(201O-02-11) + AddOn 1333.1391.13B7.1403.1406.*)40Q.1408.13&7.1412.14-
But collision facilities must
15.1417.14te.1428.l426.H35.1440.1443.1404.1445.1455.t4c3
STARDWGNOStS SDConpacHsor
be cognizant that when factory-
System number STARK 3 level diagnostics are needed,
Vehfcte-dentno.Vl*
Version Control mocute prograirmng:
woeTae5Ji4Fce
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nothing beats OEM diagnostic
fctter etectrones 2 8 tooling. At the end of the day, it
Rfcrf omned. Centre) rroSuie prcgrammng
Ccnrol unt iSer.f cation:
is the shop owners, technicians,
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fNVvefston 3502 SWversion 3 Q M Dagnoss.version 1?11 Suppier Bosch Datecf rrarufacta-e 10/03
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and service advisors who
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Ccntroi u n i progrannrQ n as conpteed succcs^uly. customers identify as the
Ongrval centre^ unit software verscn: 1121535476
^ f o r m e d control urtt programrinQ: CO544&5502_001
Current controi unit softw are version-1121538579
human interface when it comes
SCNcodog-
Tne SCNcodrfl sequence has b e e i conptaed s u c c e s s f u l .
Rart number queried 112153S576
to collision repair. So, ask
SCN 112153857V-15-0028
yourself one acid-test question:
Filename: FAProgramm eDastreespkwftashenzentrallibetriebnahme s
"Is my choice of diagnostic
Cell coordinate: 35.41 tooling in collision repair
Mercedes-Benz requires SCN coding whenever ECUs are serviced. helping me or limiting me in
The coding provides the automaker, technicians, and vehicle owners growing my business?"
with a secure means to identify, verify, and update the calibration and
programming when servicing electronic modules, (image - continental imports)
August 2012 21

22. rwF^rawnw ©fit-mm
Mercedes-Benz Mobil 1
Product Name Part Number Quantity Product Description Recommended Consumer Applications
Mercedes-Benz SPEC.
BtQ 1 09 0144 Bulk - No Equipment
Mobil 1 Fully synthetic formulas designed
BQ 1 09 0162 6/1 Quart Cases Low SPAsh. Available at most MB dealers
Formula M 5W-40 specifically for gasoline passenger cars
BQ 1 09 0151 55 Gallon Drum
BQ 1 09 0010 Bulk- No Equipment
Fully synthetic formulation designed Porsche A40. Many European vehicles.
Mobil 1 OW-40 BQ 1 09 0015 6/1 Quart Cases to meet the requirements of many HT/TS applications.
European vehicles
BQ 1 09 0016 55 Gallon Drum
Mobil 1 ESP
BQ 1 09 0135 Bulk-No Equipment Advanced full synthetic formulas
Formula M 5W-40
designed specifically for diesel
Low SPAsh. Available at most MB dealers
BQ 1 09 0142 6/1 Quart Cases passenger cars that have particulate
filters
BQ 1 09 0143 55 Gallon Drum
Mobil 1 5W-50 BQ 109 0133 16 Gallon Keg Higher viscosity, advanced full synthetic
"~ ________ formula designed for performance Porsche A40. HT/HS applications.
BQ 109 0134 6/1 Quart Cases vehicles
Extra high performance automatic
Recommended for use in Mercedes-Benz
Mobil ATF 134 BQ 1 09 0166 55 Gallon Drum transmission fluid formulated with
automatic gearboxes
selected HVI base oils
Advanced full synthetic formulas
Mobil 1 ESP Low SPAsh. Available at many Chrysler
BQ 1 09 0165 12x1 Liter Cases designed specifically for passenger car
Formula MB 5W-30 dealers
diesels that have particulate filters
AdBlue® 1/2 Gal. A 000 583 0107 1 / 2 Gallon Bottle Non-toxic solution that transforms
Recommended for use in Mercedes-
harmful Nitrogen Oxide (NOx) emissions
from Benz, Volkswagen + BMW AdBlue® (DEF)
Diesel Exhaust Fluid BQ 1 47 0002 55 Gallon Drum diesel-powered vehicles into applications
so ^ai harmless water vapor and nitrogen
BQ 1 09 0017 6/1 Quart Cases Advanced full synthetic formulation
designed to meet the requirements Vehicles that require 5W-30. Corvette
Mobil 1 5W-30 of m a n v
BQ 1 09 0018 55 Gallon Drum domestic, including GM, and approved.
imported vehicles
BQ 1 09 0019 6/1 Quart Cases
Advanced full synthetic formula
Mobil 1 10W-30 BQ 1 09 0020 16 Gallon Keg Vehicles that require 5W-30 or 10W-30
designed for domestics and imports
BQ 1 09 0021 55 Gallon Drum
BQ 1 09 0083 6/1 Quart Cases Advanced full synthetic formulation
Mobil 1 5W-20 ~~ designed to meet the requirements of Vehicles that require 5W-20
manv newer
BQ 1 09 0084 55 Gallon Drum vehicles including Hondas,
Fords, Chryslers, and newer Toyotas
BQ 1 09 0169 6/1 Quart Cases Advanced full synthetic formulation Most vehicles that specify OW-20 (newer
Mobil 1 0W-20 AFE • '• designed for enhanced fuel economy Toyotas and Hondas), 5W-20 and certain
BQ 1 09 0168 55 Gallon Drum and cold weather performance hybrids
Advanced full synthetic formulation
Most vehicles that specify 5W-30 or
Mobil 1 OW-30 AFE BQ 1 09 0174 6/1 Quart Cases designed for enhanced fuel economy
10W-30
and cold weather performance
BQ 1 09 0164 6/1 Quart Cases Multi-vehicle, fully synthetic fluid
Vehicles that require Dexron III, Ford
Mobil 1 Synthetic ATF designed to meet the demanding
Mercon and Mercon V performance
BQ 1 09 0163 55 Gallon Drum requirements of modern passenger
levels
vehicles
Boosted, higher viscosity, advanced
Mobil 1 15W-50 BQ 1 09 0023 55 Gallon Drum HT/HS applications. Racing and Flat
full synthetic formula designed for
tappet applications
performance vehicles
Mobil 1 Gear Oil SUITABLE for use in modern high
Exceeds the most severe service
(Mobil 1 Gear Lube BQ 1 09 0085 performance automobiles like SUV's,
12/1 Quart Cases requirements in both conventional and
75W-90) Vans and Light duty trucks requiring API
limited slip applications
GL-5 level performance
BQ 1 09 002464 Bulk - No Equipment Formulated from quality base stocks
12/1 Quart Cases combined with modern performance Recommended for gasoline fueled
Mobil Special 5W-30 BQ 1 09 0171 additives to give the engine the expected automobiles and light duty trucks
protection and performance under a requiring an API SN/SM/SL/SJ
BQ 1 09 003064 55 Gallon Drum wide variety of operating conditions