MESSAGE MERCEDES-BENZ C230 KOMPRESSOR COUPE 2002 CL203 Owner's Guide

232 Tele Aid
Te ch n i c a l
data Instruments
and controlsOperationDrivingInstrument
cluster displayPractical hints Car care Index
Roadside Assistance button 
Located below the center armrest cover is the Roadside
Assistance button. Pressing and holding the
button (for longer than 2 seconds) will initiate a call to a
Mercedes-Benz Roadside Assistance dispatcher. The
button will flash while the call is in progress. The
message “ROADSIDE ASSISTANCE – CONNECTING
CALL” will appear in the multifunction display. When
the connection is established, the message “ROADSIDE
ASSISTANCE – CALL CONNECTED” appears in the
multifunction display. The Tele Aid system will transmit
data generating the vehicle identification number,
model, color and location (subject to availability of
cellular and GPS signals).A voice connection between the Roadside Assistance
dispatcher and the occupants of the vehicle will be
established. When a voice connection is established the
audio system mutes and the message “TELE AID –
ROADSIDE ASSISTANCE CALL ACTIVE” appears in the
multifunction display. The nature of the need for
assistance can then be described. The Mercedes-Benz
Roadside assistance dispatcher will either dispatch a
qualified Mercedes-Benz technician or arrange to tow
your vehicle to the nearest Mercedes-Benz Center.
For services such as labor and/or towing charges may
apply. Refer to the Roadside Assistance manual for more
information.
These programs are only available in the USA:
•Sign and Drive services: Services such as jump start,
a few gallons of fuel or the replacement of a flat tire
with the vehicle spare tire are obtainable,
•Remote Vehicle Diagnostics: This function permits
the Mercedes-Benz Roadside Assistance dispatcher
to download malfunction codes and actual vehicle
data.
Wa r n i n g !
If you feel at any way in jeopardy when in the
vehicle (e.g. smoke or fire in the vehicle, vehicle in
a dangerous road location), please do not wait for
voice contact after you have pressed the emergency
button. Carefully leave the vehicle and move to a
safe location. The Response Center will
automatically contact local emergency officials
with the vehicle’s approximate location if they
receive an automatic “SOS” signal and cannot make
voice contact with the vehicle occupants.

233 Tele Aid
Te ch n i c a l
data Instruments
and controlsOperationDrivingInstrument
cluster displayPractical hints Car care Index Notes:
The indicator lamp in the Roadside Assistance
button remains illuminated in red for approx.
10 seconds during the system self-check after turning
electronic key in starter switch to position 2 (together
with the “SOS” button and the Information
button¡).
See system self-check on page 228 when the indicator
lamp does not light up in red or stays on longer than
approximately 10 seconds.
If the indicator lamp in the Roadside Assistance
button is illuminated continuously and there was
no voice connection to the Response Center established,
then the Tele Aid system could not initiate an Roadside
Assistance call (e.g. the relevant cellular phone network
is not available). The message “ROADSIDE
ASSISTANCE – CALL FAILED” appears in the
multifunction display.
Roadside Assistance calls can be terminated using the
ìbutton on the multifunction steering wheel.Information button ¡
Located below the center armrest cover is the
Information button¡. Pressing and holding the
button (for longer than 2 seconds) will initiate a call to
the Customer Assistance Center. The button will flash
while the call is in progress. The message “INFO –
CONNECTING CALL” will appear in the multifunction
display. When the connection is established, the
message “INFO – CALL CONNECTED” appears in the
multifunction display. The Tele Aid system will transmit
data generating the vehicle identification number,
model, color and location (subject to availability of
cellular and GPS signals).
A voice connection between the Customer Assistance
Center representative and the occupants of the vehicle
will be established. When a voice connection is
established the audio system mutes and the message
“TELE AID – INFO CALL ACTIVE” appears in the
multifunction display. Information regarding the
operation of your vehicle, the nearest Mercedes-Benz
Center or Mercedes-Benz USA products and services is
ava i l ab le to yo u .
For more details concerning Tele Aid, please visit
www.mbusa.com and use your ID and password, sent to
you separately, to learn more (USA only).

234 Tele Aid
Te ch n i c a l
data Instruments
and controlsOperationDrivingInstrument
cluster displayPractical hints Car care Index
Notes:
The indicator lamp in the Information button¡
remains illuminated in red for approx. 10 seconds
during the system self-check after turning electronic
key in starter switch to position 2 (together with the
“SOS” button and the Roadside Assistance button).
See system self-check on page 228 when the indicator
lamp does not light up in red or stays on longer than
approximately 10 seconds.
If the indicator lamp in the Information button¡ is
illuminated continuously and there was no voice
connection to the Response Center established, then the
Tele Aid system could not initiate an Information call
(e.g. the relevant cellular phone network is not
available). The message “INFO – CALL FAILED” appears
in the multifunction display.
Information calls can be terminated using the
ìbutton on the multifunction steering wheel.Important!
If the indicator lamps do not start flashing after
pressing one of the buttons or remain illuminated (in
red) at any time, the Tele Aid system has detected a fault
or the service is not currently active, and may not
initiate a call.
Visit your Mercedes-Benz Center and have the system
checked or contact the Response Center at 1-800-756-
9018 (in the USA) or 1-888-923-8367 (in Canada) as
soon as possible.
Upgrade Signals
Tele Aid system processes calls using the following
priority.
•Automatic emergency – First priority
•Manual emergency – Second priority
•Roadside assistance – Third priority
•Information – Fourth priority
Should a higher priority call be initiated while you are
connected, an upgrade (alternating) tone will be heard,
and the appropriate indicator lamp will flash. If certain
information such as vehicle identification number or
Customer information is not available, the operator may

236 Tele Aid
Te ch n i c a l
data Instruments
and controlsOperationDrivingInstrument
cluster displayPractical hints Car care Index
Remote door unlock
In the case you have your vehicle locked unintentionally
(e.g. key inside vehicle), and no other key is available,
contact the Mercedes-Benz Response Center at
1-800-756-9018 (in the USA) or 1-888-923-8367 (in
Canada). You will be asked to provide your password
which you provided when you completed the subscriber
agreement.
Then return to your vehicle and pull recessed handle in
trunk lid for minimum of 20 seconds until the “SOS”
button is flashing. The message “EMERGENCY CALL –
CALL CONNECTED” appears in the multifunction
display.
As an alternative, you may unlock the vehicle via
Internet using the ID and password sent to you shortly
after the completion of your Acquaintance Call.
The Response Center will then unlock your vehicle with
the remote door unlocking feature.Notes:
The remote door unlock feature is available if the
relevant cellular phone network is available.
The SOS button will flash and the message
“EMERGENCY CALL – CALL CONNECTED” will appear
in the multifunction display to indicate receipt of the
door unlock command.
Once the vehicle is unlocked, a Response Center
specialist will attempt to establish voice contact with the
vehicle occupants.
If the recessed handle in trunk lid was pulled for more
than 20 seconds before door unlock authorization was
received by the Response Center, you must wait
15 minutes before pulling recessed handle again.

237 Tele Aid
Te ch n i c a l
data Instruments
and controlsOperationDrivingInstrument
cluster displayPractical hints Car care Index Stolen vehicle tracking services
In the event your vehicle was stolen, report the incident
to the police who will issue a numbered incident report.
Pass this number on to the Mercedes-Benz Response
Center.
The Response Center will then attempt to covertly
contact the vehicle’s Tele Aid system. Once the vehicle
is located, the Response Center will contact the local
Law Enforcement and you. The vehicle’s location will
only be provided to Law Enforcement.
Info Services (optional-except Canada)
(only vehicles with COMAND)
Info Services categories include news, sports, stocks,
weather and calendar reminders. Choices can be
selected via www.mbusa.com or by calling 1-800-FOR-
MERcedes.
To request Info Services press the SVC button on the
COMAND system, then select “SEND NEW REQUEST
FOR INFO SERVICE”. “NEW INFO SERVICE REQUEST
TRANSMITTED” will appear in the COMAND display
and call status messages will appear in the
multifunction display.Once information is available, the message “NEW INFO
RECEIVED - READ LATER WHEN STOPPED?” will
appear. Select “Yes”. With the vehicle stopped in a safe
location press SVC, then select “View Info Service of
mm.dd.yyyy hh.mm”. Messages will be retained for
30 minutes once the ignition is switched off.
Important!
Tele Aid utilizes the cellular network for
communication and the GPS (Global Positioning
System) satellites for vehicle location. If either of these
signals are unavailable, the Tele Aid system may not
function and if this occurs, assistance must be
summoned by other means.
Wa r n i n g !
If the indicator lamp in the “SOS” button does not
illuminate during or remains illuminated after the
system self-check or if the message “TELE AID –
VISIT WORKSHOP” appears in the multifunction
display, have the system checked at the nearest
Mercedes-Benz Center as soon as possible.

256 Parking brake
Te ch n i c a l
data Instruments
and controlsOperationDrivingInstrument
cluster displayPractical hints Car care Index
Parking brakeTo engage, firmly depress parking brake pedal. When
the electronic key is in starter switch position 2, the
brake warning lamp in the instrument cluster should
come on brightly.
To release the parking brake, pull handle on instrument
panel. The brake warning lamp in the instrument
cluster should go out.
A warning sounds and the parking brake warning
message appears in the multifunction display
(see page 295), if you start to drive without having
released the parking brake.
Also see brake warning lamp on page 284.
Wa r n i n g !
When leaving the vehicle always remove the
electronic key from the starter switch, and lock the
vehicle. Do not leave children unattended in the
vehicle, or with access to an unlocked vehicle.
Children could release the parking brake, which
could result in an accident or serious injury.

271 Driving systems
Te ch n i c a l
data Instruments
and controlsOperationDrivingInstrument
cluster displayPractical hints Car care Index Brake assist system (BAS)
The BAS is designed to maximize the vehicle’s braking
capability during emergency braking maneuvers by
having maximum power boost applied to the brakes
more quickly in emergency braking conditions than
might otherwise be afforded solely by the driver’s
braking style. This can help reduce braking distances
over what ordinary driving and braking style might do.
The BAS complements the antilock brake system (ABS).Applying the brakes very quickly results in maximum
BAS assistance.
To receive the benefit of the system you must apply
continuous full braking power during the stopping
sequence. Do not reduce brake pedal pressure.
Once the brake pedal is released, the BAS is deactivated.
If the BAS warning message is displayed, a malfunction
has been detected in the system. The brake system
functions in the usual manner, but without BAS.
With the ABS malfunctioning, the BAS is also switched
off.
If a BAS warning message is displayed, have the BAS
checked at your authorized Mercedes-Benz Center as
soon as possible.
Wa r n i n g !
BAS cannot prevent the natural laws of physics
from acting on the vehicle, nor can it increase
braking efficiency beyond that afforded by the
condition of the vehicle brakes and tires or the
traction afforded. The BAS cannot prevent
accidents, including those resulting from excessive
speed in turns, following another vehicle too
closely, or aquaplaning. Only a safe, attentive, and
skillful driver can prevent accidents. The
capabilities of a BAS equipped vehicle must never
be exploited in a reckless or dangerous manner
which could jeopardize the user’s safety or the
safety of others.

275 Driving systems
Te ch n i c a l
data Instruments
and controlsOperationDrivingInstrument
cluster displayPractical hints Car care Index Notes:
The yellow ESP warning lampv in the speedometer
dial comes on with the electronic key in starter switch
position 2. It should go out with the engine running.
If the ESP warning message is displayed, a malfunction
has been detected in the system. Only partial engine
output will be available.
Have the ESP checked at your authorized
Mercedes-Benz Center as soon as possible.
For ESP warning message, see page 288.
With the ABS malfunctioning, the ESP is also switched
off.
Driving the vehicle with varied size tires will cause the
wheels to rotate at different speeds, therefore the ESP
may activate (yellow ESP warning lamp in speedometer
dial comes on). For this reason, all wheels, including the
spare wheel, must have the same tire size. When testing the parking brake on a brake test
dynamometer, the engine must be shut off. Otherwise,
the ESP will immediately be engaged and will apply the
rear wheel brakes.
In winter operation, the maximum effectiveness of the
ESP is only achieved with Mercedes-Benz recommended
M+S rated radial-ply tires and / or snow chains.
Synchronizing ESP
If the power supply was interrupted (battery
disconnected or empty), the ESP warning message may
be displayed with the engine running.
Turn steering wheel completely to the left and then to
the right. The ESP warning message should go out.

281 Contents - Instrument cluster display
Te ch n i c a l
data Instruments
and controlsOperation DrivingInstrument
cluster displayPractical hints Car care Index
Instrument cluster displayMalfunction and indicator
lamps in the instrument
cluster ......................................... 282
On-board diagnostic system ......... 283
Check engine malfunction
indicator lamp............................. 283
Brake warning lamp .................. 284
Supplemental restraint
system (SRS) indicator lamp .... 285
Fuel reserve warning................. 286
ABS malfunction indicator
lamp.............................................. 287
Electronic stability program
(ESP) — warning lamp ............... 288
Seat belt nonusage warning
lamp ............................................288Malfunction and indicator
lamp in the center console...... 289
AIRBAG OFF indicator lamp .... 289
Malfunction and warning
messages in the
multifunction display .............. 290
DISPLAY DEFECTIVE................ 291
BATTERY / ALTERNATOR ....... 292
ANTILOCK BRAKE SYSTEM .... 293
BRAKE ASSIST........................... 293
BRAKE PAD WEAR.................... 294
BRAKE FLUID ............................ 294
PARKING BRAKE ....................... 295
SEAT BELT SYSTEM .................. 295
ELEC. STABIL. PROG.
(Electronic stability program).. 296
COOLANT (coolant level).......... 297COOLANT
(coolant temperature) ................ 298
ENGINE OIL LEVEL ................... 299
LIGHTING SYSTEM .................... 300
LIGHT SENSOR........................... 302
DOOR............................................ 302
TRUNK OPEN ............................. 303
HOOD ........................................... 303
TELEPHONE – FUNCTION ....... 304
TELE AID ..................................... 304
WASHER FLUID.......................... 305
RESTRAINT SYSTEM ................. 306
KEY............................................... 306
FUEL RESERVE .......................... 307
UNDERVOLTAGE ........................ 307
STEERING WHEEL ADJUST. ..... 308

284 Malfunction and indicator lamps
Te ch n i c a l
data Instruments
and controlsOperation DrivingInstrument
cluster displayPractical hints Car care Index
Brake warning lamp
Except Canada
Canada only
When the brake warning lamp and message appear
while the engine is running, this means:
•there is insufficient brake fluid in the reservoir
(engine running and parking brake released), or
•the parking brake is set (engine running).Note:
If you find that the minimum mark on the brake fluid
reservoir is reached, have the brake system checked for
brake pad thickness and leaks.
Wa r n i n g !
Driving with the brake warning lamp illuminated
can result in an accident. Have your brake system
checked immediately if the brake warning lamp
stays on. Don’t add brake fluid before checking the
brake system. Overfilling the brake fluid reservoir
can result in spilling brake fluid on hot engine
parts and the brake fluid catching fire. You can be
seriously burned.