
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. 

286 Malfunction and indicator lamps
Te ch n i c a l
data Instruments 
and controlsOperation DrivingInstrument 
cluster displayPractical hints Car care Index
Fuel reserve warning
1Fuel reserve indicatorWhen the warning lamp (1) comes on after starting the 
engine, or if it comes on while driving, it indicates that 
the fuel level is down to the reserve quantity of 
approximately 2.1 US gal (8 liters). In addition to the 
warning lamp, the message “RESERVE FUEL” –“VISIT 
FUEL STATION” appears in the multifunction display.
See page 278 for notes on refueling the vehicle.
After refueling the vehicle, the message 
“1 MALFUNCTION” appears in the multifunction 
display when turning the electronic key in starter 
switch to position 2. This malfunction message has to be 
cleared, see page 119 for notes on the malfunction /
warning message memory.
P54.30-4541-26 

287 Malfunction and indicator lamps
Te ch n i c a l
data Instruments 
and controlsOperation DrivingInstrument 
cluster displayPractical hints Car care Index ABS malfunction indicator lamp
The ABS malfunction indicator lamp in the 
instrument cluster comes on with the 
electronic key in starter switch position 2 
and should go out with the engine running.
When the ABS malfunction indicator lamp symbol and 
warning in the instrument cluster remains illuminated 
while the engine is running, it indicates that the ABS 
has detected a malfunction and has switched off. In this 
case, the brake system functions in the usual manner, 
but without antilock assistance.
A malfunctioning ABS control unit can possibly affect 
the operation of other systems (e.g. Navigation, 
Automatic transmission). Be guided accordingly with 
respect to the use of those systems and have the system 
checked at your authorized Mercedes-Benz Center as 
soon as possible.With the ABS malfunctioning, the BAS and ESP are also 
switched off. The malfunction indicator lamps and 
malfunction messages in the multifunction display 
come on with the engine running.
If the charging voltage falls below 10 volts, the 
malfunction indicator lamp comes on and the ABS is 
switched off. When the voltage is above this value again, 
the malfunction indicator lamp should go out and the 
ABS is operational.
Have the system checked at your authorized 
Mercedes-Benz Center as soon as possible.
See page 272 for notes on antilock brake system (ABS).
ABS