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237 Malfunction and indicator lamps
Te ch n ica l
data Instruments
and controlsOperation DrivingInstrument
cluster displayPractical hints Car care Index Electronic stability program (ESP) — warning lamp
The yellow ESP warning lamp in the
speedometer dial comes on with the
electronic key in steering lock position 2.
It should go out with engine running.
See page 219 and 220 if the warning lamp lights up or
flashes when the vehicle is moving.
BAS / ESP malfunction indicator lamp
The malfunction indicator lamp for the ESP
is combined with that of the BAS.
The yellow BAS / ESP malfunction indicator
lamp in the instrument cluster comes on with the
electronic key in steering lock position 2. It should go
out with the engine running.
If the BAS / ESP malfunction indicator lamp remains
illuminated with the engine running, see page 215 for
notes on brake assist system (BAS) and page 220 for
notes on electronic stability program (ESP).ABS malfunction indicator lamp
The ABS malfunction indicator lamp in the
instrument cluster comes on with the
electronic key in steering lock 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.
With the ABS malfunctioning, the BAS and ESP are also
switched off. Both malfunction indicator lamps 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 217 for notes on antilock brake system (ABS).
ABS
Page 241 of 341
238 Malfunction and indicator lamps
Te ch n ica l
data Instruments
and controlsOperation DrivingInstrument
cluster displayPractical hints Car care Index
Seat belt warning lamp
With the electronic key in steering lock
position 2, t he seat belt wa rning lamp com es
on and a warning sounds for approximately
6 seconds if the driver’s seat belt is not fastened.Malfunction and indicator lamp in the center
console
AIRBAG OFF indicator lamp
The 7 indicator lamp will light up for approximately
6 seconds when you turn the electronic key in steering
lock to position 1 or 2.
The 7 indicator lamp stays lit as long as a
BabySmart
TM compatible child seat is properly installed
on the front passenger seat. It indicates that the front
passenger airbag is switched off.
See page 67 for BabySmart
TM deactivation system.
BabySmart
TM is a trademark of Siemens Automotive Corp.
Page 242 of 341

239 Malfunction and warning messages
Te ch n ica l
data Instruments
and controlsOperation DrivingInstrument
cluster displayPractical hints Car care Index Malfunction and warning messages in the
multifunction display
Malfunction and warning messages for the following
systems will be displayed immediately in the
multifunction display.
These messages can be cleared from the instrument
cluster by:
•using the J button on the instrument cluster, or
•pressing buttonj, k, è or ÿ on the
multifunction steering wheel.
They are then stored in the malfunction message
memory. See page 108. Notes:
Certain malfunction and warning messages are
accompanied by an audible signal.
Malfunction and warning messages in red are always
accompanied by an audible signal.
Temporary messages such as “SWITCH OFF LIGHTS”
will not be stored in the malfunction message memory.
Wa r n i n g !
All messages contain important information which
should be taken note of and, where malfunction
indicated, addressed as soon as possible at an
authorized Mercedes-Benz Center.Failure to repair condition noted may cause
damage not covered by the Mercedes-Benz Limited
Warranty, or result in property damage or personal
injury.
Page 250 of 341
247 Malfunction and warning messages
Te ch n ica l
data Instruments
and controlsOperation DrivingInstrument
cluster displayPractical hints Car care Index LIGHTING SYSTEMWhen the message appears after starting the engine, or
if it come on while driving, this indicates a failure in the
parking lamp, taillamp, stop lamp, or low beam
headlamp. See page 285 for instructions on replacing
bulbs.
If an exterior lamp fails, the message will appear only
when that lamp is switched on.
If a brake lamp fails, the message will appear when
applying the brake and stays on until the engine is
turned off.
Note:
If additional lighting is installed (e.g. auxiliary
headlamps etc.) be certain to connect into the fuse
before the failure indicator monitoring unit order to
avoid damaging the system.
Line 1 Line 2
LAMP DEFECTIVE CHECK LAMPS!
DISPLAY DEFECTIVE VISIT WORKSHOP!
Page 251 of 341
248 Malfunction and warning messages
Te ch n ica l
data Instruments
and controlsOperation DrivingInstrument
cluster displayPractical hints Car care Index
LIGHT SENSOR
With the electronic key removed and the driver’s door
open, a warning sounds and the message “SWITCH OFF
LIGHTS!” appears in the multifunction indicator if the
vehicle’s exterior lamps (except standing lamps) are not
switched off.REMOVE KEY
This message plus an audible alarm indicate that the
electronic key is in steering lock position 0 or 1, and the
driver’s door is open.
P54.30-3573-21
Page 283 of 341
280 Jump starting
Te ch n ica l
data Instruments
and controlsOperation DrivingInstrument
cluster displayPractical hintsCar care Index
Proceed as follows:
1. Position the vehicle with the charged battery so that
the jumper cables will reach, but never let the
vehicles touch. Make sure the jumper cables do not
have loose or missing insulation.
2. On both vehicles:
•Turn off engine and all lights and accessories,
except hazard warning flashers or work lights.
•Apply parking brake and shift selector lever to
position “P”.
Important!
3. Lift cover (1) and clamp one end of the first jumper
cable to the positive (+) under hood terminal (2) of
the discharged battery and the other end to the
positive (+) terminal of the charged battery. Make
sure the cable clamps do not touch any other metal
parts.
Page 333 of 341

330 Index
Te ch n ica l
data Instruments
and controlsOperation DrivingInstrument
cluster displayPractical hints Car careIndex
Parking lamps ..................................................288, 289
Replacing bulbs .........................................................285
Side marker lamp, front ...........................................290
Standing lamps ................................................. 288, 289
Taillamp assemblies .................................................289
Turn signal lamps ............................................ 288, 289
FFirst aid kit .....................................................................254
Flexible service system (FSS) .......................................114
Four wheel electronic traction system
(4MATIC) with Electronic Stability
Program (ESP) ........................................................... 219
Fuel ..................................................................................229
Gasoline Additives ....................................................322
Premium unleaded gasoline ..................229, 319, 321
Fuel cap placement warning ........................................236
Fuel Requirements ........................................................ 321
Fuel reserve warning ....................................................236
Fuels, coolants, lubricants etc. - capacities ............... 318
Fuses, electrical .............................................................255
GGarage door opener ....................................................... 171
Gasoline
Additives .................................................................... 322
Fuel Requirements ...................................................321
Premium unleaded .................................................. 229
General notes on the
central locking system ............................................... 28
Glove box ......................................................................... 163HHazard warning flasher switch ................................... 125
Head restraints
Front seat .....................................................................52
Rear seat ....................................................................... 53
Synchronizing ............................................................. 48
Headlamp cleaning system ........................................... 121
Headlights ....................................................................... 122
Heated seats ......................................................................55
Hood ................................................................................ 257
Page 334 of 341

331 Index
Te ch n ica l
data Instruments
and controlsOperation DrivingInstrument
cluster displayPractical hints Car careIndex
IIdentification labels .......................................................309
Illuminated vanity mirrors ........................................... 161
Indicator lamps in the
instrument cluster ............................................. 88, 234
Individual settings ..........................................................110
Infant and child restraint systems ................................ 78
Information call
See Tele Aid ............................................................... 178
Instrument cluster ........................................................... 86
Activating ..................................................................... 89
Illumination ................................................................. 89
Indicator lamps ........................................................... 88
Instruments and controls ............................................... 18
Interior
General notes ............................................................. 162
Interior lighting ............................................................. 159JJump starting ..................................................................279
KKeys, vehicle .....................................................................24LLamps, exterior
Fog lamps ...........................................................119, 289
Headlamps ........................................ 119, 247, 286, 302
Parking lamps ...........................................119, 288, 289
Replacing bulbs ........................................................ 285
Side marker lamp, front ...................................119, 290
Standing lamps .........................................119, 288, 289
Taillamps .......................................... 119, 247, 289, 302
Layout of poly-V-belt drive ............................................ 311
LIGHT SENSOR -
malfunction and warning messages ..................... 248
Lighter ............................................................................. 168
LIGHTING SYSTEM -
malfunction and warning messages ..................... 247
Limp home mode ............................................................201
Locking and unlocking .................................................... 31