Page 268 of 384
268 Practical hintsWhat to do if …?Problem
Possible cause
Suggested solution
?
The yellow “CHECK ENGINE”
malfunction indicator lamp
comes on while driving.
There is a malfunction in:
The fuel management system
The ignition system
The emission control system
Systems which affect emissions
Such malfunctions may result in excessive
emissions values and may switch the engine
to its Limp-Home Mode (emergency opera-
tion).
Have the vehicle checked as soon as
possible by an authorized
Mercedes-Benz Center.
An on-board diagnostic connector is
used by the service station to link the
vehicle to the shop diagnostics sys-
tem. It allows the accurate identifica-
tion of system malfunctions through
the readout of diagnostic trouble
codes. It is located in the front left
area of the footwell next to the park-
ing brake pedal.
Your gas tank is empty.
After refuelling start the engine three
or four times in succession.
The Limp-Home Mode is canceled. You
do not need to have your vehicle
checked.
The yellow fuel tank reserve
warning lamp lights up while
driving.
The fuel level has dropped below the reserve
mark.
Refuel at the next gas station
(page 235).
The fuel cap not closed tight.
Check the fuel cap (
page 235).
Page 272 of 384
272 Practical hintsWhat to do if …?ABC
VISIT WORKSHOP!
The capability of the ABC system is restrict-
ed.
Do not exceed a speed of 50 mph
(80 km/h).
Visit a service center as soon as pos-
sible.
ABS
MALFUNCTION!
VISIT WORKSHOP!
The ABS has detected a malfunction and
has switched off. The ESP and the BAS are
also deactivated.
The brake system is still functioning nor-
mally but without the ABS available.
Continue driving with added caution.
Wheels may lock during hard brak-
ing, reducing steering capability.
Have the system checked at an au-
thorized Mercedes-Benz Center as
soon as possible.
Failure to follow these instructions in-
creases the risk of an accident.
DISPLAY MALFUNCTION
VISIT WORKSHOP!
The ABS or the ABS display is malfunction-
ing.
Continue driving with added caution.
Wheels may lock during hard brak-
ing, reducing steering capability.
Have the system checked at an au-
thorized Mercedes-Benz Center as
soon as possible.
Failure to follow these instructions in-
creases the risk of an accident.
Display
Possible cause
Possible solution
Page 274 of 384
274 Practical hintsWhat to do if …?Display
Possible cause
Possible solution
#
BATTERY/ALTERNATOR
VISIT WORKSHOP!
The battery was charged with a battery
charger or jump started.
Have the battery checked at a ser-
vice station.
The battery is no longer charging.
Possible causes:
Alternator malfunctioning
Broken poly-V-belt
Do not forget that the brake system re-
quires electrical energy and may be operat-
ing with restricted capability. Considerably
greater brake pedal force is required and
the stopping distance is longer.
Stop immediately and check the
poly-V-belt.
If it is broken:
Do not continue to drive. Otherwise
the engine will overheat due to an in-
operative water pump which may re-
sult in damage to the engine. Notify
an authorized Mercedes-Benz
Center.
If it is intact:
Drive immediately to the nearest au-
thorized Mercedes-Benz Center. Ad-
just driving to be consistent with
reduced braking responsiveness.
Page 275 of 384
275 Practical hints
What to do if …?
Display
Possible cause
Possible solution
2
BRAKE WEAR
VISIT WORKSHOP!
The brake pads have reached their wear
limit.
Have the brake pads replaced as
soon as possible.
Except Canada:;Canada only:3
BRAKE FLUID
VISIT WORKSHOP!
There is insufficient brake fluid in the reser-
voir.
Risk of accident! Stop the vehicle
and notify an authorized
Mercedes-Benz Center. Do not add
brake fluid! This will not solve the
problem.
iBrake pad thickness must be visually
checked by a qualified technician at the
intervals specified in the Service Book-
let.
Warning!
G
Driving with this message displayed can re-
sult in an accident. Have your brake system
checked immediately. Don’t add brake fluid
before checking the brake system. Overfill-
ing the brake fluid reservoir can result in
spilling brake fluid on hot engine parts and
the brake fluid catching fire. You can be se-
riously burned.
!If you find that the brake fluid in the
brake fluid reservoir has fallen to the
minimum mark or below, have the
brake system checked for brake pad
thickness and leaks.
Page 285 of 384
285 Practical hints
What to do if …?
Display
Possible cause
Possible solution
.
LIGHT SENSOR
VISIT WORKSHOP!
The lamp sensor is malfunctioning. The
headlamps switch on automatically.
In the control system, set lamp oper-
ation to manual (
page 136).
Switch on headlamps using the exte-
rior lamp switch.
BRAKE LIGHT
VISIT WORKSHOP!
Brake lamp illumination is delayed or lamp
is permanently on.
Visit an authorized Mercedes-Benz
Center as soon as possible.
DISPLAY MALFUNCTION
VISIT WORKSHOP!
The display for the lamps or the system is
malfunctioning.
Visit an authorized Mercedes-Benz
Center as soon as possible.
TURN OFF LIGHTS!
Lamps have been turned on although the
key in the starter switch is in position 0.
Turn off the lights.
TURN SIG. MIRROR, L
CHECK LIGHT!
The left turn signal in the side mirror is mal-
functioning. This message will only appear
if all light emitting diodes have stopped
working.
Visit an authorized Mercedes-Benz
Center as soon as possible.
TURN SIG. MIRROR, R
CHECK LIGHT!
The right turn signal in the side mirror is
malfunctioning. This message will only ap-
pear if all light emitting diodes have
stopped working.
Visit an authorized Mercedes-Benz
Center as soon as possible.
TURN SIG., LF
CHECK LIGHT!
BACK-UP LIGHT ON!
The left front turn signal lamp is malfunc-
tioning. A back-up bulb is being used.
Replace the bulb as soon as possible.
Page 287 of 384
287 Practical hints
What to do if …?
.
STANDING LIGHT, R
CHECK LIGHT!
BACK-UP LIGHT ON!
The right standing signal lamp is malfunc-
tioning. A back-up bulb is being used.
Replace the bulb as soon as possible.
FRONT FOGLIGHT, L
CHECK LIGHT!
The left front fog lamp is malfunctioning.
Visit an authorized Mercedes-Benz
Center as soon as possible.
FRONT FOGLIGHT, R
CHECK LIGHT!
The right front fog lamp is malfunctioning.
Visit an authorized Mercedes-Benz
Center as soon as possible.
LOW BEAM, L
CHECK LIGHT!
The left low beam lamp is malfunctioning.
Visit an authorized Mercedes-Benz
Center as soon as possible.
LOW BEAM, R
CHECK LIGHT!
The right low beam lamp is malfunctioning.
Visit an authorized Mercedes-Benz
Center as soon as possible.
3RD BRAKE LIGHT
CHECK LIGHT!
The high mounted brake lamp is malfunc-
tioning.
Visit an authorized Mercedes-Benz
Center as soon as possible.
BRAKE LIGHT, L
CHECK LIGHT!
BACK-UP LIGHT ON!
The left brake lamp is malfunctioning. A
back-up bulb is being used.
Visit an authorized Mercedes-Benz
Center as soon as possible.
BRAKE LIGHT, R
CHECK LIGHT!
BACK-UP LIGHT ON!
The right brake lamp is malfunctioning. A
back-up bulb is being used.
Visit an authorized Mercedes-Benz
Center as soon as possible.
REVERSE LIGHT, L
CHECK LIGHT!
The left backup lamp is malfunctioning.
Replace the bulb as soon as possible.
Display
Possible cause
Possible solution
Page 288 of 384
288 Practical hintsWhat to do if …?.
REVERSE LIGHT, R
CHECK LIGHT!
The right backup lamp is malfunctioning.
Replace the bulb as soon as possible.
REAR FOGLIGHT
CHECK LIGHT!
The rear fog lamp is malfunctioning.
Replace the bulb as soon as possible.
LICENSE PLATE LIGHT, L
CHECK LIGHT!
The left license plate lamp is malfunction-
ing.
Replace the bulb as soon as possible.
LICENSE PLATE LIGHT, R
CHECK LIGHT!
The right license plate lamp is malfunction-
ing.
Replace the bulb as soon as possible.
TAIL LIGHT, L
CHECK LIGHT!
BACK-UP LIGHT ON!
The left tail lamp is malfunctioning. A
back-up bulb is being used.
Replace the bulb as soon as possible.
TAIL LIGHT, R
CHECK LIGHT!
BACK-UP LIGHT ON!
The right tail lamp is malfunctioning. A
back-up bulb is being used.
Replace the bulb as soon as possible.
TURN SIG., LR
CHECK LIGHT!
BACK-UP LIGHT ON!
The left rear turn signal lamp is malfunc-
tioning. A back-up bulb is being used.
Replace the bulb as soon as possible.
TURN SIG., RR
CHECK LIGHT!
BACK-UP LIGHT ON!
The right rear turn signal lamp is malfunc-
tioning. A back-up bulb is being used.
Replace the bulb as soon as possible.
!
PARK. BRAKE
RELEASE BRAKE!
You are driving with the parking brake en-
gaged.
Release the parking brake
(page 44).
Display
Possible cause
Possible solution
Page 289 of 384
289 Practical hints
What to do if …?
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SEAT BELT SYSTEM
VISIT WORKSHOP!
The seat belt system is malfunctioning.
Visit an authorized Mercedes-Benz
Center as soon as possible.
H
TIRE PRES. MONITOR
PRES. DISPLAY AFTER
DRIVING A FEW MINS. RE-
ACTIVATE USING R BUTTON
The tire pressure is being checked.
TIRE PRES. MONITOR
REACTIVATE!
The tire inflation pressure monitor* is de-
activated.
Activate the tire inflation pressure
monitor* (
page 248).
Display
Possible cause
Possible solution
Warning!
G
Do not drive with a flat tire. A flat tire affects
the ability to steer or brake the vehicle.
You may lose control of the vehicle. Contin-
ued driving with a flat tire will cause exces-
sive heat build-up and possibly a fire.
