Page 312 of 418
311 Practical hints
What to do if …?
When the message
ADD 1.0 QT. ENGINE
OIL AT NEXT REFUELING!
(Canada:
1 Liter
) appears while the engine is run-
ning and at operating temperature, the en-
gine oil level has dropped to approximately
the minimum level.When this occurs, the warning will first
come on intermittently and then stay on if
the oil level drops further.
Visually check for oil leaks. If no obvious oil
leaks are noted, drive to the nearest ser-
vice station where the engine oil should be
topped to the required level with an ap-
proved oil.
Display symbol
Display message
Possible cause
Possible solution
:
ENGINE OIL
VISIT WORKSHOP!
It may be that there is water in the engine
oil.
Have the engine oil level checked
(page 262).
ENGINE OIL LEVEL
VISIT WORKSHOP!
The engine oil has dropped to a critical
level.
Check the engine oil level (
page 262)
and add engine oil as required
(
page 265).
If you must add engine oil frequently,
have the engine checked for possible
leaks.
ENGINE OIL SENSOR
VISIT WORKSHOP!
The measuring system is malfunctioning.
Have the measuring system checked by
an authorized Mercedes-Benz Center.
!The engine oil level warnings should
not be ignored. Extended driving with
the symbol displayed could result in
serious engine damage that is not
covered by the Mercedes-Benz Limited
Warranty.
Page 313 of 418
312 Practical hintsWhat to do if …?Display symbol
Display messages
Possible cause
Possible solution
_
ENTRY POSITION
DO NOT DRIVE!
Seat, exterior mirrors and steering wheel
have not yet moved to their preset driving
positions.
Wait until the seat, exterior mirrors and
steering wheel have moved to their driv-
ing positions.
The message will disappear.
Y
HOOD OPEN!
You are driving with the hood open.
Close the hood (
page 261).
I
REMOVE KEY!
You have forgotten to remove the
SmartKey.
Remove the SmartKey from the starter
switch.
REPLACE KEY!
DRIVE TO WORKSHOP!
The batteries in the SmartKey are dead.
Change the batteries (
page 332).
AUTOM. LIGHT ON
REMOVE KEY!
Remove the SmartKey from the starter
switch.
SEAT BACKREST, LEFT
LOCK!
The passenger seat backrest is not en-
gaged.
Fold back and push the seat backrest un-
til the seat cushion and seat backrest au-
dibly engage into the driving position.
SEAT BACKREST, RIGHT
LOCK!
The driver seat backrest is not engaged.
Fold back and push the seat backrest un-
til the seat cushion and seat backrest au-
dibly engage into the driving position.
Page 314 of 418
313 Practical hints
What to do if …?
Display symbol
Display messages
Possible cause
Possible solution
F
KEY
CHECK BATTERY
The battery in the KEYLESS-GO* key is
discharged.
Change the battery (
page 332).
KEY
NOT RECOGNIZED!
SmartKey with KEYLESS-GO* is not rec-
ognized while the engine is running be-
cause
the SmartKey with KEYLESS-GO* is
not in the vehicle
there is strong radio-frequency inter-
ference
Stop the vehicle as soon as it is safe to do
so.
Search for the SmartKey with
KEYLESS-GO*.
Otherwise the vehicle cannot be centrally
locked nor can the engine be started again
after it has been stopped.
SmartKey with KEYLESS-GO* is momen-
tarily not recognized.
Change the position of the SmartKey with
KEYLESS-GO* in the vehicle.
Operate the vehicle with the SmartKey in
the starter switch if necessary.
KEY
DETECTED IN VEHICLE
SmartKey with KEYLESS-GO*left in the
vehicle was recognized while locking the
vehicle from the outside.
Take the SmartKey with KEYLESS-GO*
out of the vehicle.
KEY
DRIVE TO WORKSHOP!
The KEYLESS-GO* system is malfunction-
ing.
Visit an authorized Mercedes-Benz Cen-
ter as soon as possible.
Page 315 of 418
314 Practical hintsWhat to do if …?Display symbol
Display messages
Possible cause
Possible solution
.
3RD BRAKE LIGHT
CHECK LAMP!
The high mounted brake lamp is malfunc-
tioning.
Visit an authorized Mercedes-Benz Cen-
ter as soon as possible.
BRAKE LIGHT
VISIT WORKSHOP!
Brake lamp illumination is delayed or
lamp is permanently on.
Visit an authorized Mercedes-Benz Cen-
ter as soon as possible.
BRAKE LIGHT, L
CHECK LAMP!
SUBSTITUTE LAMP ON!
The left brake lamp is malfunctioning. A
back-up bulb is being used.
Visit an authorized Mercedes-Benz Cen-
ter as soon as possible.
BRAKE LIGHT, R
CHECK LAMP!
SUBSTITUTE LAMP ON!
The right brake lamp is malfunctioning. A
back-up bulb is being used.
Visit an authorized Mercedes-Benz Cen-
ter as soon as possible.
DISPLAY MALFUNCTION
VISIT WORKSHOP!
The display for the lamps or the system is
malfunctioning.
Visit an authorized Mercedes-Benz Cen-
ter as soon as possible.
FRONT FOGLAMP, L
CHECK LAMP!
The left front fog lamp is malfunctioning.
Visit an authorized Mercedes-Benz Cen-
ter as soon as possible.
FRONT FOGLAMP, R
CHECK LAMP!
The right front fog lamp is malfunctioning.
Visit an authorized Mercedes-Benz Cen-
ter as soon as possible.
FR. L. PARK. LAMP
CHECK LAMP!
SUBSTITUTE LAMP ON!
The left parking lamps are malfunction-
ing. A back-up bulb is being used.
Replace the bulb as soon as possible.
FR. R. PARK. LAMP
CHECK LAMP!
SUBSTITUTE LAMP ON!
The right parking lamps are malfunction-
ing. A back-up bulb is being used.
Replace the bulb as soon as possible.
Page 316 of 418
315 Practical hints
What to do if …?
Display symbol
Display messages
Possible cause
Possible solution
.
HIGH BEAM, L
CHECK LAMP!
The left high beam lamp flasher is mal-
functioning.
Replace the bulb as soon as possible.
HIGH BEAM, R
CHECK LAMP!
The right high beam flasher lamp is mal-
functioning.
Replace the bulb as soon as possible.
LICENSE PLATE LAMP, L
CHECK LAMP!
The left license plate lamp is malfunction-
ing.
Replace the bulb as soon as possible.
LICENSE PLATE LAMP, R
CHECK LAMP!
The right license plate lamp is malfunc-
tioning.
Replace the bulb as soon as possible.
LIGHT SENSOR
DRIVE TO WORKSHOP!
The lamp sensor is malfunctioning. The
headlamps switch on automatically.
In the control system, set lamp operation
to manual (
page 150).
Switch on headlamps using the exterior
lamp switch.
Visit an authorized Mercedes-Benz Cen-
ter as soon as possible.
LOW BEAM, L
CHECK LAMP!
The left low beam lamp is malfunctioning.
Visit an authorized Mercedes-Benz Cen-
ter as soon as possible.
LOW BEAM, R
CHECK LAMP!
The right low beam lamp is malfunction-
ing.
Visit an authorized Mercedes-Benz Cen-
ter as soon as possible.
MARKER LIGHT, FL
CHECK LAMP!
The front left side marker lamp is mal-
functioning.
Replace the bulb as soon as possible.
Page 317 of 418
316 Practical hintsWhat to do if …?Display symbol
Display messages
Possible cause
Possible solution
.
MARKER LIGHT, FR
CHECK LAMP!
The front right side marker lamp is mal-
functioning.
Replace the bulb as soon as possible.
REAR FOGLAMP
CHECK LAMP!
The rear fog lamp is malfunctioning.
Replace the bulb as soon as possible.
REVERSE LIGHT, L
CHECK LAMP!
The left backup lamp is malfunctioning.
Replace the bulb as soon as possible.
REVERSE LIGHT, R
CHECK LAMP!
The right backup lamp is malfunctioning.
Replace the bulb as soon as possible.
STANDING LIGHT, L
CHECK LAMP!
SUBSTITUTE LAMP ON!
The left standing lamp is malfunctioning.
A back-up bulb is being used.
Replace the bulb as soon as possible.
STANDING LIGHT, R
CHECK LAMP!
SUBSTITUTE LAMP ON!
The right standing signal lamp is malfunc-
tioning. A back-up bulb is being used.
Replace the bulb as soon as possible.
TAIL LIGHT, L
CHECK LAMP!
SUBSTITUTE LAMP 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 LAMP!
SUBSTITUTE LAMP ON!
The right tail lamp is malfunctioning. A
back-up bulb is being used.
Replace the bulb as soon as possible.
Page 318 of 418
317 Practical hints
What to do if …?
Display symbol
Display messages
Possible cause
Possible solution
.
SWITCH OFF LIGHTS!
Lamps have been turned on although the
SmartKey in the starter switch is in
position0.
Turn off the headlamps.
TURN SIGNAL F, L
CHECK LAMP!
SUBSTITUTE LAMP ON!
The left front turn signal lamp is malfunc-
tioning. A back-up bulb is being used.
Replace the bulb as soon as possible.
TURN SIGNAL F, R
CHECK LAMP!
SUBSTITUTE LAMP ON!
The right front turn signal lamp is mal-
functioning. A back-up bulb is being used.
Replace the bulb as soon as possible.
TURN SIGNAL, L
CHECK LAMP!
SUBSTITUTE LAMP 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 SIGNAL, R
CHECK LAMP!
SUBSTITUTE LAMP ON!
The right rear turn signal lamp is malfunc-
tioning. A back-up bulb is being used.
Replace the bulb as soon as possible.
TURN SIG. MIRROR, L
CHECK LAMP!
The left turn signal in the side mirror is
malfunctioning. This message will only
appear if all light emitting diodes have
stopped working.
Visit an authorized Mercedes-Benz Cen-
ter as soon as possible.
Page 319 of 418
318 Practical hintsWhat to do if …?Display symbol
Display messages
Possible cause
Possible solution
.
TURN SIG. MIRROR, R
CHECK LAMP!
The right turn signal in the side mirror is
malfunctioning. This message will only
appear if all light emitting diodes have
stopped working.
Visit an authorized Mercedes-Benz Cen-
ter as soon as possible.
<
SEAT BELT SYSTEM
VISIT WORKSHOP!
The seat belt system is malfunctioning.
Visit an authorized Mercedes-Benz
Center as soon as possible.
J
CLOSE
SUNROOF!
You have opened the driver’s door with
the SmartKey removed from the starter
switch and the sliding/pop up roof open.
Close the sliding/pop-up roof
(page 191).
K
CLOSE
SUNROOF!
You have opened the driver’s door with
the SmartKey removed from the starter
switch and the sliding/pop up roof open.
Close the sliding/pop-up roof
(page 191).
L
TELE AID MALFUNCTION
DRIVE TO WORKSHOP!
One or more main functions of the Tele
Aid system are malfunctioning.
Have the Tele Aid system checked by an
authorized Mercedes-Benz Center.
TELE AID BATTERY
DRIVE TO WORKSHOP!
The emergency power battery for the Tele
Aid system is malfunctioning. If the vehi-
cle battery is also discharged, Tele Aid
will not be operational.
Have the Tele Aid system checked by an
authorized Mercedes-Benz Center.