Page 410 of 521

409 Practical hints
What to do if …
Display symbol
Display messages
Possible cause/consequence
Possible solution
.
Brake lamp
Drive to workshop
Brake lamp illumination is delayed or
lamp is permanently on.
Visit an authorized Mercedes-Benz
Center as soon as possible.
Brake lamp, left
Substitute bulb on
The left brake lamp is malfunctioning. A
substitute bulb is being used.
Visit an authorized Mercedes-Benz
Center as soon as possible.
Brake lamp, right
Substitute bulb on
The right brake lamp is malfunctioning. A
substitute bulb is being used.
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.
Front foglamp,
left
The left front fog lamp is malfunctioning.
Replace the bulb as soon as possible.
Front foglamp,
right
The right front fog lamp is malfunctioning.
Replace the bulb as soon as possible.
Active headlamps
currently
unavailable
The active headlamps are malfunctioning.
Visit an authorized Mercedes-Benz
Center as soon as possible.
Active headlamps
Backup lamp on
The active headlamps are malfunctioning.
Another light is being used.
Visit an authorized Mercedes-Benz
Center as soon as possible.
Active headlamps
malfunction
Drive to workshop
The active headlamps have malfunc-
tioned several times in succession.
Visit an authorized Mercedes-Benz
Center as soon as possible.
Page 412 of 521

411 Practical hints
What to do if …
Display symbol
Display messages
Possible cause/consequence
Possible solution
.
Low beam,
right
The right low beam lamp is malfunction-
ing.
Halogen headlamp:
Replace the bulb as soon as possible.
Bi-Xenon* headlamp:
Visit an authorized Mercedes-Benz
Center as soon as possible.
Front Marker light,
left
The front left side marker lamp is mal-
functioning.
Visit an authorized Mercedes-Benz
Center as soon as possible.
Front Marker light,
right
The front right side marker lamp is mal-
functioning.
Visit an authorized Mercedes-Benz
Center as soon as possible.
Fr. Park. lamp, left
The left parking lamps are malfunction-
ing.
Visit an authorized Mercedes-Benz
Center as soon as possible.
Fr. Park. lamp, right
The right parking lamps are malfunction-
ing.
Visit an authorized Mercedes-Benz
Center as soon as possible.
Rear foglamp
Substitute bulb on
The rear fog lamp is malfunctioning. A
substitute bulb is being used.
Replace the bulb as soon as possible.
Switch off lamps
Lamps have been turned on although the
SmartKey in the starter switch is in posi-
tion 0.
Switch off the headlights.
Page 432 of 521
431 Practical hints
Replacing bulbs
Replacing bulbs
Bulbs
Safe vehicle operation depends on proper
exterior lighting and signaling. It is there-
fore essential that all bulbs and lamp as-
semblies are in good working order at all
times.
Correct headlamp adjustment is extremely
important. Have headlamps checked and
readjusted at regular intervals and when a
bulb has been replaced. See your autho-
rized Mercedes-Benz Center for headlamp
adjustment.
iIf the headlamps or front fog lamps are
fogged up on the inside as a result of
high humidity, driving the vehicle a dis-
tance with the lights on should clear up
the fogging.
iSubstitute bulbs will be brought into
use when lamps malfunction. Read and
observe messages in the multifunction
display (
page 409).
Page 434 of 521

433 Practical hints
Replacing bulbs
Notes on bulb replacement
Only use 12-volt bulbs of the same type
and with the specified watt rating.
Switch lights off before changing a bulb
to prevent short circuits.
Always use a clean lint-free cloth when
handling bulbs.
Your hands should be dry and free of oil
and grease.
If the newly installed bulb does not light
up, visit an authorized Mercedes-Benz
Center.
Have the LEDs and bulbs for the follow-
ing lamps replaced by an authorized
Mercedes-Benz Center:
Additional turn signals in the exteri-
or rear view mirrors
High mounted brake lamp
Bi-Xenon* lamps
Front fog lamps
Rear lamps (except license plate
lamps)
Front side marker lamps
Warning!
G
Bulbs and bulb sockets can be very hot. Al-
low the lamp to cool down before changing
a bulb.
Keep bulbs out of reach of children.
Halogen lamps contain pressurized gas. A
bulb can explode if you:
touch or move it when hot
drop the bulb
scratch the bulb
Wear eye and hand protection.
Because of high voltage in Bi-Xenon* lamps,
it is dangerous to replace the bulb or repair
the lamp and its components. We recom-
mend that you have such work done by a
qualified technician.
iHave the headlamp adjustment
checked regularly.
Page 507 of 521

506 IndexL
Labels
Certification 468
Emission control information 468
Emission control vacuum line
routing 468
Lamp sensor
Message in display 411
Lamps, exterior
Light sensor 410, 411
Messages in display 409, 410, 411,
412
Lamps, indicator and warning
ABS 25, 372
Battery (SmartKey) 109, 115
Brakes 374
CHECK ENGINE 375
Coolant 376
Distance warning lamp* 246
Electrohydraulic brake system 96
Engine diagnostics 375
Engine malfunction 25, 375
ESP
®
25, 373
Fog lamps 146
Front passenger front air bag off 27,
72, 382Fuel reserve 25, 377
High beam headlamps 25
Instrument cluster 372, 373, 374,
375, 376, 377, 378, 380
Low beam headlamps 25
Maintenance service indicator 358
Seat belt telltale 25
Seat belts 377
SRS 66
Turn signals 25
Language, Setting 168
LATCH-type child seat anchors see Chil-
dren in the vehicle
License plate lamps 432
Messages in display 410
Replacing bulbs 436
Light alloy wheels, cleaning 367
Light sensor see Lamp sensor
Lighter see Cigarette lighter 278
Lighting
Daytime running lamp mode 144
Lighting, Exterior and interior 143
Limp Home Mode 196
Loading 260
Split rear bench seat* 260
Loading see Vehicle loadingLocator lighting 173
Lock button 493
Door handle (KEYLESS-GO*) 63
Loss of Service and Warranty Information
Booklet 467
Loss of SmartKeys 111, 118
Low beam headlamps 54
Indicator lamp 25
Messages in display 410
Replacing bulbs 432
Switching on 54
Lubricants 482
Lumbar support 133
M
Maintenance 12
Calling up service indicator 360
Clearing service indicator
message 359
FSS (Canada vehicles) 358
Maintenance System (U.S.
vehicles) 358
Resetting service indicator 361
Service indicator 358
Service indicator message 358
Service term exceeded 360