bulbs MERCEDES-BENZ C300 2008 W204 Owner's Manual

Contents
At the gas station .............................. 322
Refueling ...................................... 322
Check regularly and
before a long trip.......................... 324
Engine compartment ......................... 325
Hood ............................................ 325
Engine oil ..................................... 327
Transmission fluid level ................ 328
Coolant level ................................ 329
Windshield washer system and
headlamp cleaning system* ......... 330
Tires and wheels ................................ 331
Important guidelines .................... 331
Tire care and maintenance........... 332
Direction of rotation ..................... 334
Loading the vehicle ...................... 334
Recommended tire
inflation pressure ......................... 339
Checking tire inflation pressure ... 341
Tire labeling.................................. 348
Load identification ....................... 352
DOT,
Tire Identification Number (TIN) ... 352
Maximum tire load ....................... 353
Maximum tire inflation pressure .. 354Uniform Tire Quality Grading
Standards (U.S. vehicles) .............. 354
Tire ply material ............................ 356
Tire and loading terminology......... 356
Rotating tires ................................ 359
Winter driving ..................................... 360
Winter tires ................................... 360
Snow chains.................................. 361
Maintenance....................................... 362
Maintenance
service indicator message ............ 362
Calling up the maintenance
service indicator display ............... 363
Resetting the maintenance
service indicator ........................... 363
Vehicle care........................................ 364
Cleaning and care of vehicle ......... 364
Practical hints.................................. 373
What to do if …? ................................. 374
Lamps in instrument cluster ......... 374
Air bag off indicator lamp ............. 385
Vehicle status messages in
the multifunction display .............. 387
Where will I find ...? ............................ 420
First aid kit.................................... 420
Vehicle jack, vehicle tool kit,
luggage bowl, Minispare wheel ..... 420
Unlocking/locking in an emergency .. 424
Unlocking the vehicle ................... 424
Locking the vehicle ....................... 425
Fuel filler flap ................................ 426
Manually unlocking the
transmission gear selector lever ... 426
Resetting activated head restraints.... 427
Replacing SmartKey batteries ............ 428
Replacing bulbs .................................. 430
Bulbs............................................. 431
Replacing bulbs for front lamps .... 432
Replacing bulbs for rear lamps ..... 436
Replacing wiper blades ...................... 438
Removing wiper blades ................. 439
Installing wiper blades .................. 439

324 Operation
At the gas station
Check regularly and before a long trip
1Coolant level
2Brake fluid
3Windshield washer and headlamp
cleaning system*Windshield washer system and head-
lamp cleaning system*
For more information on refilling the wash-
er reservoir, see “Windshield washer sys-
tem and headlamp cleaning system*”
(
page 330).
Coolant
For more information on coolant, see
“Coolant level” (
page 329) and see “Fu-
els, coolants, lubricants, etc.”
(
page 476).
Brake fluid
For information on brake fluid, see “Brake
fluid” (
page 480).Engine oil level
For more information on engine oil, see
“Engine oil” (
page 327).
Vehicle lighting
Check function and cleanliness. For more
information on replacing light bulbs, see
“Replacing bulbs” (
page 430).
For more information, see “Lighting”
(
page 108).
Tire inflation pressure
For information on tire inflation pressure,
see “Checking tire inflation pressure”
(
page 341).iOpening the hood (page 325).!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 immediately. Notify an
authorized Mercedes-Benz Center immediately.
Do not add brake fluid as this will not solve the
problem. For more information, see “Practical
hints” (
page 376) and (page 400).

373 Practical hints
What to do if …?
Where will I find ...?
Unlocking/locking in an emergency
Resetting activated head restraints
Replacing SmartKey batteries
Replacing bulbs
Replacing wiper blades
Flat tire
Battery
Jump starting
Towing the vehicle
Fuses

430 Practical hints
Replacing bulbs
Safe vehicle operation depends on proper
exterior lighting and signaling. It is there-
fore essential that all bulbs and lamp
assemblies 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 an authorized
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 distance with the
lights on should clear up the fogging.
iBackup bulbs will be brought into use when
lamps malfunction. Read and observe the mes-
sages in the multifunction display (
page 413).

431 Practical hints
Replacing bulbs
Bulbs Front lamps Rear lamps
LampType
1Additional turn signal
lampLED
2Turn signal lampPY 21 W
3Halogen headlamp:
Low beam
Bi-Xenon* headlamp:
Low and high beam
1
1Regarding vehicles with Bi-Xenon headlamps*, do
not replace the Bi-Xenon bulbs yourself.
H7 (55 W)
D1S-35 W
4Halogen headlamp:
High beam/high beam
flasher
Bi-Xenon* headlamp:
High beam flasher
H7 (55 W)
H7 (55 W)
5Front fog lamp
Corner-illuminating
front fog lamp*H11 (55 W)
H11 (55 W)
6Side marker lampW 5 W
7Parking and standing
lamp2 x
W5W-BV
LampType
8High mounted brake
lampLED
9Side markerW 5 W
aTurn signal lampPY 21 W
bBrake lamp, parking
and standing lamp, tail
lamp2 x P 21 W
cBackup lampP 21 W
dLicense plate lampsW 5 W
eRear fog lamp
(driver’s side only),
Side markerP 21 W
W 5 W

432 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
come on, visit an authorized
Mercedes-Benz Center.Have the LEDs and bulbs for the following
lamps replaced at an authorized
Mercedes-Benz Center.

Additional turn signal lamps in the exte-
rior rear view mirrors

High mounted brake lamp

Bi-Xenon* lamps

Front fog lamps

Front side marker lamps

License plate lamps
Replacing bulbs for front lamps
Before you start to replace a bulb for a
front lamp, do the following first:
Turn the exterior lamp switch to
positionM (
page 108).
Open the hood (page 325).
Warning!G
Keep bulbs out of reach of children.
Bulbs and bulb sockets can be very hot. Al-
low the lamp to cool down before changing
a bulb.
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 Xenon lamps, it is
dangerous to replace the bulb or repair the
lamp and its components. We recommend
that you have such work done by a qualified
technician.!Do not replace the LEDs yourself. You could
otherwise damage the LEDs or parts of the
vehicle. Only have the LEDs replaced at an au-
thorized Mercedes-Benz Center.

433 Practical hints
Replacing bulbs
Front lamps halogen-type
1Bulb socket for turn signal lamp bulb
2Housing cover for parking and standing
lamp
3Housing cover for parking and standing
lamp
4Housing cover for high beam headlamp
5Housing cover for low beam headlamp6Bulb socket for parking and standing
lamp bulb
7Bulb holder of high beam bulb
8Bulb holder of low beam bulb
Low beam bulb
Turn housing cover5 counterclock-
wise and remove it.
Pull electric plug off the bulb.
Remove wire clip from bulb holder8
by pushing down and release from ar-
restor hook.
Pull the bulb at its socket out of bulb
holder8.
Insert the new bulb so that its socket
locates in the recess of bulb holder8
and is level to it.
Fold wire clip back and press it down
on bulb holder8 to engage it in the ar-
restor hook.
Connect electric plug on the bulb.
Align housing cover5 and turn it
clockwise.
High beam bulb
Turn housing cover4 counterclock-
wise and remove it.
Turn bulb holder7 with the bulb coun-
terclockwise and remove it.
Pull the bulb at its socket out of bulb
holder7.
Insert the new bulb so that its socket
locates in the recess of bulb holder7
and is level to it.
Reinsert bulb holder7 with the bulb in
the lamp and turn clockwise.


434 Practical hints
Replacing bulbs
Align housing cover4 and turn it
clockwise.
Front turn signal lamp bulb
1Mark
2Handle
3Bulb socket
Turn bulb socket3 with handle2
counterclockwise and remove it.
Press gently onto the bulb and turn
counterclockwise out of bulb
socket3.
Press the new bulb gently into bulb
socket3 and turn clockwise until it
engages.
Place bulb socket3 back into the
lamp. Handle2 must be in a horizon-
tal line and mark1 is on the upper
part.
Turn bulb socket3 clockwise until it
engage.
Parking and standing lamp bulb
Turn housing cover2 or3 counter-
clockwise and remove it.
Pull out bulb socket6 with the bulb.
Pull the bulb out of the bulb socket6.
Press the new bulb into bulb socket6.
Press bulb socket6 back into the
lamp.
Align housing cover2 or3 and turn
it clockwise.Front lamps Bi-Xenon*-type
Warning!G
Do not remove the cover5 for the Bi-Xe-
non* headlamp. Because of high voltage in
Xenon lamps, it is dangerous to replace the
bulb or repair the lamp and its components.
We recommend that you have such work
done by a qualified technician.


435 Practical hints
Replacing bulbs
1Bulb socket for turn signal lamp bulb
2Housing cover for parking and standing
lamp
3Housing cover for parking and standing
lamp
4Housing cover for high beam flasher
5Housing cover for Bi-Xenon headlamp6Bulb socket for parking and standing
lamp bulb
7Bulb holder for high beam flasher bulb
7Bulb holder for high beam bulbHigh beam bulb for high beam flasher
Turn housing cover4 counterclock-
wise and remove it.
Pull electric plug off the bulb.
Pull out bulb holder7 with the bulb.
Pull the bulb at its socket out of bulb
holder7.
Insert the new bulb so that its socket
locates in the recess of bulb holder7
and is level to it.
Reinsert bulb holder7 with the bulb in
the lamp.
Connect electric plug on the bulb.
Align housing cover4 and turn it
clockwise.

436 Practical hints
Replacing bulbs
Front turn signal lamp bulb
1Mark
2Handle
3Bulb socket
Turn bulb socket3 with handle2
counterclockwise and remove it.
Press gently onto the bulb and turn
counterclockwise out of bulb
socket3.
Press the new bulb gently into bulb
socket3 and turn clockwise until it
engages.
Place bulb socket3 back into the
lamp. Handle2 must be in a horizon-
tal line and mark1 is on the upper
part.
Turn bulb socket3 clockwise until it
engage.
Parking and standing lamp bulb
Turn housing cover2 or3 counter-
clockwise and remove it.
Pull out bulb socket6 with the bulb.
Pull the bulb out of the bulb socket6.
Press the new bulb into bulb socket6.
Press bulb socket6 back into the
lamp.
Align housing cover2 or3 and turn
it clockwise.Additional turn signal lamps
The additional turn signal lamps in the ex-
terior rear view mirrors have LEDs.
If a malfunction occurs or LEDs fail to func-
tion, the entire turn signal unit must be re-
placed. Have the additional turn signal unit
replaced at an authorized Mercedes-Benz
Center.
Front side marker lamp
Since replacing the side marker lamp bulbs
is a technically highly demanding process,
we recommend you have the side marker
lamp bulbs replaced at an authorized
Mercedes-Benz Center.Replacing bulbs for rear lamps
Before you start to replace a bulb for a rear
lamp, do the following first:
Turn the exterior lamp switch to
positionM (
page 108).