Lamp MERCEDES-BENZ C240 2005 W203 Owner's Manual

346 Practical hintsReplacing 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 by an authorized
Mercedes-Benz Center:


Additional turn signals in the exterior
rear view mirrors


High mounted brake lamp


Xenon* lamps


Front fog lamps
Warning!
G
Bulbs and bulb sockets can be very hot.
Allow 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 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.
iHave the headlamp adjustment
checked regularly.

347 Practical hints
Replacing bulbs
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 109).

Open the hood (
page 278) (except
for side marker lamps).
Halogen headlamp
1Housing cover for low beam headlamp
2Housing cover for high beam head-
lamp, parking and standing lamp3Bulb socket for turn signal lamp bulb
4Bulb socket for low beam bulb
5Bulb socket for high beam bulb
6Bulb socket for parking and standing
lamp bulbLow beam bulb

Press the clamp on housing cover1
and remove it.

Pull the electrical connector off.

Turn bulb socket4 counterclockwise
and take out the bulb.

Insert the new bulb so that its socket
locates in the recess of the lamp
housing.

Turn bulb socket4 clockwise until it
engages.

Plug the electrical connector onto the
bulb.

Align housing cover1 and press until
it engages.

348 Practical hintsReplacing bulbsHigh beam bulb
Press the clamp on housing cover2
and remove it.

Pull the electrical connector off.

Turn bulb socket5 counterclockwise
and take out the bulb.

Insert the new bulb so that its socket
locates in the recess of the lamp
housing.

Turn bulb socket5 clockwise until it
engages.

Plug the electrical connector onto the
bulb.

Align housing cover2 and press until
it engages.Front turn signal lamp bulb

Turn bulb socket3 with the bulb
counterclockwise and remove it.

Press gently onto the bulb and turn it
counterclockwise out of bulb
socket3.

Press new bulb gently into bulb
socket3 and turn clockwise until it
engages.

Place bulb socket3 back into the
lamp and turn it clockwise.Parking and standing lamp bulb

Press the clamp on housing cover2
and remove it.

Pull out bulb socket6 with the bulb.

Pull the bulb out of bulb socket6.

Press the new bulb into bulb socket6.

Press bulb socket6 back into the
lamp.

Align housing cover2 and press until
it engages.

349 Practical hints
Replacing bulbs
Bi-Xenon* headlamp
1Housing cover for Bi-Xenon headlamp
2Housing cover for high beam flasher,
parking and standing lamp3Bulb socket for turn signal lamp bulb
4Bulb socket for high beam flasher bulb
5Bulb socket for parking and standing
lamp bulbHigh beam flasher bulb

Press the clamp on housing cover2
and remove it.

Pull the electrical connector off.

Turn bulb socket4 counterclockwise
and take out the bulb.

Insert the new bulb so that its socket
locates in the recess of the lamp
housing.

Turn bulb socket4 clockwise until it
engages.

Plug the electrical connector onto the
bulb.

Align housing cover2 and press until
it engages.
Warning!
G
Do not remove the cover1 for the
Bi-Xenon headlamp. Because of high voltage
in Bi-Xenon lamps, it is dangerous to replace
the bulb or repair the lamp and its compo-
nents. We recommend that you have such
work done by a qualified technician.

350 Practical hintsReplacing bulbsFront turn signal lamp bulb
Turn bulb socket3 with the bulb
counterclockwise and remove it.

Press gently onto the bulb and turn it
counterclockwise out of bulb
socket3.

Press new bulb gently into bulb
socket3 and turn clockwise until it
engages.

Place bulb socket3 back into the
lamp and turn it clockwise.Parking and standing lamp bulb

Press the clamp on housing cover2
and remove it.

Pull out bulb socket5 with the bulb.

Pull the bulb out of bulb socket5.

Press the new bulb into bulb socket5.

Press bulb socket5 back into the
lamp.

Align housing cover2 and press until
it engages.Side marker lamp

Carefully slide the lamp towards the
rear in direction of arrows.

Remove the front end first.

Turn the bulb socket with the bulb
counterclockwise and remove it.

Pull the bulb out of the bulb socket.

Insert the new bulb into the bulb
socket.

Place the bulb socket back into the
lamp and turn it clockwise.

To reinstall the lamp, set the rear end in
the bumper and let the front end
engage.

351 Practical hints
Replacing bulbs
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 109).

Open the trunk lid (
page 92).
Tail lamp unit
1Latch

Fold the corresponding trim panel to
the side.

Turn latch1 to vertical position and
remove the bulb carrier.
Bulb carrier2Brake lamp bulb
3Backup lamp bulb
4Rear fog lamp (driver’s side only),
tail and standing lamp bulb
5Parking and side marker lamp bulb
6Turn signal lamp bulb
Press gently onto the respective bulb
and turn counterclockwise out of its
bulb socket.

Press the new bulb gently into its bulb
socket and turn clockwise until it
engages.

Reinstall the bulb carrier and lock it
again with latch1.

Reinstall the trim panel.
License plate lamp
1Screw

Loosen both screws1.

Remove the license plate lamp.

Replace the bulb.

Reinstall the license plate lamp.

Retighten screws1.

360 Practical hintsBatteryThe battery is located in the engine
compartment on the right hand side.
1Clamps
Removing filter box:
Release clamps1.

Remove filter box.
Installing filter box:

Insert filter box properly.

Secure it with clamps1.
Warning!
G
Failure to follow these instructions can
result in severe injury or death.
Observe all safety instructions and
precautions when handling automotive
batteries (
page 284).
Never lean over batteries while connecting,
you might get injured.
Battery fluid contains sulfuric acid. Do not
allow this fluid to come in contact with eyes,
skin or clothing. In case it does, immediately
flush affected area with water and seek
medical help if necessary.
A battery will also produce hydrogen gas,
which is flammable and explosive. Keep
flames or sparks away from battery, avoid
improper connection of jumper cables,
smoking, etc.
!Never loosen or detach battery termi-
nal clamps while the engine is running
or the SmartKey is in the starter switch.
Otherwise the alternator and other
electronic components could be se-
verely damaged.
Have the battery checked regularly by
an authorized Mercedes-Benz Center.
Refer to Maintenance Booklet for
maintenance intervals or contact an
authorized Mercedes-Benz Center for
further information.Warning!
G
Do not place metal objects on the battery as
this could result in a short circuit.
Use leak-proof battery only to avoid the risk
of acid burns in the event of an accident.

363 Practical hints
Jump starting
Jump starting
If the battery is discharged, the engine can
be started with jumper cables and the
battery of another vehicle. Observe the
following:

Jump starting should only be performed
when the engine and catalytic con-
verter are cold.


Do not start the engine if the battery is
frozen. Let the battery thaw out first.


Only jump start from batteries with the
same voltage rating (12 V). Jump
starting with a more powerful battery
could damage the vehicle’s electrical
system, which will not be covered by
the Mercedes-Benz Limited Warranty.


Only use jumper cables with sufficient
cross-section and insulated terminal
clamps.


Always make sure the jumper cables
are not on or near pulleys, fans, or oth-
er parts that move when an engine is
started or running.
Warning!
G
Failure to follow these directions will cause
damage to the electronic components, and
can lead to a battery explosion and severe
injury or death.
Never lean over batteries while connecting
or jump starting, you might get injured.
Battery fluid contains sulfuric acid. Do not
allow this fluid to come in contact with eyes,
skin or clothing. In case it does, immediately
flush affected area with water, and seek
medical help if necessary.
A battery will also produce hydrogen gas,
which is flammable and very explosive. Keep
flames or sparks away from battery, avoid
improper connection of jumper cables,
smoking, etc.
Attempting to jump start a frozen battery
can result in it exploding, causing personal
injury.
Read all instructions before proceeding.
!Jump starting may only be performed
on the battery installed in the engine
compartment.
Avoid repeated and lengthy starting
attempts.
Do not attempt to start the engine
using a battery quick charge unit.
If engine does not run after several
unsuccessful starting attempts, have it
checked at the nearest authorized
Mercedes-Benz Center.
Excessive unburned fuel generated by
repeated failed starting attempts may
damage the catalytic converter and
may present a fire risk.
Make sure the jumper cables do not
have loose or missing insulation.
Make sure the cable clamps do not
touch any other metal part while the
other end is still attached to a battery.

364 Practical hintsJump startingThe battery is located in the engine
compartment on the right hand side. The
terminals for jump starting are located in
front of the battery.
Make sure the two vehicles do not
touch.

Turn off all electrical consumers.

Apply parking brake.

Shift gear selector lever to positionP
(manual transmission to Neutral).1Positive terminal of charged battery
2Positive under hood terminal in front of
discharged battery
3Negative under hood terminal in front
of discharged battery
4Negative terminal of charged battery

Connect positive terminal1 of the
charged battery with positive under
hood terminal2 in front of the
discharged battery with the jumper
cables. Clamp cable to charged
battery1 first.

Start engine of the vehicle with the
charged battery and run at idle speed.

Connect negative terminal4 of the
charged battery with negative under
hood terminal3 in front of the
discharged battery with the jumper
cables. Clamp cable to charged
battery4 first.

Start the engine of the disabled
vehicle.
You can now again turn on the electrical
consumers. Do not turn on the lights under
any circumstances.

Remove the jumper cables first from
negative terminals4 and3 and then
from positive terminals1 and2.
You can now turn on the lights.

Have the battery checked at the near-
est authorized Mercedes-Benz Center.
Warning!
G
Keep flames or sparks away from battery.
Do not smoke.
Observe all safety instructions and precau-
tions when handling automotive batteries
(page 284).
!Vehicles with automatic transmission
and/or 4MATIC:
Do not tow-start the vehicle.

370 Practical hintsFusesMain fuse box in passenger compartment
The main fuse box is located in the passen-
ger compartment on the driver’s side of
the cockpit.
1Main fuse box cover
Opening fuse box
Open the driver’s door.

Pull fuse box cover1 open with a
screw driver or similar tool (see arrow).

Remove fuse box cover1 rearward.Closing fuse box

Attach fuse box cover1 in the front.

Fold fuse box cover1 in until it
engages.
Fuse box in engine compartment
The fuse box is located in the engine
compartment on the driver’s side.
1Cover
2Screws
3RetainerRemoving cover

Twist screws2
90° counterclockwise.

Lift the rear of cover1.

Slide out retainer3 and remove
cover1 by pulling towards front.
Opening fuse box
4Fuse box cover
5Clamps

With a dry cloth, remove any moisture
from the fuse box.

Release clamps5.

Remove fuse box cover4.