lights MERCEDES-BENZ C300 SPORT 2008 W204 User Guide

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).

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.

452 Practical hints
Jump starting
The battery is located in the engine com-
partment on the right hand side. For jump
starting, use the under hood terminals in
front of the battery.
Make sure the two vehicles do not
touch.
Turn off all electrical consumers,
except hazard warning flashers or work
lights.
Apply the parking brake (page 134).
Make sure gear selector lever* is set to
positionP (manual transmission to
Neutral).
Open the hood (page 326).
Slide red cover2 from positive under
hood terminal3 in direction of arrow. 1Positive terminal of charged battery
2Positive under hood terminal cover
3Positive under hood terminal in front of
discharged battery
4Negative under hood terminal
5Negative terminal of charged battery
Connect positive terminal1 of the
charged battery with positive under
hood terminal3 in front of the dis-
charged battery with the jumper cable.
Clamp cable to charged battery1
first.
Start the engine of the vehicle with the
charged battery and run at idle speed.
Connect negative terminal5 of the
charged battery to jumper cables and
attach other end to negative under
hood terminal4 on the vehicle. Clamp
cable to charged battery5 first
Start the engine of the disabled
vehicle.
You can now turn on the electrical con-
sumers. Do not switch on the headlamps
under any circumstances.
Remove the jumper cables first from
the negative terminals4 and5 and
then from the positive terminals3
and1.
You can now switch on the headlamps.
Slide red cover2 from positive under
hood terminal3 back.
Close the hood (page 326).
Have the battery checked at the near-
est authorized Mercedes-Benz Center.
!Never invert the terminal connections.