2003 MERCEDES-BENZ C320 COUPE light

284 Practical hintsReplacing bulbs
Turn bulb holder5 with bulb to the left
and pull out.

Pull out bulb from the base (do not pull
on glass tube).

Insert new bulb so that the base fits in
the bulb holder recess and is level.

Place the bulb holder with bulb on the
headlamp mounting and turn bulb hold-
er to the right until it engages.

Replace headlamp cover2 and turn to
the right until it engages.Front turn signal lamp bulb

Switch off the lights.

Open the hood (
page 226).

Turn bulb socket1 to the left and pull
out.

Push bulb into socket, turn to the left
and remove.

Insert new bulb in socket, push in and
turn to the right.

Reinsert bulb socket in lamp and turn
to the right.Parking and standing lamp bulb

Switch off the lights.

Open the hood (
page 226).

Turn headlamp cover2 to the left and
remove.

Pull out the bulb socket6 with the
bulb.

Pull the bulb out of the bulb socket.

Insert a new bulb in the socket.

Reinstall the bulb socket.

Replace headlamp cover2 and turn to
the right until it engages.

285 Practical hints
Replacing bulbs
Side marker lamp bulb
Switch off the lights.

Carefully slide lamp towards rear.

Remove front end first.

Twist bulb socket counterclockwise
and pull out.

Pull bulb out of the bulb socket.

Insert new bulb in socket.

Reinstall bulb socket, push in and twist
clockwise.

To reinstall lamp, set rear end in
bumper and let front end snap into
place.
Replacing bulbs for rear lamps
Tail lamp assemblies
Switch off the lights.

Open the trunk lid (
page 85).

Turn handles2.

Remove the trim panel1.

Press together the latches1.

Remove bulb holder.

Gently push bulb into socket, turn
counterclockwise and remove.

Insert new bulb and reinstall bulb sock-
et.

Reinstall trim panel.

286 Practical hintsReplacing bulbs1Stop lamp
2Back up lamp
3Turn signal lamp
4Tail, parking, standing and rear fog
lamp (driver’s side)License plate lamp
1Screws

Switch off the lights.

Loosen both screws1 and remove
lamp.

Replace the tubular lamp and reinstall
lamp.

Retighten the screws.

290 Practical hintsFlat tireRemoving the wheel
1Alignment bolt
Unscrew upper-most wheel bolt and re-
move.

Replace this wheel bolt with the align-
ment bolt1 supplied in the tool kit.

Remove the remaining bolts.

Remove the wheel.

Take the spare tire out of the trunk.
Mounting the new wheel
1Wheel bolt for light alloy rims
2Wheel bolt for light alloy spare wheel
rim size 4
1/2B x15 H2

Clean contact surfaces of wheel and
wheel hub.

Guide the spare wheel onto the align-
ment bolt and push it on.

Insert wheel bolts and tighten them
slightly.

Inflate the spare tire using the electric
pump (
page 292).
!Do not place wheel bolts in sand or dirt.
This could result in damage to the bolt
and wheel hub threads.
!Wheel bolts2 must be used when
mounting spare wheel rim
size 4
1/2B x 15 H2 (
page 313).
The use of any wheel bolts other than
wheel bolts2 for spare wheel rim
size 4
1/2B x15 H2 can cause physical
damage to the vehicle.
Warning!
G
Be sure to use original lenght wheel bolts
when remounting the original wheel after it
has been repaired.Warning!
G
Inflate spare wheel with collapsible tire only
after the wheel is properly mounted.
Inflate the spare wheel tire using the electric
air pump before lowering the vehicle.


291 Practical hints
Flat tire

Unscrew the alignment bolt, install last
wheel bolt and tighten slightly.Lowering the vehicle

Lower vehicle by turning crank coun-
terclockwise until vehicle is resting ful-
ly on its own weight.

Remove the jack.
1-5 Wheel bolts

Tighten the five wheel bolts evenly, fol-
lowing the diagonal sequence illustrat-
ed (1 to 5), until all bolts are tight.
Observe a tightening torque of 80 ft lb
(110 Nm).
!To avoid paint damage, place wheel flat
against hub and hold it there while in-
stalling first wheel bolt.Warning!
G
Always replace wheel bolts that are dam-
aged or rusted.
Never apply oil or grease to wheel bolts.
Damaged wheel hub threads should be re-
paired immediately. Do not continue to drive
under these circumstances! Contact an au-
thorized Mercedes-Benz Center or call
Roadside Assistance.
Incorrect mounting bolts or improperly
tightened mounting bolts can cause the
wheel to come off. This could cause an acci-
dent. Be sure to use the correct mounting
bolts.
Warning!
G
Use only genuine equipment
Mercedes-Benz wheel bolts. They are identi-
fied by the Mercedes star. Other wheel bolts
may come loose.
Do not tighten the wheel bolts when the ve-
hicle is raised. Otherwise the vehicle could
tip over.


292 Practical hintsFlat tire
Before storing the jack in the trunk, it
should be fully collapsed, with handle
folded in.Inflating the spare tire

Take the electric air pump out of the
trunk.
1Flap
2Air hose with pressure gauge and vent
screw
3Union nut
4Electrical plug
Please exercise appropriate caution

Open flap 1 on air pump.

Pull out electrical plug4 and air hose
with the pressure gauge2.
Observe instructions on air pump label.

Remove the valve cap from valve.

Screw the air hose2 on to the tire
valve.

Insert electrical plug 4 into vehicle cig-
arette lighter socket.

To switch on the air pump turn the key
in the starter switch to position1
(page 31).

Operate air pump until the pressure
gauge displays 36 psi (2.5 bar)
This takes about five minutes for the
space tire. The air hose 2 and the union
nut 3 can become hot during inflation.
Warning!
G
Have the tightening torque checked after
changing a wheel. The wheels could come
loose if they are not tightened to a torque of
80 ft lb (110 Nm).
Warning!
G
Observe instructions on air pump label.


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

Turn off the engine.
On both vehicles:

Turn off all electrical consumers.

Apply parking brake.

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

Connect positive terminal1 of the
charged battery with 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 terminal3 of the
charged battery with under hood
terminal4 in front of the discharged
battery with the jumper cables. Clamp
cable to charged battery3 first.

Start the engine of the disabled vehi-
cle.
After the engine has started, you can again
turn on the electrical consumers. Do not
turn on the lights under any circumstanc-
es.

Remove the jumper cables first from
negative terminals3 and4 and then
from positive terminals1 and2.

Have the battery checked at the
nearest 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 231).
!Vehicles with automatic transmission:
Do not tow-start the vehicle.

311 Technical data
Rims and Tires
Rims and Tires
Use only tires and rims which have been
specifically developed for your vehicle and
tested and approved by Mercedes-Benz.
Other tires and rims can have detrimental
effects, such as

poor handling characteristics


increased noise


increased fuel consumption
Same size tires
!Moreover, tires and rims not approved
by Mercedes-Benz may, under load, ex-
hibit dimensional variations and differ-
ent tire deformation characteristics
that could cause them to come into
contact with the vehicle body or axle
parts. Damage to the tires or the vehi-
cle can be the result.
iFurther information on tires and rims is
available at any authorized Mercedes-
Benz Center. A tire inflation pressure
table is located on the fuel filler cap of
the vehicle. The tire pressure should be
checked regularly and should only be
adjusted on cold tires. Follow tire man-
ufacturer’s maintenance recommenda-
tion included with vehicle.
C230Kompressor
C320
C230Kompressor*
C320*
C230Kompressor
C320
Evolution Package*
Rims (light alloy)
7J x16 H2
7 1/2J x17
7 1/2J x17
Wheel offset
1.46 in (37 mm)
1.46 in (37 mm)
1.46 in (37 mm)
Summer tires (radial-ply tires)
All season tires (radial-ply tires)
205/55 R16 91 H
225/45 R17 91 W
1
225/45 R17 91 W
1
1Must not be used with snow chainsWinter tires (radial-ply tires)
205/55 R16 91 H M+S
225/45 R17 91 H M+S
1
225/45 R17 91 H M+S
1