2005 MERCEDES-BENZ C320 warning light

298 OperationVehicle careWiper blades
Fold wiper arms forward.

Clean the wiper blade inserts with a
clean cloth and detergent solution.Window cleaning

Fold wiper arms forward.

Use a window cleaning solution on all
glass surfaces.
An automotive glass cleaner is
recommended.Light alloy wheels
Mercedes-Benz approved Wheel Care
should be used for regular cleaning of the
light alloy wheels.
If possible, clean wheels once a week with
Mercedes-Benz approved Wheel Care,
using a soft bristle brush and a strong
spray of water.
Follow the instructions on container.
Instrument cluster
Use a gentle dishwashing detergent or
mild detergent for delicate fabrics as a
washing solution. Wipe with a cloth moist-
ened in lukewarm solution. Do not use
scouring agents.
Warning!
G
For safety reasons, switch off wipers and
remove SmartKey from starter switch
before cleaning the wiper blades, otherwise
the wiper motor might suddenly turn on and
cause injury.!Fold the windshield wiper arms back
onto the windshield before turning the
SmartKey in the starter switch.
Hold on to the wiper when folding the
wiper arm back. If released, the force
of the impact from the tensioning
spring could crack the windshield.
Warning!
G
For safety reasons, switch off wipers and
remove SmartKey from starter switch
before cleaning the windshield, otherwise
the wiper motor might suddenly turn on and
cause injury.!Fold the windshield wiper arms back
onto the windshield before turning the
SmartKey in the starter switch.
Hold on to the wiper when folding the
wiper arm back. If released, the force
of the impact from the tensioning
spring could crack the windshield.
iOnly use acid-free cleaning materials.
Acid may cause corrosion or damage
the clear coat.

299 Operation
Vehicle care
Steering wheel and gear selector lever
Wipe with a damp cloth and dry thoroughly
or clean with Mercedes-Benz approved
Leather Care.
Cup holders
Use a gentle dishwashing detergent or
mild detergent for delicate fabrics as a
washing solution. Wipe with a cloth moist-
ened in lukewarm solution. Do not use
scouring agents.
Hard plastic trim items
Pour Mercedes-Benz approved Interior
Care onto soft lint-free cloth and apply
with light pressure.Headliner and rear window shelf
Clean with soft bristle brush, or use a
dry-shampoo cleaner in case of excessive
dirt.
Seat belts
The webbing must not be treated with
chemical cleaning agents. Only use clear,
lukewarm water and soap. Do not dry the
webbing at temperatures above 176°F
(80°C) or in direct sunlight.Upholstery
Using aftermarket seat covers or wearing
clothing that have the tendency to give off
coloring (e.g. when wet, etc.) may cause
the upholstery to become permanently dis-
colored. By lining the seats with a proper
intermediate cover, contact-discoloration
will be prevented.
Leather upholstery
Wipe leather upholstery with a damp cloth
and dry thoroughly or clean with
Mercedes-Benz approved Leather Care.
Exercise particular care when cleaning
perforated leather as its underside should
not become wet.
Warning!
G
Do not bleach or dye seat belts as this may
severely weaken them. In a crash they may
not be able to provide adequate protection.

336 Practical hintsWhere will I find ...?In the case of a flat tire, you may
temporarily use the collapsible tire when
observing the following restrictions:

Do not exceed a vehicle speed of
50 mph (80 km/h).


Drive to the nearest tire repair facility
to have the flat tire repaired or
replaced as appropriate.


Do not operate vehicle with more than
one collapsible tire mounted.
For more information, see “Rims and Tires”
(
page 380).
Spare wheel bolts
1Wheel bolt for light alloy rims
2Wheel bolt for Minispare wheel,
collapsible tire, or other steel rims
(located in trunk with spare wheel)
!Wheel bolts2 must be used when
mounting the Minispare wheel,
collapsible tire, or other steel rims. The
use of any wheel bolts other than wheel
bolts2 for the Minispare wheel,
collapsible tire, or other steel rims will
physically damage the vehicle’s
brakes. Warning!
G
Make sure to use the original length wheel
bolts when remounting the original wheel
after it has been repaired.

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.

356 Practical hintsFlat tireMounting the spare wheel
1Wheel bolt for light alloy rims
2Wheel bolt for Minispare wheel,
collapsible tire, or other steel rims
(located in trunk with spare wheel)

Clean contact surfaces of wheel and
wheel hub.

Guide spare wheel onto the alignment
bolt and push it on.

Insert wheel bolts and tighten them
slightly.
!Wheel bolts2 must be used when
mounting the Minispare wheel,
collapsible tire, or other steel rims. The
use of any wheel bolts other than wheel
bolts2 for the Minispare wheel,
collapsible tire, or other steel rims will
physically damage the vehicle’s
brakes.
!To avoid paint damage, place wheel flat
against hub and hold it there while
installing first wheel bolt.Warning!
G
Always replace wheel bolts that are
damaged or rusted.
Never apply oil or grease to wheel bolts.
Damaged wheel hub threads should be
repaired immediately. Do not continue to
drive under these circumstances! Contact
an authorized Mercedes-Benz Center or call
Roadside Assistance.
Incorrect wheel bolts or improperly tight-
ened wheel bolts can cause the wheel to
come off. This could cause an accident.
Make sure to use the correct wheel bolts.

357 Practical hints
Flat tire

Unscrew the alignment bolt, install last
wheel bolt and tighten slightly.Inflating the collapsible tire
(C 55 AMG only)

Take the electric air pump out of the
trunk (
page 331).
1Flap
2On/off switch
3Electrical plug
4Air hose with pressure gauge and vent
screw
5Union nut

Open flap 1 on electric air pump.

Pull out electrical plug 3 and air hose
with pressure gauge 4.

Remove the valve cap from the
collapsible tire valve.
Warning!
G
Only use genuine equipment
Mercedes-Benz wheel bolts. Other wheel
bolts may come loose.
Do not tighten the wheel bolts when the
vehicle is raised. Otherwise the vehicle
could fall of the jack.
Warning!
G
Vehicles with collapsible tire
(C 55 AMG only):
Inflate collapsible tire only after the wheel is
properly mounted.
Inflate the collapsible tire using the electric
pump (
page 357) before
lowering the
vehicle.
Warning!
G
Observe instructions on air pump label.!Do not lower the vehicle before
inflating the collapsible tire. Otherwise
the rim may be damaged.


358 Practical hintsFlat tire
Screw air hose 4 onto the collapsible
tire valve.

Insert electrical plug 3 into vehicle
cigarette lighter socket.

Turn the SmartKey in the starter switch
to position1.

Press I on electric air pump switch 2.
The electric air pump should now
switch on and inflate the collapsible
tire.

Inflate the tire to approximately 36 psi
(2.5 bar).
This takes about five minutes for the
collapsible tire. Air hose 4 and union
nut5 can become hot duration infla-
tion. Exercise proper caution to avoid
burning yourself when using the equip-
ment.

Press 0 on electric air pump switch 2.

Turn the SmartKey in the starter switch
to position0.

If the tire pressure is above 36 psi
(2.5 bar), release excess tire pressure
using the vent screw.

Detach the electric air pump.

Store the electrical plug and the air
hose behind the flap and place the
electric air pump back in the trunk.
!Do not operate the electric air pump
longer than six minutes without inter-
ruption. Otherwise it may overheat.
You may operate the electric air pump
again after it has cooled off.
Warning!
G
Follow recommend inflation pressures.
Do not overinflate tires. Overinflating tires
can result in sudden deflation (blowout) be-
cause they are more likely to become punc-
tured or damaged by road debris, potholes,
etc.
Do not underinflate tires. Underinflated tires
wear unevenly, adversely affect handling
and fuel economy, and are more likely to fail
from being overheated.


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.