2007 MERCEDES-BENZ C280 light

349 Practical hints
What to do if …
Display symbolDisplay messagePossible cause/consequencePossible solution
4Gas cap
is openA loss of pressure has been detected in
the fuel system. The fuel cap may not be
closed properly or the fuel system may be
leaky.Check the fuel cap (page 271).
If it is not closed properly:
Close the fuel cap.
If it is closed properly:
Have the fuel system checked by an
authorized Mercedes-Benz Center.
IRemove keyYou have forgotten to remove the
SmartKey.Remove the SmartKey from the starter
switch.
Get a new
keyNo additional code available for
SmartKey.Change the SmartKey.
.3rd brake
lampThe high mounted brake lamp is
malfunctioning.Contact an authorized Mercedes-Benz
Center as soon as possible.
AUTO-Light
inoperativeThe light sensor is malfunctioning.
The headlamps switch on automatically.In the control system, set lamp opera-
tion to manual mode (
page 139).
Switch on the headlamps using the
exterior lamp switch.
Contact an authorized Mercedes-Benz
Center as soon as possible.

352 Practical hints
What to do if …
Display symbolDisplay messagePossible cause/consequencePossible solution
.Rear
fog lamp
Auxiliary bulb
onThe rear fog lamp is malfunctioning.
A substitute bulb is being used.Replace the bulb as soon as possible
(
page 373).
Reverse
lamp
leftThe left backup lamp is malfunctioning.Replace the bulb as soon as possible
(
page 373).
Reverse
lamp
rightThe right backup lamp is malfunctioning.Replace the bulb as soon as possible
(
page 373).
Switch off
lightsYou have removed the SmartKey from the
starter switch, opened the driver’s door
and left the headlamps on.Switch off the headlamps.
Tail lamp
left
Auxiliary bulb
on

The left tail lamp is malfunctioning.
A substitute bulb is being used.Replace the bulb as soon as possible
(
page 373).
Tail lamp
right
Auxiliary bulb
on

The right tail lamp is malfunctioning.
A substitute bulb is being used.Replace the bulb as soon as possible
(
page 373).

360 Practical hints
Where will I find ...?
Storing the Minispare wheel
Place Minispare wheel3 in wheel
well.
Place vehicle tool kit storage well
casing4 over the Minispare wheel.
Make sure arrow2 on vehicle tool kit
storage well casing4 points in the
direction of travel.
Place storage well casing (page 356)
over vehicle tool kit storage well
casing4 and turn the retaining screw
(
page 356) clockwise as far it will go
to secure the Minispare wheel.In case of a flat tire, you may temporarily
use the Minispare wheel 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 Minispare wheel mounted.
For more information, see “Rims and Tires”
(
page 403).
Spare wheel bolts
1Wheel bolt for light alloy rims
2Wheel bolt for Minispare wheel (locat-
ed in trunk with spare wheel)
iArrow2 on vehicle tool kit storage well
casing4 must point in the direction of travel.
Otherwise you cannot place the storage well cas-
ing (
page 356) on top and secure the Minis-
pare wheel with the retaining screw
(
page 356).
!To prevent damage, always disengage trunk
floor handle from upper edge of trunk and lower
trunk floor before closing the trunk lid.
Warning!G
The dimensions of the Minispare wheel are
different from those of the road wheels. As
a result, the vehicle handling characteristics
change when driving with a Minispare wheel
mounted.
The Minispare wheel should only be used
temporarily, and should be replaced with a
regular road wheel as quickly as possible.
!Wheel bolts2 must be used when mount-
ing the Minispare wheel. The use of any wheel
bolts other than wheel bolts2 for the Minispare
wheel 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.

364 Practical hints
Opening/closing in an emergency
Power tilt/sliding sunroof*
You can open or close the tilt/sliding
sunroof manually should an electrical
malfunction occur.
The tilt/sliding sunroof drive is located
behind the lens1 of the interior overhead
light.
1Lens
Remove SmartKey from the starter
switch.
Pry off lens1 using a flat blade
screwdriver.2Locking tabs
Slide both locking tabs2 in direction
of the arrows.
Lower the rear of the cover.
Remove the cover.
Take the crank3 out of the Mer-
cedes-Benz vehicle literature pouch.3Crank
Insert crank3 through hole on the left
side.
Turn crank3 clockwise to:

slide sunroof closed

raise sunroof at the rear
Turn crank3 counterclockwise to:

slide sunroof open

lower sunroof at the rear
iDo not disconnect electrical connectors.
iTurn crank3 slowly and smoothly.
The tilt/sliding sunroof must be synchronized af-
ter being operated manually (
page 226).

367 Practical hints
Replacing bulbs
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.
iSubstitute bulbs will be brought into use
when lamps malfunction. Read and observe the
messages in the multifunction display
(
page 349).

369 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 by an authorized
Mercedes-Benz Center:

Additional turn signals in the exterior
rear view mirrors

High mounted brake lamp

Xenon* lamps

Front fog lamps

Front side marker 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.
!Do not replace the LEDs yourself. You could
otherwise damage the LEDs or parts of the
vehicle. Only have the LEDs replaced by an
authorized Mercedes-Benz Center.

380 Practical hints
Flat tire
Mounting the spare wheel
1Wheel bolt for light alloy rims
2Wheel bolt for Minispare wheel (locat-
ed 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 mount-
ing the Minispare wheel. The use of any wheel
bolts other than wheel bolts2 for the Minispare
wheel 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.

381 Practical hints
Flat tire
Unscrew the alignment bolt, install last
wheel bolt and tighten slightly.Lowering the vehicle
Lower vehicle by turning crank
counterclockwise until vehicle is
resting fully on its own weight.
Remove the jack.
1 - 5Wheel bolts
Tighten the five wheel bolts evenly,
following the diagonal sequence
illustrated (1to5), until all bolts are
tight. Observe a tightening torque
of 80 lb-ft (110 Nm).Before storing the jack, it should be fully
collapsed, with handle folded in (storage
position) (
page 358).
Store the jack and the other vehicle
tools in the trunk.
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 off the jack.
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 lb-ft (110 Nm).