2004 MERCEDES-BENZ C CLASS COUPE Owners Manual

289
Practical hints
Unlocking/locking in an emergency
Unlocking the trunk lid
If you are unable to unlock the trunk lid
with the SmartKey, you can use the emer-
gency release on the inside of the trunk lid
to unlock it.
1 Cover
2 Release lever
3 Rear bench seat backrest

Fold backrest 3 forward.

Remove cover 1 from the trim on the
trunk lid.

Push release lever 2 all the way to the
right.

Open the trunk lid.
Locking the vehicle
If you are unable to lock the vehicle with
the SmartKey, lock it with the mechanical
key as follows:
Close the passenger door and the trunk
lid.

Press the central locking switch in the
cockpit (
page 88).

Check to see whether the locking knob
on the passenger door is down. If nec-
essary push it down manually.

Lock the driver’s door with the me-
chanical key.
!The trunk lid swings open upwards au-
tomatically. Always make sure there is
sufficient overhead clearance. A mini-
mum height clearance of 6.92 ft
(2.11 m) is required to open the trunk
lid.

290 Practical hintsUnlocking/locking in an emergencyChanging batteries in the SmartKey
If the batteries in the SmartKey are dis-
charged, the vehicle can no longer be
locked or unlocked. It is recommended to
have the batteries replaced at an autho-
rized Mercedes-Benz Center.
Batteries contain materials that can harm
the environment if disposed of improperly.
Recycling of batteries is the preferred
method of disposal. Many states require
sellers of batteries to accept old batteries
for recycling.1
Mechanical key
2 Battery compartment
Replacement batteries: Lithium, type
CR 2025 or equivalent.

Remove mechanical key 1
(page 288).

Insert mechanical key 1 in side open-
ing and push grey slide.
The battery compartment is unlatched.

Pull the battery compartment out of the
key housing in direction of arrow.
3 Battery
4 Contact spring

Remove the batteries.

Using a lint-free cloth, insert new bat-
teries under the contact spring with the
plus (+) side facing up.
Warning!
G
Keep the batteries out of reach of children.
If a battery is swallowed, seek medical help
immediately.
iWhen changing batteries, always re-
place both batteries.
The required replacement batteries are
available at any Mercedes-Benz
Center.

291
Practical hints
Unlocking/locking in an emergency

Return battery compartment into hous-
ing until it locks in place.

Slide mechanical key
1 back into the
SmartKey.
Fuel filler flap
In case the central locking system does
not release the fuel filler flap, you can open
it manually.
Open the trunk lid.

Fold right-side tail lamp trim aside.

Reach inside through opening 2.

Turn release knob 1 clockwise (ar-
row).
The fuel filler flap can now be opened.
Manually unlocking the gear selector
lever
In the case of power failure the gear selec-
tor lever can be manually unlocked, e.g. to
tow the vehicle.
1 Coin holder
2 Tool

Open the storage compartment in front
of the center armrest.

Release coin holder 1 (e.g. using a
small coin).

Swing coin holder 1 aside.

Insert a tool 2 (e.g. flat blade screw-
driver) into the opening.

Perform the following two steps simul-
taneously:
Push the tool down.

Move gear selector lever from
position P.

Reinstall the coin holder after removing
the tool from the opening.
iWhen inserting the batteries, make
sure they are clean and free of lint.
iThe gear selector lever is locked again
when moving it to position P.

292 Practical hintsOpening/closing in an emergency
Opening/closing in an emergencyPanorama sliding/pop-up roof
You can open or close the panorama slid-
ing/pop-up roof manually should an elec-
trical malfunction occur.
The panorama sliding/pop-up roof drive is
located behind the lens of the interior over-
head light.
Pry off lens 1 using a flat blade screw-
driver.

Slide both locking tabs 2 in direction
of arrow.

Lower rear of cover and remove.

Remove cover.

Obtain crank 3.

Insert crank 3 through hole.

Turn crank 3 clockwise to:

slide roof closed


raise roof at the rear

Turn crank 3 counterclockwise to:

slide roof open


lower roof at the rear
The panorama sliding/pop-up roof must be
resynchronized after being operated man-
ually (page 193).
iDo not disconnect electrical connec-
tors.

293
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 as-
semblies 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 your autho-
rized Mercedes-Benz Center for headlamp
adjustment.
Bulbs Front lamps
iBackup bulbs will be brought into use
when the following lamps malfunction:

Rear fog lamp


Tail lamps


Standing lamps
Lamp
Type
1
Additional turn sig-
nal lamps
LED
2
Turn signal lamp
Halogen headlamp
Turn signal lamp
Bi-Xenon* headlamp
1156A
2357A
3
Halogen headlamps:
Low beam
Bi-Xenon* head-
lamps:
Low and high beam
H7 (55W)
D2S-35W
4
Halogen headlamps:
High beam
Bi-Xenon* head-
lamps:
High beam flasher
H7 (55 W)
H7 (55 W)
Parking and stand-
ing lamp
W 5 W
5
Fog lamp
HB4/9006
(55 W)

294 Practical hintsReplacing bulbsRear lampsNotes on bulb replacement


Use only 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 follow-
ing lamps replaced by an authorized
Mercedes-Benz Center.

Additional turn signals in the exteri-
or rear view mirrors


High mounted brake lamp


Xenon lamps


Front fog lamps
Lamp
Type
6
Side marker lamp
5W5
7
High mounted brake
lamp
LED
8
License plate lamps
C5W
9
Brake lamp
P 21 W
Turn signal lamp
PY21W
Tail, parking stand-
ing and side marker
lamp
P21/5W
Rear fog lamp, driv-
er’s side
P21/4W
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.
Bec a us e o f hi gh vo lt age in xen o n l am ps , i t i s
dangerous to replace the bulb or repair the
lamp and its components. We recommend
that you have such work done by a qualified
technician.

295
Practical hints
Replacing bulbs
Replacing bulbs for front lamps
Halogen headlamps
1 Bulb socket for turn signal lamp
2 Headlamp cover for high beam head-
lamp and for parking and standing
lamp
3 Headlamp cover for low beam head-
lamp 4
Low beam bulb
5 High beam bulb
6 Parking and standing lamp
Low and high beam bulb

Switch off the lights.

Open the hood (
page 236).

Turn headlamp cover 2 or 3 to the
left and remove.

Turn bulb holder with bulb to the left
and pull out.

Pull out the 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 the bulb
holder to the right until it engages.

Replace headlamp cover 2 or 3 and
turn to the right until it engages.
Front turn signal lamp bulb

Switch off the lights.

Open the hood (
page 236).

Turn bulb socket 1 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.

296 Practical hintsReplacing bulbsParking and standing lamp bulb
Switch off the lights.

Open the hood (
page 236).

Turn headlamp cover2 to the left and
remove.

Pull out the bulb socket with the bulb.

Pull the bulb out of the bulb socket.

Insert a new bulb in the socket.

Reinstall the bulb socket.

Replace headlamp cover 2 and turn to
the right until it engages. Bi-Xenon* headlamps
1 Bulb socket for turn signal lamp
2 Cover for high beam flasher, parking
and standing lamp 3
Headlamp cover for Bi-Xenon head-
lamp
4 High beam bulb for high beam flasher
5 Bulb holder
6 Parking and standing lamp
High beam bulb for high beam flasher

Switch off the lights.

Open the hood (
page 236).

Turn headlamp cover 2 to the left and
remove.
iIf the inside of the headlamps is fogged
up, switch the lights on for a sufficient
amount of time.
Warning!
G
Do not remove the cover
3
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.