2005 MERCEDES-BENZ C CLASS COUPE Owners Manual

376 Practical hintsWhere will I find ...?Storing the spare wheel
If you wish to store the spare wheel after
use, carry out the following steps. Other-
wise the spare wheel will not fit the wheel
well.
Unscrew the valve cap from the valve
of the spare wheel.

Carefully push the tip of the valve cap
into the spare wheel valve and allow
the air to escape.

Screw the valve cap back on the valve.

Place spare wheel1 in wheel well.

Turn retaining screw 3 clockwise to
its stop to secure the spare wheel.

Install the trunk floor. Spare wheel bolts
1 Wheel bolt for light alloy rims
2 Wheel bolt for light alloy spare wheel
rim size 4
1/2B x15 H2 For more information on model and spare
wheel rim size, see “Technical data”
section (
page 422).
iIt may take a few minutes for the col-
lapsible tire to deflate completely.
!Wheel bolts
2 must be used when
mounting spare wheel rim
size 4
1/2Bx15 H2 (
page 422).
The use of any wheel bolts other than
wheel bolts 2 for spare wheel rim
size 4
1/2B x15 H2 can cause physical
damage to the vehicle.
Warning!
G
Make sure to use the original length wheel
bolts when remounting the original wheel af-
ter it has been repaired.

377
Practical hints
Unlocking/locking in an emergency
 Unlocking/locking in an emergency
Unlocking the vehicle
If you are unable to unlock the vehicle with
the SmartKey, open the driver’s door using
the mechanical key and the trunk lid using
the emergency release lever.
Removing the mechanical key
1 Mechanical key locking tab
2 Mechanical key
Move locking tab 1 in direction of ar-
row.

Slide the mechanical key 2 out of the
housing. Unlocking the driver’s door
1 Unlocking

Insert the mechanical key into the driv-
er’s door lock until it stops.

Turn the mechanical key counterclock-
wise to position 1.
The driver’s door is unlocked.
iUnlocking the driver’s door with the
mechanical key will trigger the
anti-theft alarm system.
To cancel the alarm, do one of the fol-
lowing:

Press button Œ or ‹ on the
SmartKey.


Insert the SmartKey in the starter
switch.

378 Practical hintsUnlocking/locking in an emergencyUnlocking and opening the trunk lid
A minimum height clearance of 7.1 ft.
(2.16 m) is required to open the trunk lid.
The emergency release is located on the
inside of the trunk lid.1 Cover
2 Emergency release lever
3 Rear bench seat backrest

Fold backrest 3 forward
(page 251).

Remove cover 1 from the trim on the
trunk lid.

Push release lever 2 all the way to the
right.
The trunk lid unlocks.

Lift the trunk lid.!Always make sure there is sufficient
overhead clearance.
iIf the vehicle has previously been
locked from the outside with the
SmartKey, opening the trunk from the
inside using the emergency release le-
ver will trigger the anti-theft alarm sys-
tem*.
To cancel the alarm, do one of the fol-
lowing:

Press button Œ or ‹ on the
SmartKey.


Insert the SmartKey in the starter
switch.

379
Practical hints
Unlocking/locking in an emergency
Locking the vehicle
If you are unable to lock the vehicle with
the SmartKey, do the following:
Close the passenger door and the trunk
lid.

Press the central locking switch in the
center console (
page 98).

Check to see whether the locking knob
on the passenger door have moved
down.

If necessary push them down manually.
Except for the driver's door, the vehicle
should now be locked.
1
Locking

Insert the mechanical key into the
driver’s door lock until it stops.

Turn the mechanical key clockwise to
position 1.
The driver’s door is locked.
Fuel filler flap
In case the central locking system does
not release the fuel filler flap, you can open
it manually.Warning!
G
If you operate the emergency release but-
ton, be careful of the sharp edges so that
you do not injure yourself.

380 Practical hintsUnlocking/locking in an emergencyThe release button is on the right-hand
side of the luggage compartment behind
the side trim.1 Side trim
2 Release button
Open the trunk lid.

Remove the side trim 1 from the
right-hand side of the luggage compart-
ment.

Turn release button 2 clockwise as far
as will go.
The fuel filler flap is released.

Open the fuel filler flap from outside. 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.
Slide out the swiveling cup holder
(page 256).
1 Tool

Insert a tool 1 (e.g. flat blade screw
driver) into the opening.

Perform the following two steps
simultaneously:

Press tool 1 forward in the direc-
tion of the arrow.

Move gear selector lever from
position P.

Remove tool 1 from the opening.iThe gear selector lever is locked again
when moving it to position P.

381
Practical hints
Opening/closing in an emergency
 Opening/closing in an emergency
Panorama roof with power tilt/sliding panel*
You can open or close the tilt/sliding panel
manually should an electrical malfunction
occur.
The tilt/sliding panel drive is located be-
hind the lens of the interior overhead light.
Remove SmartKey from starter switch.

Pry off lens 1 using a flat blade screw-
driver.

Slide both locking tabs 2 in direction
of arrow.

Lower the rear of cover and remove.

Remove the cover.

Take the crank 3 out of the Operator’s
Manual pouch.

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 tilt/sliding panel must be resynchro-
nized after being operated manually
(
page 246).
iDo not disconnect electrical connec-
tors.

382 Practical hintsReplacing SmartKey batteriesIf 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.Warning!
G
Keep the batteries out of reach of children.
If a battery is swallowed, seek medical help
immediately.
iWhen inserting the batteries, make
sure they are clean and free of lint.iWhen changing batteries, always
replace both batteries.
The required replacement batteries are
available at any Mercedes-Benz
Center.

383
Practical hints
Replacing SmartKey batteries
SmartKey
Replacement batteries: Lithium, type
CR 2025 or equivalent.
Remove mechanical key
1
(page 377).
1 Mechanical key
2 Battery compartment

Insert mechanical key 1 in side
opening and push grey slide.
Battery compartment 2 is unlatched.

Pull the battery compartment 2 out of
the key housing in direction of arrow.

Remove the batteries.
3 Battery
4 Contact spring

Using a lint-free cloth, insert new
batteries 3 under contact spring 4
with the plus (+) side facing up.

Return battery compartment into the
housing until it locks in place.

Slide mechanical key 1 back into the
SmartKey.

Check the operation of the SmartKey.