key MERCEDES-BENZ C CLASS COUPE 2005 Owners Manual

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.

393
Practical hints
Replacing wiper blades
 Replacing wiper blades
Removing
Remove SmartKey from starter switch.

Fold wiper arm forward.
1 Unlock
2 Lock

Pull the tab in the direction of arrow 1
and remove windshield wiper.
Installing
Slide the wiper blade into the cutout on
the wiper arm (see arrows).

Slide the tab back in the direction of
arrow 2 until it audibly engages.

Fold the wiper arm back to rest on the
windshield.
Warning!
G
For safety reasons, remove SmartKey from
starter switch before replacing a wiper
blade, otherwise the motor could suddenly
turn on and cause injury.
!Never open the hood when the wiper
arm is folded forward.
Hold onto the wiper when folding the
wiper arm back. If released, the force
of the impact from the tensioning
spring could crack the windshield.
Do not allow the wiper arms to contact
the windshield glass without a wiper
blade inserted.
Make certain that the wiper blades are
properly installed. Improperly installed
wiper blades may cause windshield
damage.
For your convenience, we recommend
that you have this work carried out by
an authorized Mercedes-Benz Center.

394 Practical hintsFlat tire
Preparing the vehicle
Park the vehicle as far as possible from
moving traffic on a hard surface.

Turn on the hazard warning flashers.

Turn the steering wheel so that the
front wheels are in a straight ahead
position.

Move the gear selector lever toP
(manual transmission to first or reverse
gear).

Turn off the engine (
page 58).

Remove the SmartKey from the starter
switch.

Have any passenger exit the vehicle at
a safe distance from the roadway.
Mounting the spare wheel
Preparing the vehicle
Prepare the vehicle as described
(page 394).

Take the wheel wrench and the jack
out of wheel well below the trunk floor
(page 373).

Take the spare wheel out of the trunk
(page 375).
Warning!
G
The dimensions of the spare wheel are dif-
ferent from those of the road wheels. As a
result, the vehicle handling characteristics
change when driving with a spare wheel
mounted. Adapt your driving style accord-
ingly.
The spare wheel is for temporary use only.
When driving with spare wheel mounted, en-
sure proper tire pressure and do not exceed
vehicle speed of 50 mph (80 km/h).
Drive to the nearest Mercedes-Benz Center
as soon as possible to have the spare wheel
replaced with a regular road wheel.
Never operate the vehicle with more than
one spare wheel mounted.

399
Practical hints
Flat tire

Open flap
1 on electric air pump.

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

Remove the valve cap from valve.

Screw air hose 4 onto the tire valve.

Insert electrical plug 3 into vehicle
cigarette lighter socket.

Turn the SmartKey in the starter switch
to position 1.

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

Inflate the spare tire to approximately
36 psi (2.5 bar).
This takes about five minutes for the
spare tire. Air hose 4 and union
nut 5 can become hot during infla-
tion. Exercise proper caution to avoid
burning yourself when using the equip-
ment.

Press 0on electric air pump switch 2.

Turn the SmartKey in the starter switch
to position 0.

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 air
pump back in the trunk.
!Do not operate the electric air pump
longer than six minutes without
interruption. Otherwise it may over-
heat.
You may operate the electric air pump
again after it has cooled off.
Warning!
G
Follow recommended inflation pressures.
Do not overinflate tires. Overinflated 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.

401
Practical hints
Battery
 Battery
The battery is located in the engine com-
partment on the right hand side.
1 Clamps
Removing filter box
Release clamps 1.

Remove filter box.
Installing filter box

Insert filter box properly.

Secure it with clamps 1.
Warning!
G
Failure to follow these instructions can re-
sult in severe injury or death.
Observe all safety instructions and precau-
tions when handling automotive batteries
(page 297).
Never lean over batteries while connecting,
you might get injured.
Battery fluid contains sulfuric acid. Do not
allow this fluid to come in contact with eyes,
skin or clothing. In case it does, immediately
flush affected area with water and seek
medical help if necessary.
A battery will also produce hydrogen gas,
which is flammable and explosive. Keep
flames or sparks away from battery, avoid
improper connection of jumper cables,
smoking, etc.
!Never loosen or detach battery termi-
nal clamps while the engine is running
or the SmartKey is in the starter switch.
Otherwise the alternator and other
electronic components could be se-
verely damaged.
Have the battery checked regularly by
an authorized Mercedes-Benz Center.
Refer to Maintenance Booklet for main-
tenance intervals or contact an autho-
rized Mercedes-Benz Center for further
information.Warning!
G
Do not place metal objects on the battery as
this could result in a short circuit.
Use leak-proof battery only to avoid the risk
of acid burns in the event of an accident.


402 Practical hintsBattery1Negative terminal
2 Positive terminal cover
Disconnecting the battery
Turn off the engine (
page 58).

Turn off all electrical consumers.

Remove SmartKey from starter switch.

Open the hood (
page 291).

Read and observe safety instructions
and precautions (
page 297).

Remove the filter box (
page 401).

Disconnect battery negative lead from
negative terminal 1.

Remove cover 2 from the positive
terminal.

Disconnect the battery positive lead.
Removing the battery
Remove the screw-nuts securing the
battery.

Remove the battery bracket.

Take out the battery.
Charging and reinstalling battery
Charge battery in accordance with the
instructions of the battery charger
manufacturer.

Reinstall the charged battery. Follow
the previously described steps in re-
verse order.
Warning!
G
With a disconnected battery

you will no longer be able to turn the
SmartKey in the starter switch


the gear selector lever will remain
locked in position P


403
Practical hints
Battery
Reconnecting the battery
Turn off all electrical consumers.

Remove SmartKey from the starter
switch.

Connect the positive lead and fasten its
cover
2 (
page 402).

Connect the negative lead.

Reinstall the filter box (
page 401).
Batteries contain materials that can harm
the environment if disposed of improperly.
Large 12-volt storage batteries contain
lead. Recycling of batteries is the preferred
method of disposal. Many states require
sellers of batteries to accept old batteries
for recycling.
Warning!
G
Never charge a battery while still installed in
the vehicle unless the accessory battery
charge unit approved by Mercedes-Benz is
being used. Gases may escape during charg-
ing and cause explosions that may result in
paint damage, corrosion or personal injury.
An accessory battery charge unit specially
adapted for Mercedes-Benz vehicles and
tested and approved by Mercedes-Benz is
available, permitting the charging of the bat-
tery in its installed position. Contact an au-
thorized Mercedes-Benz Center for
information and availability. Charge battery
in accordance with the instructions for the
accessory battery charger.
!NEVER invert the terminal connections!!The battery, its filler caps and the vent
tube must always be securely installed
when the vehicle is in operation.
iThe following procedures must be car-
ried out following any interruption of
battery power (e.g. due to reconnec-
tion):

Set the clock (
page 139) (vehi-
cles with COMAND*: see COMAND
operator’s manual).


Resynchronize side windows
(page 240).


Resynchronize panorama roof with
power tilt/sliding panel*
(page 246).

406 Practical hintsTowing the vehicleMercedes-Benz recommends that the vehi-
cle be transported with all wheels off the
ground using flatbed or appropriate wheel
lift/dolly equipment. This method is pref-
erable to other types of towing.When circumstances do not permit the
recommended towing methods, the vehi-
cle may be towed with all wheels on the
ground or front wheels raised only so far as
necessary to have the vehicle moved to a
safe location where the recommended
towing methods can be employed.
!Use flatbed or wheel lift/dolly equip-
ment with SmartKey in starter switch
turned to position
0.
Do not tow with sling-type equipment.
Towing with sling-type equipment over
bumpy roads will damage radiator and
supports.
To prevent damage during transport,
do not tie down vehicle by its chassis or
suspension parts.
Switch off the tow-away alarm
(page 87) and deactivate the auto-
matic central locking (
page 148).
!Vehicles with automatic transmission:
Do not tow-start the vehicle.
!If the vehicle is towed with the front
axle raised, the engine must be shut off
(SmartKey in starter switch position 0
or 1). Otherwise, the ESP will immedi-
ately be engaged and will apply the rear
wheel brakes.
When towing the vehicle with all wheels
on the ground, the gear selector lever
must be in position N (manual trans-
mission: gears disengaged) and the
SmartKey must be in starter switch
position 2.
When towing the vehicle with all wheels
on the ground or the front axle raised,
the vehicle may be towed only for dis-
tances up to 30 miles (50 km) and at a
speed not to exceed 30 mph
(50 km/h).