2008 MERCEDES-BENZ CLK63AMG door lock

368 Operation
Vehicle care
is neither necessary nor recommended by
Mercedes-Benz because of the possibility
of incompatibility between materials used
in the production process and others
applied later.
We have selected car-care products and
compiled recommendations which are
specially matched to our vehicles and
which always reflect the latest technology.
You can obtain Mercedes-Benz approved
car-care products at an authorized
Mercedes-Benz Center.
Scratches, corrosive deposits, corrosion or
damage due to negligent or incorrect care
cannot always be removed or repaired with
the car-care products recommended here.
In such cases it is best to seek aid at an
authorized Mercedes-Benz Center.
The following topics deal with the cleaning
and care of your vehicle and give important
“how-to” information as well as references
to Mercedes-Benz approved car-care
products.Power washer
Tar stains
Quickly remove tar stains before they dry
and become more difficult to remove. A tar
remover is recommended.Paintwork, painted body components
Mercedes-Benz approved Paint Care
should be applied when water drops on the
paint surface do not “bead up”. This should
normally be done every 3 to 5 months,
depending on the climate and washing
detergent used.
Mercedes-Benz approved Paint Cleaner
should be applied if the paint surface
shows signs of embedded dirt (i.e. loss of
gloss).
Do not apply any of these products or wax
if your vehicle is parked in the sun or if the
hood is still hot.
Use the appropriate MB-Touch-Up
Stick for quick and provisional repairs
of minor paint damage (i.e. chips from
stones, vehicle doors, etc.).
!Follow the instructions provided by the
power washer manufacturer on maintaining a
distance between the vehicle and the nozzle of
the power washer.
Never use a round nozzle to power-wash tires.
The intense jet of water can result in damage to
the tire.
Always replace a damaged tire.
Always keep the jet of water moving across the
surface. Do not aim directly at electrical parts,
electrical connectors, seals, or other rubber
parts.
iVehicles with KEYLESS-GO*:
If a door handle is hit by a strong jet of water, and
a SmartKey with KEYLESS-GO* is in close prox-
imity, i.e. within approximately 3 ft
(approximately 1 m), the vehicle could be inad-
vertently locked or unlocked.
!Affixing stickers, magnets, adhesive tape or
similar materials to painted body components
may damage the paintwork.

369 Operation
Vehicle care
Engine cleaning
Prior to cleaning the engine compartment,
make sure to protect electrical
components and connectors from contact
with water and cleaning agents.
Corrosion protection, such as MB Anticor-
rosion Wax, should be applied to the
engine compartment after every engine
cleaning. Before applying, all control
linkage bushings and joints should be
lubricated. The poly-V-belt and all pulleys
should be protected from any wax.
Vehicle washing
In the winter, thoroughly remove all traces
of road salt as soon as possible.
When washing the vehicle underbody, do
not forget to clean the inner sides of the
wheels.Hand-wash
Do not use hot water or wash your vehicle
in direct sunlight.
Only use a mild car wash detergent,
such as Mercedes-Benz approved Car
Shampoo.
Thoroughly spray the vehicle with a
diffused jet of water.
Direct only a very weak spray towards
the ventilation intake.
Use plenty of water and rinse the
sponge and chamois frequently.
Rinse with clean water and thoroughly
dry with a chamois.
Do not allow cleaning agents to dry on
the finish.Automatic car wash
You can have your car washed in an
automatic car wash from the start.
Automatic car washes without brushes are
preferable.
To protect the filter system, switch the
climate control or automatic climate
control to air recirculation mode, see
“Air recirculation” (
page 191) for
climate control or (
page 201) for
automatic climate control.
If the vehicle is very dirty, prewash it
before running it through the automatic
car wash.
iVehicles with KEYLESS-GO*:
If a door handle is hit by a strong jet of water, and
a SmartKey with KEYLESS-GO* is in close
proximity, i.e. within approximately 3 ft
(approximately 1 m), the vehicle could be
inadvertently locked or unlocked.
!Do not use scouring agents on these parts.
Never apply strong force and only use a soft,
non-scratching cloth when cleaning the vehicle.
Do not attempt to wipe the surface with a dry
cloth or sponge.
Otherwise you nay scratch or damage the paint.
!Do not clean your vehicle in an automatic
touchless car wash which uses caustic spray.
Otherwise the caustic spray will damage the
paint, ornamental moldings, or soft top
(CLK cabriolet).

427 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 or KEYLESS-GO*, open the
driver’s door and the trunk using the
mechanical key.
1Mechanical key locking tab
2Mechanical key
Move locking tab1 in the direction of
arrow.
Slide mechanical key2 out of the
housing.Unlocking the driver’s doorInsert the mechanical key2 into the
driver’s door lock until it stops.
Turn the mechanical key2 counter-
clockwise to position1 until the lock-
ing knob moves up.
The driver’s door is unlocked.
Pull the door handle to open the
driver’s door.
iUnlocking and opening the driver’s door
and/or the trunk with the mechanical key will
trigger the anti-theft alarm system.
To cancel the alarm, do one of the following:

Press button Œ or ‹on the
SmartKey.

Insert the SmartKey in the starter switch.
Vehicles with KEYLESS-GO*:

Pull the outside door handle.

Press the KEYLESS-GO* start/stop button
(
page 39).
1Unlocking
2Mechanical key

428 Practical hints
Unlocking/locking in an emergency
Unlocking the trunk
A minimum height clearance of 5.71 ft
(1.74 m) (CLK coupe) or 5.41 ft (1.65 m)
(CLK cabriolet) is required to open the
trunk lid.
The trunk lid lock is located next to the
handle above the rear license plate recess.Insert the mechanical key3 into the
trunk lid lock until it stops.
Turn the mechanical key3
counterclockwise to position1 and
hold it in this position.
Pull the trunk lid handle2 and lift the
trunk lid.
The trunk opens.
Turn the mechanical key3 back and
remove it from the trunk lid lock.
Locking the vehicle
If you cannot lock the vehicle with the
SmartKey or SmartKey with
KEYLESS-GO*, do the following:
Close the passenger door and the
trunk.
Press the central locking switch in the
center console (
page 118).
Check to see whether the locking knob
on the passenger door has moved
down.
If necessary, push it down manually.
Remove the mechanical key out of the
SmartKey (
page 427).
Check whether the trunk is locked.
If necessary, lock the trunk with the
mechanical key (
page 118).
Except for the driver’s door, the vehicle
should now be locked.
1Unlocking in an emergency
2Handle
3Mechanical key
!The trunk lid swings open upwards
automatically. Always make sure there is suffi-
cient overhead clearance.

429 Practical hints
Unlocking/locking in an emergency
Insert the mechanical key2 into the
driver’s door lock until it stops.
Turn the mechanical key2 clockwise
to position1.
The driver’s door is locked.Manually unlocking the gear selector
lever
In case of power failure, the gear selector
lever can be manually unlocked, e.g. to tow
the vehicle.
1Tab
2tool (e.g. flat blade screwdriver)
Pull the tab1 of the covering back in
direction of the center armrest com-
partment.
Insert a tool2 (e.g. flat blade screw-
driver) into the opening.
Perform the following two steps simul-
taneously:
Push tool2 down- and forward in
the direction of the arrow.
Move gear selector lever from
positionP.
Remove the tool2 from the opening.
Push the tab1 of the covering back.
1Locking
2Mechanical key
iThis procedure does not arm the anti-theft
alarm system, nor does it lock the fuel filler flap.
iThe gear selector lever is locked again when
moving it to positionP.

439 Practical hints
Opening/closing in an emergency (Cabriolet)
You and your assistant should press
soft top compartment cover f for-
ward and down with the palms of your
hands until it snaps into place in the
guide. Place your hands on the areas
indicated by the arrows.
At the same time, gently press material
tensioning framee down with the
palms of your hands.
hLocking
Insert hex wrench into soft top locking
mechanism screw.
Turn the soft top locking mechanism
screw with hex wrench counterclock-
wise in direction of arrowh as far as it
will go.
The soft top is locked onto the wind-
shield frame.
Have the soft top operation checked at
an authorized Mercedes-Benz Center
as soon as possible.
Warning!G
Position hands as indicated by arrows so
that when you press soft top compartment
coverf forward and lower material ten-
sioning framee, your hands cannot be-
come trapped.
!Make sure you turn the hex wrench counter-
clockwise as far as it will go. Otherwise the soft
top may not lock properly.
!If, after completing the soft top emergency
operation, the trunk cannot be opened using the
remote trunk lid release switch in the driver’s
door, theŠ button on the SmartKey, or the
trunk lid release handle in the license plate re-
cess, press the soft top compartment cover
down again as described above.
Do not open the trunk with the emergency key,
as this could otherwise damage the trunk lid and
the soft top compartment cover.

465 Practical hints
Battery
2Negative terminal
3Positive terminal cover
Disconnecting the battery
Apply the parking brake (page 59).
Make sure gear selector lever is set to
positionP (
page 174).
Turn off all electrical consumers.
Remove SmartKey from starter switch.
Vehicles with KEYLESS-GO*:
Press the start / stop button until
the engine shuts off.
Open the driver’s door.
Open the hood (page 323).
Remove the filter box (page 464).
Read and observe safety instructions
and precautions (
page 464).
Disconnect the battery negative lead
from negative terminal2.
Remove cover3 from the positive
terminal.
Disconnect the battery positive lead.
Removing the battery
Remove the screw securing the
battery.
Remove the battery support and
bracket.
Pull out the ventilation hose from the
battery (depending on battery arrange-
ment in your vehicle model, the ventila-
tion hose is located either on the left or
right side of the battery).
Take out the battery.
Warning!G
With a disconnected battery

you will no longer be able to turn the
SmartKey in the starter switch and
pressing the KEYLESS-GO* start/stop
button on the gear selector lever will
have no effect

the gear selector lever will remain
locked in positionP
!Always disconnect the battery in the order
described below. Otherwise the vehicle’s elec-
tronics can be damaged.

466 Practical hints
Battery
Charging and reinstalling the battery
Charge battery in accordance with the
instructions of the battery charger
manufacturer.
Reinstall the charged battery. Follow
the previously described steps in
reverse order.
Reconnecting the battery
Turn off all electrical consumers.
Remove SmartKey from starter switch.
Vehicles with KEYLESS-GO*:
Open the driver’s door.
Connect the battery positive lead and
fasten its cover3 (
page 465).
Connect the battery negative lead 2
(
page 465).
Reinstall the filter box (page 464).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 separate instruc-
tions for the accessory battery charger.
!The battery, its filler caps and the ventilation
hose must always be securely installed when the
vehicle is in operation.
!Always connect the battery in the order
described below. Otherwise the vehicle’s
electronics can be damaged.
!Never invert the terminal connections!
iThe following procedures must be carried
out following any interruption of battery power
(e.g. due to reconnecting):

Set the clock (page 160). Vehicles with
COMAND*: see COMAND operator’s manu-
al.

Synchronize the side windows
(
page 252).

Synchronize the tilt/sliding sunroof* (CLK
coupe) (
page 258).