2008 MERCEDES-BENZ CLS63AMG keyless

335 Operation
Vehicle care
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, de-
pending on the climate and washing deter-
gent 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.).Engine cleaning
Prior to cleaning the engine compartment,
make sure to protect electrical compo-
nents and connectors from contact with
water and cleaning agents.
Corrosion protection, such as MB Anticor-
rosion Wax, should be applied to the en-
gine compartment after every engine
cleaning. Before applying, all control link-
age bushings and joints should be lubricat-
ed. 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.
!Affixing stickers, magnets, adhesive tape or
similar materials to painted body components
may damage the paintwork.
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 (approxi-
mately 1 m), the vehicle could be inadvertently
locked or unlocked.

338 Operation
Vehicle care
Cleaning the windows and the wiper
blades
Make sure the hood is fully closed.
Switch on the ignition (page 38).
Turn combination switch to wiper
settingu (
page 56).
With wiper arms in vertical position,
switch off the ignition (
page 60).Fold the wiper arms forward until they
snap into place.
Clean the wiper blade inserts with a
clean cloth and detergent solution.
Use a soft, clean cloth and a mild win-
dow cleaning solution on all outside
and inside glass surfaces.
An automotive glass cleaner is recom-
mended.
!Do not apply strong pressure to the sensor
covers. Applying strong pressure may damage
the sensor covers.
Follow the instructions provided by the power
washer manufacturer on maintaining a distance
between the vehicle and the nozzle of the power
washer.
!To prevent scratches, never apply strong
force and only use a soft, non-scratching cloth
when cleaning the sensors. Do not attempt to
wipe dirty sensors with a dry cloth or sponge.
!The windshield wipers must be in a vertical
position before folding them away from the wind-
shield. They could otherwise damage the hood.
Never open the hood when the wiper arms are
folded forward.
Warning!G
For safety reasons, switch off wipers and re-
move SmartKey from starter switch (vehi-
cles with KEYLESS-GO*: Make sure the
vehicle’s on-board electronics have
status0) before cleaning the windshield
and/or the wiper blades. Otherwise, the
wiper motor could suddenly turn on and
cause injury.
!Do not pull on the wiper blade inserts. They
could tear.

339 Operation
Vehicle care
Light alloy wheels
If possible, clean wheels once a week.
Use Mercedes-Benz approved Wheel
Care, a soft bristle brush and a strong
spray of water for cleaning the light al-
loy wheels.Plastic and rubber parts
Use a gentle dishwashing detergent or
mild detergent for delicate fabrics as a
washing solution.
Wipe with a cloth moistened in a luke-
warm solution.
The surface may temporarily change
color. If this is the case, wait for it to
dry.
!Fold the windshield wiper arms back onto
the windshield before turning the SmartKey in
the starter switch or pressing the KEYLESS-GO
start/stop button (vehicles with KEYLESS-GO*).
Hold on to the wiper when folding the wiper arm
back. If released, the force of the impact from
the tensioning spring could crack the windshield.
!To clean the window interior, do not use a
dry cloth, abrasives, solvents or cleaners con-
taining solvents. Do not touch the inside of the
front, rear or side windows with hard objects
such as an ice scraper or ring. Doing so may
damage the windows.!Only use acid-free cleaning materials. Acid
may cause corrosion or damage the clear coat.
!The vehicle should not be parked for an ex-
tended period of time immediately after it has
been cleaned, especially not after the wheel rims
have been cleaned with wheel rim cleaner.
Wheel rim cleaners can lead to increased corro-
sion of the brake disks and brake pads.
Non-approved wheel cleaners may also damage
the wheel paint if the car is not driven after
cleaning. Therefore, the vehicle’s brake system
should always be warmed-up before it is parked
after cleaning. To do so, please drive your vehicle
for several minutes to allow the brakes to dry.
When applying Mercedes-Benz approved Tire
Care and Mercedes-Benz approved Wheel Care
products, take care not to spray them on the
brake disks.
Warning!G
Do not use cleaners or cockpit care sprays
containing solvents to clean the cockpit or
the steering wheel. Cleaners containing sol-
vents will make the surface porous and vehi-
cle occupants could suffer serious injuries
from plastic parts coming loose in the event
of air bag deployment.

368 Practical hints
What to do if …
Display messagePossible cause/consequencePossible solution
PGear Selector Lever
In P PositionYou have tried to start the engine
with the KEYLESS-GO* start/stop
button with the gear selector lever
not in positionP.Place the gear selector lever in positionP.
You have tried to turn off the engine
with the KEYLESS-GO* start/stop
button with the gear selector lever
not in positionP.
P/NPlease Shift To
N or PYou have tried to start the engine
with the KEYLESS-GO* start/stop
button while the gear selector lever
was in positionR orD.Place the gear selector lever in positionP
orN. Make sure the brake pedal is depressed.
PRE-SAFEInoperative
See Operator’s ManualPRE-SAFE® itself has failed. All other
occupant safety systems, such as
the air bags, are still available.Contact an authorized Mercedes-Benz Center
as soon as possible.
If ESP® and PRE-SAFE® malfunction
messages are displayed simulta-
neously, PRE-SAFE
® has been deac-
tivated as a result of these
malfunctions. All other occupant
safety systems, such as the air bags,
are still available.

380 Practical hints
What to do if …
Display symbolDisplay messagePossible cause/consequencePossible solution
A Reserve FuelThe fuel level has dropped below the re-
serve mark.Refuel at the next gas station
(
page 283).
Gas 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 283).
If it is not closed properly:
Close the fuel cap.
If it is closed properly:
Have the fuel system checked by an au-
thorized Mercedes-Benz Center.
»Replace
Air FilterThe air cleaner is clogged.Have the air cleaner checked by an au-
thorized Mercedes-Benz Center.
FRemove KeyYou have forgotten to remove the
SmartKey.Remove the SmartKey from the starter
switch.
Please
get a new key.The SmartKey is malfunctioning.Contact an authorized Mercedes-Benz
Center.
Key Detected
In VehicleA SmartKey with KEYLESS-GO* left in the
vehicle was recognized while locking the
vehicle from the outside.Take the SmartKey with KEYLESS-GO*
out of the vehicle.

381 Practical hints
What to do if …
Display symbolDisplay messagePossible cause/consequencePossible solution
FPlease don’t
forget your key.This display appears (for a maximum of
60 seconds) if the driver’s door is opened
with the engine turned off and no
SmartKey in the starter switch.
This message is only a reminder.Take the SmartKey or SmartKey with
KEYLESS-GO* with you when leaving
the vehicle.
Change
Key BatteriesThe SmartKey with KEYLESS-GO* batter-
ies are discharged.Replace the batteries (page 402).
Key
Not DetectedThe SmartKey with KEYLESS-GO* is not
recognized while the engine is running
because

the SmartKey with KEYLESS-GO* is
not in the vehicle

there is strong radio-frequency inter-
ference
Stop the vehicle as soon as it is safe to
do so.
Search for the SmartKey.
Otherwise the vehicle cannot be cen-
trally locked nor can the engine be
started again after the engine is
stopped.
Key
Not DetectedThe SmartKey with KEYLESS-GO* is mo-
mentarily not recognized.Change the position of the SmartKey in
the vehicle.
Operate the vehicle with the SmartKey
in the starter switch if necessary.

386 Practical hints
What to do if …
Display symbolDisplay messagePossible cause/consequencePossible solution
.Rear Left FoglampThe left rear fog lamp is malfunctioning. Contact an authorized
Mercedes-Benz Center as soon as
possible.
Rear Right FoglampThe right rear fog lamp is malfunctioning. Contact an authorized
Mercedes-Benz Center as soon as
possible.
Switch Off LightsYou have removed the SmartKey from the
starter switch, opened the driver’s door and
left the headlamps on or removed the
SmartKey with KEYLESS-GO* from the vehi-
cle and left the headlamps on.Switch off the headlamps.
Switch Off Lights
Or
Remove KeyThe exterior lamp switch is set toU and
you have forgotten to take out the SmartKey.
The parking lamps remain switched on.Switch off the headlamps
(
page 126).
or
Remove the SmartKey from the start-
er switch.
Tail Lamp
Left
Auxiliary Bulb OnThe left tail lamp is malfunctioning. An auxilia-
ry bulb is being used.Contact an authorized
Mercedes-Benz Center as soon as
possible.
Tail Lamp
Right
Auxiliary Bulb OnThe right tail lamp is malfunctioning. An auxil-
iary bulb is being used.Contact an authorized
Mercedes-Benz Center as soon as
possible.

398 Practical hints
Unlocking/locking in an emergency
Unlocking the vehicle
If you cannot unlock the vehicle with the
SmartKey or KEYLESS-GO*, unlock the
driver’s door and the trunk using the me-
chanical key. Removing the mechanical key
1Mechanical key locking tab
2Mechanical key
Move locking tab1 in direction of ar-
row.
Slide mechanical key2 out of the
housing.Unlocking the driver’s door
Insert mechanical key2 into the driv-
er’s door lock until it stops.
Turn mechanical key2 counterclock-
wise to position1 until the locking
knob moves up.
The driver’s door is unlocked.
Pull the door handle to open the driv-
er’s door.
iUnlocking your vehicle with the mechanical
key and opening the driver’s door or the trunk
will trigger the anti-theft alarm system.
To cancel the alarm, insert the SmartKey or
SmartKey with KEYLESS-GO* in the starter
switch.
1Unlocking
2Mechanical key