2009 MERCEDES-BENZ CL COUPE lock
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Display messages
Possible causes/consequences and
X
X Solutions !
The warning lamp (yellow) lights up. In addition, the
indicator lamp (red) flashes for about 10 seconds after the
electric parking brake has been engaged or released. It then
goes out or remains lit.
The electric parking brake has overheated.
X Allow the vehicle to cool down. Do not engage or release
the electric parking brake during this time.
X Prevent the vehicle from rolling away before you leave it
(Y page 204).
X When the vehicle has cooled down: switch the ignition off
and on again, then engage or release the electric parking. ! Parking
brake
inopera‐
tive !
The warning lamp (yellow) lights up. In addition, the
indicator lamp (red) flashes for about 10 seconds after the
electric parking brake has been engaged or released. It then
goes out or remains lit.
The electric parking brake is malfunctioning.
X Switch the ignition off and on, and then engage the electric
parking brake.
If it is not possible to engage the electric parking brake:
X Shift the transmission to P.
X Use the folding wheel chock (Y page 315) from the vehicle
tool kit to secure the vehicle against rolling away.
X Visit a qualified specialist workshop. ! Turn on
the igni‐
tion to
release
the park‐
ing brake !
The indicator lamp (red) flashes.
You attempted to release the electric parking brake while the
ignition was switched off.
X Key: turn the key to position 1in the ignition lock.
X KEYLESS GO*: switch on the ignition. Display
messages
337Practical advice
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Page 341 of 421
Display messages
Possible causes/consequences and
X
X Solutions ¨ Stop vehi‐
cle Vehi‐
cle too
low
G
Risk of accident
The vehicle level control system* is malfunctioning.
X Do not exceed a maximum speed of 80 km/h.
X Make only slight steering movements. Otherwise, the front
wing or the tyres could be damaged when you drive on.
X Listen for scraping sounds.
X Pull over and stop the vehicle, paying attention to road and
traffic conditions, and select a higher vehicle level.
The vehicle may be raised, depending on the type of mal-
function.
X Visit a qualified specialist workshop. The vehicle level is too low.
X
Pull over and stop the vehicle safely, paying attention to
road and traffic conditions.
After a few seconds, the vehicle level is adjusted and the
display message disappears. ¨ Vehicle
rising
Please
wait
briefly The vehicle level is too low when the vehicle is stationary.
X
Remain stationary.
X Wait until the display message disappears.
The vehicle has reached the level required for driving. ¨ Malfunc‐
tion
G
Risk of accident
The AIRMATIC* function is restricted. The vehicle's handling
characteristics may be affected.
X Do not exceed a maximum speed of 80 km/h.
X Visit a qualified specialist workshop. 6 Restraint
system
malfunc‐
tion Con‐
sult work‐
shop
G
Risk of injury
The restraint system is faulty.
X Visit a qualified specialist workshop. 338
Display
messagesPractical advice
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Page 342 of 421
Display messages
Possible causes/consequences and
X
X Solutions 6 Front
left-hand
side mal‐
function
Consult
workshop
or
Front
right-
hand side
malfunc‐
tion Con‐
sult work‐
shop
G
Risk of injury
The front left-hand or right-hand restraint system has mal-
functioned.
X Visit a qualified specialist workshop. 6 Rear left-
hand side
malfunc‐
tion Con‐
sult work‐
shop
or
Rear
right-
hand side
malfunc‐
tion Con‐
sult work‐
shop
G
Risk of injury
The rear left-hand or right-hand restraint system has mal-
functioned.
X Visit a qualified specialist workshop. 6 Rear
centre
malfunc‐
tion Con‐
sult work‐
shop
G
Risk of injury
The rear centre restraint system has malfunctioned.
X Visit a qualified specialist workshop. Display
messages
339Practical advice
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Page 343 of 421
Display messages
Possible causes/consequences and
X
X Solutions 6 Left
windowbag
malfunc‐
tion Con‐
sult work‐
shop
or
Right
windowbag
malfunc‐
tion Con‐
sult work‐
shop
G
Risk of injury
There is a malfunction in the left-hand or right-hand window-
bag.
X Visit a qualified specialist workshop. Â Key does
not
belong to
vehicle You have put the wrong key in the ignition lock.
X
Use the correct key. Â Change
key bat‐
teries The key batteries are discharged.
X
Change the batteries (Y page 367). Replace
key
The KEYLESS GO* key needs to be replaced.
X
Visit a qualified specialist workshop. Â Key being
initial‐
ised
Please
wait
The vehicle is registering the KEYLESS GO* key.
X
Wait until the display message disappears. Â Remove
starting
button,
then
insert key
KEYLESS GO* is temporarily malfunctioning or is defective.
X
Remove the KEYLESS GO* button from the ignition lock
(Y page 183).
X Insert the key into the ignition lock and turn it to the desired
position. Â Key still
in vehicle
The KEYLESS GO key* has been detected inside the vehicle
during locking.
X
Remove the KEYLESS GO key* from the vehicle. 340
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Page 344 of 421
Display messages
Possible causes/consequences and
X
X Solutions  Key not
detected
(white dis-
play mes-
sage) You want to unlock or lock the vehicle and the KEYLESS GO
key* cannot be currently detected by the vehicle.
X
Locate the KEYLESS GO key*.
If the KEYLESS GO key* is still not detected:
X Lock or unlock the vehicle using the key. You are in the vehicle and the KEYLESS GO key* currently
cannot be detected by the vehicle.
X
Change the location of the key with the KEYLESS GO func-
tion* in the vehicle.
If the KEYLESS GO key* is still not detected:
X Remove the KEYLESS GO* button from the ignition lock
(Y page 183).
X Insert the key into the ignition lock and turn it to the desired
position. Â Key not
detected
(red display
message)
The KEYLESS GO key* is not in the vehicle.
If you switch off the engine, you can no longer centrally lock
the vehicle and no longer start the engine.
X
Pull over and stop the vehicle safely as soon as possible,
paying attention to road and traffic conditions.
X Locate the KEYLESS GO key*. The KEYLESS GO key* is not detected while driving because
a powerful radio transmitter is causing interference.
X
Pull over and stop the vehicle safely as soon as possible,
paying attention to road and traffic conditions.
X Remove the KEYLESS GO* button from the ignition lock
(Y page 183).
X Insert the key into the ignition lock and turn it to the desired
position. The KEYLESS GO* key is not detected by the vehicle.
X
Change the location of the key with the KEYLESS GO func-
tion* in the vehicle.
If the KEYLESS GO key* is still not detected:
X Remove the KEYLESS GO* button from the ignition lock
(Y page 183).
X Insert the key into the ignition lock and turn it to the desired
position. Display
messages
341Practical advice
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Page 345 of 421
Display messages
Possible causes/consequences and
X
X Solutions  Close
doors to
lock vehi‐
cle At least one door is open.
X
Close all doors and lock the vehicle again. & inopera‐
tive Bat‐
tery low The on-board voltage is too low. The auxiliary heating/venti-
lation* has switched off or cannot be switched on.
X
Drive for a longer distance.
The battery is being charged. The auxiliary heating/venti-
lation *can be reactivated as soon as there is sufficient on-
board voltage. & inopera‐
tive
Refuel
vehicle The fuel level in the fuel tank is too low. The auxiliary heat-
ing* cannot be switched on.
X
Refuel at the nearest filling station. & inopera‐
tive See
Owner's
Manual
The auxiliary heating
*is temporarily malfunctioning or is
defective.
X When the vehicle is on a level surface and the engine has
cooled down, make up to four attempts to switch on the
auxiliary heating*, waiting several minutes between each
attempt.
X If the auxiliary heating* does not switch on, visit a qualified
specialist workshop. + Top up
coolant
See Own‐
er's Man‐
ual The coolant level is too low.
X
Top up the coolant, observing the warning notes before
doing so (Y page 294).
X Have the engine cooling system checked at a qualified spe-
cialist workshop if the coolant needs topping up more often
than usual. ? Coolant
Stop vehi‐
cle Turn
engine off The coolant is too hot.
X
Pull over and stop the vehicle safely and switch off the
engine, paying attention to road and traffic conditions.
X Make sure that the air supply to the radiator is not blocked,
e.g. by slush.
X Wait until the display message disappears before restarting
the engine. Otherwise, there is a risk of engine damage.
X Observe the coolant temperature gauge. 342
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Page 346 of 421
Display messages
Possible causes/consequences and
X
X Solutions The poly-V-belt may have torn.
X
Stop immediately and safely when traffic conditions permit
and check the poly-V-belt.
If the poly-V-belt is torn:
X Do not drive on. Consult a qualified specialist workshop.
If the poly-V-belt is intact:
X Wait until the display message disappears before restarting
the engine. Otherwise, there is a risk of engine damage.
X Observe the coolant temperature gauge.
X Have the vehicle checked at a qualified specialist work-
shop. b Third
brake lamp The third brake lamp is faulty. The display message will only
appear if all LEDs have failed.
X
Visit a qualified specialist workshop. b Left-hand
cornering
light
or
Right-
hand cor‐
nering
light The left-hand or right-hand cornering lamp is faulty.
X
Change the bulb (Y page 369). b Left-hand
dipped
beam
or
Right-
hand
dipped
beam The left-hand or right-hand dipped-beam headlamp is faulty.
X
Visit a qualified specialist workshop. b Active
Light
Function
inopera‐
tive
The active light function* is faulty.
X
Visit a qualified specialist workshop. Display
messages
343Practical advice
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Page 347 of 421
Display messages
Possible causes/consequences and
X
X Solutions b AUTO
lights
inopera‐
tive The light sensor is faulty. Daytime driving lights are switched
on.
X
Switch off the daytime driving lights in the on-board com-
puter (Y page 225).
X Switch the lighting on or off using the light switch.
X Visit a qualified specialist workshop. b Rear left-
hand turn
signal
or
Rear
right-
hand turn
signal The rear left-hand or right-hand turn signal is faulty.
X
Visit a qualified specialist workshop. b Turn sig‐
nal in
left-hand
exterior
mirror
or
Turn sig‐
nal in
right-
hand exte‐
rior mir‐
ror The left-hand or right-hand turn signal on the exterior mirror
is faulty. The display message will only appear if all LEDs have
failed.
X
Visit a qualified specialist workshop. b Front
left-hand
turn sig‐
nal
or
Front
right-
hand turn
signal The front left-hand or right-hand turn signal is faulty.
X
Visit a qualified specialist workshop. b Left-hand
main beam
or
Right-
hand main
beam The left-hand or right-hand main beam headlamp is faulty.
X
Change the bulb (Y page 369).344
Display
messagesPractical advice
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