2009 MERCEDES-BENZ CL COUPE Owners Manual

Engine
Problem
Possible causes/consequences and
X XSolutions The engine will not
start. You can hear the
starter motor operat-
ing. R
There is a malfunction in the engine electronics.
R There is a malfunction in the fuel supply.
R The on-board voltage is too low because the starter battery is
too weak or discharged.
X Before the next start attempt, turn the key back to position 0
(Y page 182) in the ignition lock or press the Start/Stop but-
ton* until all the indicator lights in the instrument cluster have
gone out.
X Try to start the engine again (Y page 202). When doing so,
remember that excessively long and frequent attempts to start
the engine will drain the battery.
If the engine does not start after several attempts:
X Consult a qualified specialist workshop. The engine will not
start. You cannot hear
the starter motor. The on-board voltage is too low because the starter battery is too
weak or discharged.
X
Jump-start the vehicle (Y page 384).
If the engine does not start despite attempting to jump-start it:
X Consult a qualified specialist workshop. The starter motor was exposed to a thermal load that was too high.
X
Allow the starter motor to cool down for approximately two
minutes.
X Try to start the engine again.
If the engine still does not start:
X Consult a qualified specialist workshop. The engine is not run-
ning smoothly and is
misfiring. There is a malfunction in the engine electronics or a mechanical
component of the engine control unit.
X
Only depress the accelerator pedal slightly.
X Have the cause rectified immediately at a qualified specialist
workshop.
Otherwise, non-combusted fuel may get into the catalytic con-
verter and damage it. 358
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Problem
Possible causes/consequences and
X
X Solutions The coolant tempera-
ture gauge shows a
value above 120 †.
The coolant warning
lamp may also light up
and a warning tone may
sound (Y
page 212). The coolant level is too low. The coolant is too hot and the engine
is no longer being cooled sufficiently.
X
Stop as soon as possible and allow the engine and the coolant
to cool down.
X Check the coolant level (Y page 294). Observe the warning
notes as you do so and top up the coolant if necessary. If the coolant level is correct, the radiator fan may be faulty. The
coolant is too hot and the engine is no longer being cooled suffi-
ciently.
X
If the coolant temperature is less than 120 †, you can continue
driving to the nearest qualified specialist workshop.
X Avoid heavy loads on the engine as you do so, e.g. driving on
mountain roads and stop/start driving. Automatic transmission
Problem
Possible causes/consequences and
X
X Solutions The transmission has
problems shifting gear. The transmission is losing oil.
X
Have the transmission checked at a qualified specialist work-
shop immediately. The acceleration ability
is deteriorating.
The transmission no
longer changes gear. The transmission is in emergency mode.
It is only possible to shift into
secondgear and reverse gear.
X Stop the vehicle.
X Turn the key in the ignition to position 0(Y page 182) or press
the Start/Stop button* repeatedly until all indicator lamps in
the instrument cluster go out.
X Wait at least 10 seconds before restarting the engine.
X Have the transmission checked at a qualified specialist work-
shop immediately. Troubleshooting
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PARKTRONIC
Problem
Possible causes/consequences and
X XSolutions Only the red segments
in the PARKTRONIC
warning display are lit.
You also hear a warning
tone for approximately
two seconds.
PARKTRONIC is deacti-
vated after approx-
imately 20 seconds and
the indicator lamp in
the PARKTRONIC but-
ton lights up. PARKTRONIC has malfunctioned and has switched itself off.
X
If problems persist, have PARKTRONIC checked at a qualified
specialist workshop. Only the red segments
in the PARKTRONIC
warning display are lit.
PARKTRONIC is deacti-
vated after approx-
imately 20 seconds. The PARKTRONIC sensors are dirty or there is interference.
X
Clean the PARKTRONIC sensors (Y page 310).
X Switch the ignition back on. Only the red segments
in the PARKTRONIC
warning display are lit.
PARKTRONIC is deacti-
vated after approx-
imately 20 seconds. The problem may be caused by an external source of radio or
ultrasound waves.
X
See if PARKTRONIC functions in a different location. Headlamps
Problem
Possible causes/consequences and
X XSolutions The headlamps are mis-
ted up on the inside. Air humidity is very high.
X
Drive with the headlamps switched on.
The headlamps are demisted after a short distance. The headlamp housing is not sealed and moisture has been able
to enter.
X
Have the headlamps checked at a qualified specialist workshop. 360
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Windscreen wipers
Problem
Possible causes/consequences and
X
X Solutions The windscreen wipers
are jammed. Leaves or snow, for example, may be obstructing the windscreen
wiper movement. The wiper motor has been deactivated.
X For safety reasons, you should remove the key from the ignition
lock.
X Remove the cause of the obstruction.
X Switch the windscreen wipers back on. The windscreen wipers
fail completely.
G
Risk of accident
The windscreen wiper drive is malfunctioning.
X Select another wiper speed on the combination switch.
X Have the windscreen wipers checked at a qualified specialist
workshop. The windscreen washer
fluid from the spray
nozzles no longer hits
the centre of the wind-
screen. The spray nozzles are misaligned.
X
Have the spray nozzles adjusted at a qualified specialist work-
shop. Side windows
Problem
Possible causes/consequences and
X
X Solutions A side window will not
close. An object is obstructing the side window and preventing it from
closing.
X
Remove the object(s).
X Close the side window. You cannot see the cause.
X
Close the side window with increased force or without the anti-
entrapment feature (Y page 201). Troubleshooting
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Mirrors
Problem
Possible causes/consequences and
X XSolutions An exterior mirror has
been pushed out of
position.
Vehicles with exterior mirrors that cannot be folded in/out elec-
trically:
X
Move the exterior mirror into the correct position manually.
Vehicles with electrically folding exterior mirrors*:
X Press the mirror-folding button* (Y page 189) repeatedly until
you hear a distinct click.
The mirror housing is engaged again and you can adjust the
mirror as usual (Y page 189). Key
Problem
Possible causes/consequences and
X XSolutions You cannot lock or
unlock the vehicle
using the key. The key batteries are discharged or nearly discharged.
X
Point the tip of the key at the driver's door handle from close
range and try to unlock or lock the vehicle again.
If this does not work:
X Unlock the vehicle using the emergency key element
(Y page 366).
X Check the key batteries and replace them if necessary
(Y page 367). The key is faulty.
X
Unlock the vehicle using the emergency key element
(Y page 366).
X Have the key checked at a qualified specialist workshop. 362
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Problem
Possible causes/consequences and
X
X Solutions You can no longer lock
or unlock the vehicle
using KEYLESS GO*.
KEYLESS GO* is in standby mode because the vehicle has not
been unlocked for an extended period.
X
Pull the door handle twice and then insert the key into the igni-
tion lock. KEYLESS GO* is malfunctioning.
X
Lock or unlock the vehicle using the remote control function of
the key. To do this, point the tip of the key at the driver's door
handle from close range and try to open the vehicle again.
X Have the key checked at a qualified specialist workshop. There is interference from a powerful source of radio waves.
X
Unlock the vehicle using the emergency key element
(Y page 366). You have lost a key.
X
Have the key cancelled at a Mercedes-Benz Service Centre.
X Report the loss immediately to the vehicle insurers.
X If necessary, have the manual locks changed too. You have lost the emer-
gency key element.
X
Report the loss immediately to the vehicle insurers.
X If necessary, have the manual locks changed too. The engine cannot be
started using the key. The on-board voltage is too low.
X Remove the key and reinsert it into the ignition lock.
X Start the engine within 30 seconds of inserting the key in the
ignition lock.
X Repeat if necessary.
If the engine does not start after several attempts:
X Check the starter battery and recharge it if necessary
(Y page 382).
or
X Jump-start the vehicle (Y page 384).
or
X Consult a qualified specialist workshop. The engine cannot be
started using KEYLESS
GO*. The key is in the
vehicle. A door is open. Therefore, the key cannot be detected as easily.
X
Close the door and try to start the vehicle again. There is interference from a powerful source of radio waves.
X
Start your vehicle using the key in the ignition lock. Troubleshooting
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Auxiliary heating/ventilation*
Display messages
Possible causes/consequences and
X
X Solutions FAIL The starter battery is not charged sufficiently or the system
is faulty.
X
Charge the starter battery.
X Make another attempt to switch on the auxiliary heating
using the remote control.
X Have the auxiliary heating checked at a qualified specialist
workshop. $ FAIL The signal transmission between the transmitter and the vehi-
cle is faulty.
X
Change your position in relation to the vehicle, moving
closer if necessary.
X Make another attempt to switch the auxiliary heating on or
off using the remote control. © FAIL There is not enough fuel in the fuel tank, or the auxiliary heat-
ing is faulty.
X
Refuel at the nearest filling station.
X Make another attempt to switch on the auxiliary heating
using the remote control.
X Have the auxiliary heating checked at a qualified specialist
workshop. Night View Assist*
Problem
Possible causes/consequences and
X XSolutions The picture quality of
Night View Assist has
deteriorated. The windscreen wipers are smearing the windscreen.
X
Replace the wiper blades (Y page 372). The windscreen is smeared after cleaning the vehicle in a car wash.
X
Clean the windscreen . Windscreen chip damage in the camera's field of vision.
X
Replace the windscreen. The windscreen is misted up on the inside.
X
Demist the windscreen (Y page 268). The windscreen is iced up.
X
De-ice the windscreen (Y page 267).364
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Problem
Possible causes/consequences and
X
X Solutions There is dirt on the inside of the windscreen.
X
Clean the inside of the windscreen . Parking up the vehicle
Problem
Possible causes/consequences and
X
X Solutions The vehicle is to be left
parked up for longer
than four weeks. The battery can be damaged through exhaustive discharge.
X
Disconnect the battery (Y page 385) or connect to a trickle
charger.
i Have the battery checked at a qualified specialist workshop,
e.g. a Mercedes-Benz Service Centre. The vehicle is to be left
parked up for longer
than six weeks. Damage resulting from non-use may occur if the vehicle is parked
up for long periods.
X
Visit a qualified specialist workshop and seek advice. Locking/unlocking in an emergency
Emergency key element
If you use the emergency key element to
unlock and open the driver's door or the boot
lid, the anti-theft alarm system* will be trig-
gered (Y page 54).
There are several ways to turn off the alarm:
X Press the %or& button on the key.
or
X Insert the key into the ignition lock.
or
X Press the Start/Stop button* in the ignition
lock. The key must be in the vehicle.
or
X Lock or unlock the vehicle using KEYLESS
GO*. The key must be outside the vehicle. Removing the emergency key element
(vehicles with KEYLESS GO) X
Push release catch :in the direction of
the arrow and at the same time remove
emergency key element ;from the key. Locking/unlocking in an emergency
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