2009 MERCEDES-BENZ GL SUV ignition

Engine
Problem
Possible causes/consequences and
X
X Solutions 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 63) 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 88). 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 can hear the
starter motor operat-
ing. The reserve fuel
warning lamp is on and
the fuel gauge
shows
0. The fuel tank has been run dry.
X
Refuel the vehicle. 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 276).
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. 242
TroubleshootingPractical advice
* optional
X164_AKB; 2; 3, en-GB
wobuchh,
Version: 2.11.8.1 2009-03-31T14:14:58+02:00 - Seite 242
Dateiname: 6515431202_buchblock.pdf; erzeugt am 01. Apr 2009 00:18:02; WK

Problem
Possible causes/consequences and
X
X Solutions Vehicles with a petrol
engine:
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. The coolant tempera-
ture gauge shows a
value above 120 †.
You also hear a warning
tone. 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 177). 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. The engine does not
switch off. The ignition lock is faulty.
X
Open the fuse box in the engine compartment (Y page 281).
X Remove fuse 120 using the fuse extractor.
The engine stops.
If you wish to start the engine again:
X Replace the fuse. Troubleshooting
243Practical advice
X164_AKB; 2; 3, en-GB
wobuchh, Version: 2.11.8.1 2009-03-31T14:14:58+02:00 - Seite 243 Z
Dateiname: 6515431202_buchblock.pdf; erzeugt am 01. Apr 2009 00:18:02; WK

Automatic transmission
Problem
Possible causes/consequences and
X XSolutions 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 63) 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. 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 203).
X Switch the ignition back on. 244
TroubleshootingPractical advice
* optional
X164_AKB; 2; 3, en-GB
wobuchh,
Version: 2.11.8.1 2009-03-31T14:14:58+02:00 - Seite 244
Dateiname: 6515431202_buchblock.pdf; erzeugt am 01. Apr 2009 00:18:02; WK

Problem
Possible causes/consequences and
X
X Solutions 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
X Solutions 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. 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. Troubleshooting
245Practical advice
X164_AKB; 2; 3, en-GB
wobuchh, Version: 2.11.8.1 2009-03-31T14:14:58+02:00 - Seite 245 Z
Dateiname: 6515431202_buchblock.pdf; erzeugt am 01. Apr 2009 00:18:02; WK

Problem
Possible causes/consequences and
X XSolutions The engine cannot be
started using the key. The on-board voltage is too low.
X
Switch off non-essential consumers, e.g. seat heating* or inte-
rior lighting, and try to start the engine again.
If this does not work:
X Check the starter battery and charge it if necessary
(Y page 272).
or
X Jump-start the vehicle (Y page 276).
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. Trailer towing*
Problem
Possible causes/consequences and
X XSolutions The ball coupling can-
not be locked.
The key cannot be
removed from the ball
coupling.
G
Risk of accident
The ball coupling is dirty.
The trailer coupling is damaged.
X Remove the ball coupling and clean it (Y page 203). If the ball
coupling still cannot be locked, remove the ball coupling. It must
no longer be used to tow a trailer, as safe operation is not guar-
anteed.
X Have the entire trailer coupling checked at a qualified specialist
workshop. 248
TroubleshootingPractical advice
* optional
X164_AKB; 2; 3, en-GB
wobuchh,
Version: 2.11.8.1 2009-03-31T14:14:58+02:00 - Seite 248
Dateiname: 6515431202_buchblock.pdf; erzeugt am 01. Apr 2009 00:18:03; WK

Locking/unlocking in an emergency
Emergency key element
If you use the emergency key element to
unlock and open the driver's door, the anti-
theft alarm system* will be triggered
(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. Removing the emergency key element
(vehicles without KEYLESS GO*) X
Push release catch :in the direction of
the arrow and at the same time remove
emergency key element ;from the key. Unlocking the vehicle
If the vehicle can no longer be unlocked cen-
trally with the key or KEYLESS GO*:
X Remove the emergency key element from
the key (Y page 250). X
Insert the emergency key element into the
lock of the driver's door as far as it will go.
X Firmly turn the emergency key element
anti-clockwise as far as it will go to position
1 and hold it in this position.
i On right-hand-drive vehicles, turn the
emergency key element clockwise.
X Pull the door handle firmly.
The locking knob pops up. 250
Locking/unlocking in an emergencyPractical advice
* optional
X164_AKB; 2; 3, en-GB
wobuchh
,V ersion: 2.11.8.1
2009-03-31T14:14:58+02:00 - Seite 250
Dateiname: 6515431202_buchblock.pdf; erzeugt am 01. Apr 2009 00:18:03; WK

X
Switch off the lights.
X Open the tailgate.
X Remove screws :.
X Remove licence plate lamp.
X Replace the bulb.
X Insert licence plate lamp.
X Replace and tighten screws :.Replacing the wiper blades
Windscreen wiper blades
G
Risk of accident
The windscreen will no longer be wiped prop-
erly if the wiper blades are worn. This could
prevent you from observing the traffic condi-
tions, thereby causing an accident. Replace
the wiper blades twice a year, ideally in spring
and autumn. G
Risk of accident
The wiper arms could start moving and cause
an injury if you leave the windscreen wipers
switched on.
Remove the key from the ignition lock before
replacing the wiper blades.
! To avoid damaging the windscreen wiper
blades, make sure that you touch only the
wiper arm of the windscreen wiper.
Removing X
Remove the key from the ignition lock.
X Fold the wiper arm away from the wind-
screen. X
Press both release clips ;.
X Fold wiper blade :in the direction of
arrow =away from wiper arm ?.
X Remove wiper blade :in the direction of
arrow A.
Fitting X
Position new wiper blade :with
recess Bon lug A.
X Fold wiper blade :in the direction of
arrow =onto the wiper arm, until retaining
clips ;engage in bracket ?.
X Make sure that wiper blade :is seated
correctly.
X Fold the wiper arm back onto the wind-
screen. Replacing the wiper blades
261Practical advice
X164_AKB; 2; 3, en-GB
wobuchh, Version: 2.11.8.1 2009-03-31T14:14:58+02:00 - Seite 261 Z
Dateiname: 6515431202_buchblock.pdf; erzeugt am 01. Apr 2009 00:18:08; WK

Rear window wiper blade
G
Risk of injury
The wiper arm could be set in motion and
injure you if the windscreen wipers are
switched on.
Remove the key from the ignition lock before
replacing the wiper blade.
Removing X
Remove the key from the ignition lock.
X Fold wiper arm :away from the rear win-
dow until it engages.
X Position wiper blade ;at a right angle to
wiper arm :.
X Hold wiper arm :and press wiper
blade ;in the direction of the arrow until
it releases.
X Remove wiper blade ;.
Fitting X
Place the new wiper blade ;onto wiper
arm :.
X Hold wiper arm :and press wiper
blade ;in the opposite direction to the
arrow until it engages.
X Make sure that wiper blade ;is seated
correctly. X
Position wiper blade ;parallel to wiper
arm :.
X Fold wiper arm :back onto the rear win-
dow. Flat tyre
Flat tyre equipment variants
Your vehicle may be equipped with:
R a TIREFIT kit (Y page 209)
R a "Minispare" emergency spare
wheel* (Y page 210)
R a spare wheel * (Ypage 210) Preparing the vehicle
X Make sure that highway level* is selec-
ted 35
(Ypage 129).
X Stop the vehicle as far away as possible
from traffic on solid, non-slippery and level
ground.
X Switch on the hazard warning lamps.
X Firmly depress the parking brake.
X Move the DIRECT SELECT selector lever to
P.
X All occupants must get out of the vehicle.
Make sure that they are not endangered as
they get out of the vehicle.
X Make sure that no one is near the danger
area whilst a wheel is being changed. Any-
one who is not directly assisting in the
wheel change should, for example, stand
behind the barrier.
X Switch off the engine.
X Vehicles without KEYLESS GO*: remove
the key from the ignition lock.
X Vehicles with KEYLESS GO*: open the
driver's door.
The on-board electronics have status 0,
which is the same as the key having been
removed.
35 Not on steel-sprung vehicles. 262
Flat tyrePractical advice
* optional
X164_AKB; 2; 3, en-GB
wobuchh,
Version: 2.11.8.1 2009-03-31T14:14:58+02:00 - Seite 262
Dateiname: 6515431202_buchblock.pdf; erzeugt am 01. Apr 2009 00:18:09; WK