2008 MERCEDES-BENZ G-CLASS SUV Owners Manual

Troubleshooting
222 Automatic transmission
Problem Possible cause/consequence Suggested solutions
The transmission has problems
shifting gear The transmission is losing oil. X
Have the transmission checked at a qualified specialist workshop
immediatel y. The acceleration ability is deteri-
orating.
The transmission no longer
changes gear. The transmission is in emergency
mode.
It is only possible to shift into
2nd
gear and reverse gear. X
Stop the vehicle.
X Move the selector lever to P.
X Turn the key to position 0in the ignition lock.
X Wait at least 10 seconds before restarting the engine.
X Move the selector lever to position Dor R.
If D is selected, the transmission shifts into 2ndgear; if Ris selec-
ted, the transmission shifts into reverse gear.
X Have the transmission checked at a qualified specialist workshop
immediately. Ultrasonic reversing aid*
Problem Possible cause/consequence Suggested solutions
When you engage the selector
lever into position
R, you will not
hear a warning tone and none of
the segments of the ultrasonic
reversing aid will light up. You have a trailer connected.
You have an adapter plug inser-
ted into the trailer power socket. X
Unplug the adapter plug.
The ultrasonic reversing aid functions again as usual. Practical advice
* optional
463_AKB; 1; 8, en-GB
wobuchh,
Version: 2.10.6 2008-07-17T15:19:41+02:00 - Seite 222Dateiname: 6515_4091_02_buchblock.pdf; preflight

Troubleshooting
223Problem Possible cause/consequence Suggested solutions
You hear a warning signal when
reversing. The ultrasonic reversing aid sen-
sors are dirty or there is interfer-
ence. X
Clean the ultrasonic reversing aid sensors (Y page 186).
X Switch the ignition back on. The problem ma
y be caused by an
external source of radio or ultra-
sound waves. The ultrasonic
reversing aid is switched off. X
See if ultrasonic reversing aid functions in a different location. You hear a warning tone when
reversing or you do not hear a
warning tone and none of the seg-
ments light up. The ultrasonic reversing aid has
malfunctioned and has switched
itself off. X
Have the ultrasonic reversing aid checked at a qualified specialist
workshop as soon as possible. Headlamps and turn signals
Problem Possible cause/consequence Suggested solutions
The headlamps or the turn signals
in the exterior mirrors are misted
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. Practical advice
463_AKB; 1; 8, en-GB
wobuchh,
Version: 2.10.6 2008-07-17T15:19:41+02:00 - Seite 223 ZDateiname: 6515_4091_02_buchblock.pdf; preflight

Troubleshooting
224 Windscreen wipers
Problem Possible cause/consequence Suggested solutions
The windscreen wipers are jam-
med. 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 com-
pletely. 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 work-
shop. Windows
Problem Possible cause/consequence Suggested solutions
A side window will not close. Something is trapped between
the window and the door frame. X
Remove the objects.
X Close the side window. There are objects in the window
guide rail which are preventing
the window from being raised. X
Remove the objects.
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 84).Practical advice
463_AKB; 1; 8, en-GB
wobuchh,
Version: 2.10.6 2008-07-17T15:19:41+02:00 - Seite 224Dateiname: 6515_4091_02_buchblock.pdf; preflight

Troubleshooting
225Mirrors
Problem Possible cause/consequence Suggested solutions
An exterior mirror has been
pushed out of position. X
Push the mirror into the correct position manually. Key
Problem Possible cause/consequence Suggested solutions
You cannot lock or unlock the
vehicle using the key. The key batteries are discharged
or nearl
y 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 Lock or unlock the vehicle using the emergency key element
(Y page 229).
X Check the key batteries (Y page 234) and replace them if neces-
sary ( Ypage 234). The key is faulty. X
Lock or unlock the vehicle using the emergency key element
(Y page 229).
X Have the key checked at a qualified specialist workshop. The battery charge indicator lamp
of the key does not go on during
the test. The key batteries are discharged. X
Change the batteries ( Ypage 234). 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. Practical advice
463_AKB; 1; 8, en-GB
wobuchh,
Version: 2.10.6 2008-07-17T15:19:41+02:00 - Seite 225 ZDateiname: 6515_4091_02_buchblock.pdf; preflight

Troubleshooting
226 Problem Possible cause/consequence Suggested solutions
You have lost the emergency key
element. X
Report the loss immediatel y to the vehicle insurers.
X If necessary, have the manual locks changed too. The key cannot be turned in the
ignition lock. The key has been in position
0for
a considerable time. X
Remove the key and reinsert it into the ignition lock.
X Check the starter battery and recharge it if necessary
(Y page 250).
X Start the engine. The on-board voltage is too low. X
Switch off non-essential consumers, e.g. seat heating or interior
lighting, and try to turn the key again.
If this does not work:
X Check the starter battery and recharge it if necessary
(Y page 250).
or
X Jump-start the vehicle (Y page 251).
or
X Consult a qualified specialist workshop. Practical advice
463_AKB; 1; 8, en-GB
wobuchh,
Version: 2.10.6 2008-07-17T15:19:41+02:00 - Seite 226Dateiname: 6515_4091_02_buchblock.pdf; preflight

Troubleshooting
227Soft top switch*
Problem Possible cause/consequence Suggested solutions
The soft top will not open or
close. The soft top closing procedure
has been interrupted. X
Wait five seconds and repeat the procedure. The fuse is faulty. X
Check the fuse and replace it if necessary (Y page 255). The hydraulic pump has overhea-
ted. X
Wait a few minutes and repeat the procedure. The control unit is malfunctioning
because the closing procedure
has been interrupted. X
Turn the key to position 0and back to 2in the ignition lock.
X Attempt to close the soft top again.
If you are still unable to close it electrically:
X Close the soft top manually
(Y page 232).
X Have the system checked at a qualified specialist workshop. Practical advice
* optional
463_AKB; 1; 8, en-GB
wobuchh,
Version: 2.10.6 2008-07-17T15:19:41+02:00 - Seite 227 ZDateiname: 6515_4091_02_buchblock.pdf; preflight

Troubleshooting
228 Auxiliary heating/ventilation*
Problem Possible cause/consequence Suggested solutions
The indicator lamp in the auxiliary
heating remote control lights up
orange. The remote control batteries are
almost discharged. X
Replace the remote control batteries (Y page 235).The indicator lamp in the auxiliary
heating remote control flashes
orange. The remote control batteries are
discharged. X
Replace the remote control batteries (Y page 235).Parking up the vehicle
Problem Possible cause/consequence Suggested solutions
The vehicle is to be left parked up
for longer than six weeks. Damage resulting from non-use
ma
y occur if the vehicle is parked
up for long periods. X
Visit a qualified specialist workshop and seek advice.
X Disconnect the battery (Y page 248).Practical advice
* optional
463_AKB; 1; 8, en-GB
wobuchh,
Version: 2.10.6 2008-07-17T15:19:41+02:00 - Seite 228Dateiname: 6515_4091_02_buchblock.pdf; preflight

Locking/unlocking in an emergency
229Locking/unlocking in an emergency
Emergency key
If the vehicle can no longer be locked or
unlocked with the key, use the 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 51).
There are several ways to turn off the alarm:
X Press the korj button on the key.
or
X Insert the key into the ignition lock.
If you unlock the vehicle using the emergency
key element, the fuel filler flap will not be
unlocked automatically.
X To unlock the fuel filler flap: insert the
key in the ignition lock. Releasing and removing the emergency
key element 1
Release catch
2 Emergency key element
X Push release catch 1in the direction of
the arrow and at the same time remove
emergency key element 2from the key. Unlocking the vehicle
If the vehicle can no longer be unlocked cen-
trally with the key:
X Remove the emergency key element from
the key (Y page 229).
Unlocking the driver's door X
Insert the emergency key element into the
lock of the driver's door as far as it will go.
X Turn the emergency key element anti-
clockwise.
The door is unlocked.
X Turn the emergency key element back and
remove it.
Unlocking the rear door (station wagon) X
Insert the emergency key element into the
driver's door lock as far as it will go.
X Turn the emergency key element anti-
clockwise.
The door is unlocked.
X Turn the emergency key element back and
remove it. Practical advice
* optional
463_AKB; 1; 8, en-GB
wobuchh ,V ersion: 2.10.6
2008-07-17T15:19:41+02:00 - Seite 229 ZDateiname: 6515_4091_02_buchblock.pdf; preflight