2008 MERCEDES-BENZ G-CLASS SUV engine

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
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Flat tyre
243
X
Press locking spring 1.
X Slide wiper blade 3with hinge piece 4
from wiper arm 2.
Fit ting 1
Locking spring
2 Wiper arm
3 Wiper blade
4 Hinge piece
X Slide the new wiper blade 3with the
recess onto wiper arm 2.
X Engage locking spring 1into the end of
the wiper arm. X
Make sure that wiper blade 3is seated
correctly.
X Fold wiper arm 2back onto the wind-
screen. Flat tyre
Preparing the vehicle
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 Deactivate the automatic door locking
(Y page 108).
X Position the wheels in the straight-ahead
position.
X Engage the steering wheel lock.
X Apply the parking brake.
X Move the selector lever to P.
X All occupants must get out of the vehicle.
Make sure that they are not endangered as
they do so.
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 Remove the key from the ignition lock.
X Get out of the vehicle. Practical advice
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Flat tyre
244
X
Close the driver’s door.
X Place the warning triangle ( Ypage 188) or
warning lamps at a suitable distance.
Observe legal requirements. Changing a wheel and fitting the spare
wheel G
Risk of accident
If the spare wheel is more than six years
old, or it does not correspond to the regular
wheel type: have the spare wheel replaced
by a new wheel at the nearest qualified spe-
cialist workshop, e.g. a Mercedes-Benz
Service Centre.
Never drive the vehicle with more than one
spare wheel fitted.
Vehicles with different tyre dimensions on
the front and rear axles: wheel and tyre size
of the spare wheel and normal wheel are
different. When using the spare wheel, the
handling characteristics are compromised.
Do not exceed the maximum speed of 80
km/h. G
Risk of accident
Vehicles with AMG equipment: when you fit
the spare wheel, make sure you observe the
following:
R the maximum speed of 80 km/h
R the prescribed tyre pressure
Preparing the vehicle X
Prepare the vehicle as described
(Y page 243).
X If a trailer is coupled, uncouple it.
X Remove the vehicle tool kit and the jack
(Y page 191).
X Remove the spare wheel from the spare
wheel bracket (Y page 192).
X Secure the vehicle to prevent it from rolling
away.
On level ground: place chocks or similar
items under the front and rear of the wheel
that is diagonally opposite the wheel you
wish to change.
X On downhill gradients: place chocks or
similar items under both wheels of the
other axle. Raising
the vehicle G
Risk of injury
The jack is designed only to raise the vehi-
cle for a short time while a wheel is being
changed.
The vehicle must be placed on stands if you
intend to work under it.
Make sure that the jack is placed on a firm,
non-slip, level surface. Do not use wooden
blocks or similar items as jacking supports.
Otherwise, the jack will not be able to ach-
ieve its load-bearing capacity due to the
restricted height.
Do not start the engine at any time while
the wheel is being changed.
Do not lie under the vehicle when it is being
supported by the jack. If you do not raise
the vehicle as described, it could slip off the
jack (e.g. when starting the engine, opening
or closing a door or the tailgate) and you
could be seriously injured. G
Risk of accident
If you fail to position the jack correctly, the
vehicle may: Practical advice
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Battery
248 Take them to a Mercedes-Benz Service
Centre or to a special collection point for
old batteries. G
Risk of injury
For safety reasons, Mercedes-Benz recom-
mends that you only use batteries which
have been tested and approved for your
vehicle by Mercedes-Benz. These batteries
provide increased impact protection to pre-
vent vehicle occupants from suffering acid
burns should the battery be damaged in the
event of an accident.
To prevent acid burns, observe the follow-
ing safety notes when handling batteries:
R Do not lean over batteries.
R Do not place any metal objects on a bat-
tery. You could otherwise cause a short
circuit and the battery's highly flammable
gas mixture could ignite.
R Make sure that you do not create an elec-
trostatic charge, e.g. by wearing syn-
thetic clothing or as a result of friction on
fabrics. Therefore, you should not pull or
slide the battery over carpets or other
synthetic materials.
R Never touch the battery first. To dis-
charge a possible electrostatic charge, step out of the vehicle first and touch the
bodywork.
R Do not wipe the battery using a cloth. The
battery may explode as a result of elec-
trostatic charge or due to flying sparks.
! Switch off the engine and remove the key
before disconnecting or removing the ter-
minal clamps from the battery. You may
otherwise destroy electronic components,
such as the alternator.
! Have the starter battery checked and, if
necessary, replaced at a qualified specialist
workshop, e.g. a Mercedes-Benz Service
Centre, every two years or at least every
20,000 km.
i Mercedes-Benz recommends that you
have all work involving the battery, e.g.
removing, charging and replacing, carried
out at a qualified specialist workshop, e.g.
a Mercedes-Benz Service Centre.
The battery is located in the vehicle interior
under a cover in the rear footwell. Disconnecting the battery
G
Risk of accident
If the battery is disconnected:
R the brake boosting effect will not be avail-
able. Greater braking force will then be
required and the brake pedal travel will
be longer. If necessary, depress the
brake pedal with maximum force.
R you will no longer be able to turn the key
in the ignition lock
R the selector lever is locked in position P
! Always disconnect the battery in the
order described below. Never swap the ter-
minal clamps. You may otherwise damage
the vehicle electronics.
X Apply the parking brake.
X Move the selector lever to P.
X Switch off all electrical consumers.
X Turn the key to 0and remove it. Practical advice
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Jump-starting
251
X
Connect positive terminal clamp 1and
secure the cover.
X Connect negative terminal clamp 3.
X Connect breather hose 4. Make sure that
a cell cap is fitted between battery 2and
breather hose 4.
i If the battery power supply has been inter-
rupted (e.g. if it has been reconnected), you
must carry out the following tasks:2
R set the time (Y page 106)
R reset the head restraints on the front
seats (Y page 61)
R reset the side windows ( Ypage 85) Jump-starting
If your vehicle's battery is discharged, the
engine can be jump-started from another
vehicle or from an external battery using jump
leads.
Observe the following points:
R Jump-starting may only be performed when
the engine and catalytic converter are cold.
R Do not start the engine if the battery is fro-
zen. Let the battery thaw first.
R Jump-starting may only be performed with
batteries that have the same nominal volt-
age.
R Only use jump leads which are protected
against polarity reversal and which have a
sufficient cross-section and insulated ter-
minal clamps.
i Jump leads which are protected against
polarity reversal and further information
about jump-starting can be obtained from
any Mercedes-Benz Service Centre.
! Avoid repeated and lengthy starting
attempts. Only use the jump-starting pro-
cedure for the battery in the engine com-
partment. Do not use a rapid-charging device to start
the engine. G
Risk of injury
There is a risk of acid burns when jump-
starting a vehicle due to the gases which
escape from the battery. Do not lean over
the battery while the engine is being jump-
started. G
Risk of explosion
Gases escaping from the battery during
jump-starting may cause minor explosions.
Avoid creating sparks. Keep naked flames
away from the battery, and do not smoke.
Comply with safety precautions and take
protective measures when handling batter-
ies. You will find these under "Battery" in
the index.
X Make sure that the two vehicles do not
touch.
X Apply the parking brake.
X Move the selector lever to P.
X Switch off all electrical consumers. Practical advice
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Towing and tow-starting
252
The jump-starting terminals are on the left-
hand side in the engine compartment when
viewed in the direction of travel. 1
Cover
2 Positive terminal (+)
3 Negative terminal (-)
X Lift up the cover of positive terminal 2on
your own vehicle.
X Connect positive terminal 2on your vehi-
cle to positive terminal of the donor battery
using the jump lead, beginning with your
own battery.
X Start the engine of the donor vehicle and
run it at idling speed.
X Connect negative terminal 3of the donor
battery to negative terminal of your vehi- cle's battery using the jump lead, connect-
ing the jump lead to the donor battery first.
X Start the engine.
X Electrical consumers can be switched on
again. Do not switch the lights on, however,
as this will overload the battery.
X Remove the jump lead from the negative
terminals 3first, and then from the posi-
tive terminals 2, each time disconnecting
from the battery on your own vehicle first.
X Have the battery checked at a qualified
specialist workshop, e.g. a Mercedes-Benz
Service Centre. Towing and tow-starting
Points to remember
G
Risk of accident
If you have the vehicle towed, you must use
a rigid towing bar if:
R the engine is not running.
R there is a brake system malfunction.
R there is a malfunction in the voltage sup-
ply or the vehicle's electrical system.
The electric power steering and the brake
force booster do not work when the engine
is not running. Greater braking force will
then be required and brake pedal travel will
be longer. If necessary, depress the brake
pedal with full force.
Do not tow the vehicle if the key cannot be
turned in the ignition lock. If this is the case,
the steering is locked and the vehicle can-
not be steered.
If you tow or tow-start another vehicle, its
weight must not exceed the maximum per-
missible gross vehicle weight of your vehi-
cle.
It is better to have the vehicle transported
than to have it towed. Practical advice
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Towing and tow-starting
253
When towing, observe the legal requirements
in all countries concerned.
!
When towing, pull away slowly and with-
out jerking. If the tractive power is too high,
the vehicles could be damaged.
! You may tow the vehicle for a maximum
of 50 km. A towing speed of 50 km/h must
not be exceeded.
With towing distances over 50 km, the
entire vehicle needs to be lifted up and
transported.
! Only secure the tow cable or towing bar
to the towing eyes. You may otherwise
damage the vehicle.
R Vehicles with an automatic transmission
must not be tow-started.
R If the transfer case can be shifted into neu-
tral N, you can tow the vehicle.
R If the transfer case cannot be shifted into
neutral N, you can tow the vehicle with one
axle raised. Please bear the following in
mind: -
remove the propeller shaft between the
transfer case and the rolling axle.
- turn the key to position 1in the ignition
lock.
R If the engine does not start, try jump start-
ing (Y page 251).
R If it is not possible to jump-start the vehicle,
have it towed to the nearest qualified spe-
cialist workshop, e.g. a Mercedes-Benz
Service Centre.
R Before towing the vehicle, make sure that
the battery is connected and charged. Oth-
erwise:
- you cannot switch on the ignition
- you cannot move the selector lever to N
i Switch off the automatic locking feature
before the vehicle is towed (Y page 108).
You could otherwise be locked out when
pushing or towing the vehicle. Towing eye
Towing eye, front The vehicle is equipped with two towing eyes.
These are located at the front, under the
bumper.
1
Example: front towing eye, left-hand side Practical advice
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Towing and tow-starting
254
Towing eye, rear The rear towing eye is located under the
bumper, on the left-hand side when viewed in
the direction of travel. 1
Towing eye Towing the vehicle
! You may tow the vehicle for a maximum
of 50 km. A towing speed of 50 km/h must
not be exceeded.
With towing distances over 50 km, the
entire vehicle needs to be lifted up and
transported. X
Turn the key to position 2in the ignition
lock.
X Shift the transfer case to neutral position
N (Y page 92).
X Move the selector lever to N.
i The transmission can only change gear
when the battery has sufficient charge.
If you cannot move the selector lever to
N, you must remove the propellor shafts to
the driven axles. Transporting the vehicle
The towing eyes can be used to pull the vehi-
cle onto a trailer or transporter for transport-
ing purposes.
! Only lash the vehicle down by the wheels
or wheel rims, not by parts of the vehicle
such as axle or steering components. The
vehicle could otherwise be damaged.
X Turn the key to position 2in the ignition
lock.
X Move the selector lever to N.
X Shift the transfer case to neutral position
N (Y page 92). Recovering a vehicle that has become
stuck
Take great care when recovering a vehicle
whose drive wheels have become embedded
in loose earth or mud, particularly if the vehi-
cle is laden.
When recovering the vehicle do not use jerky
movements and do not pull it at an angle. The
chassis could otherwise be damaged.
Never attempt to recover a vehicle with a
trailer attached.
Pull out the vehicle backwards, if possible
using the tracks it made when it became
stuck. Towing in the event of malfunctions
Engine damage, gear damage or electri-
cal faults X
Move the selector lever to N(Y page 90).
X Change gear into neutral N(Y page 92).
In the event of damage to the transfer
case Have the propeller shafts between the axles
and the transfer case removed.Practical advice
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