2003 MERCEDES-BENZ G55AMG engine

253 Practical hints
What to do if …
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B
COOLANT
STOP, ENGINE OFF!
The poly-V-belt could be broken.

Stop immediately and check
the poly-V-belt.
If it is broken:

Do not continue to drive. Oth-
erwise the engine will overheat
due to an inoperative water
pump which may result in
damage to the engine. Notify
an authorized Mercedes-Benz
Light Truck Center.
If it is in order:

Do not continue to drive the
vehicle with this message dis-
played. Doing so could result
in serious engine damage that
is not covered by the
Mercedes-Benz Limited War-
ranty.
1
COOLANT
VISIT WORKSHOP!
The cooling fan for the coolant is
malfunctioning.

Observe the coolant tempera-
ture display (
page 108).

Have the fan replaced as soon
as possible.
2

254 Practical hintsWhat to do if …Display
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Ñ
CRUISE CONTROL
VISIT WORKSHOP!
Cruise control is malfunctioning.

Visit an authorized
Mercedes-Benz Light Truck
Center.
2
J
DOOR OPEN!
You are attempting to drive with one
or more doors open.

Close the doors.
1
e
ENGINE AIR FILTER
VISIT WORKSHOP!
The engine filter is clogged and must
be replaced.

Visit an authorized
Mercedes-Benz Light Truck
Center as soon as possible.
2
:
ENGINE OIL LEVEL
STOP, ENGINE OFF!
There is no oil in the engine. There is
a danger of engine damage.
See also comments on the following
page.

Carefully bring the vehicle to a
halt as soon as possible.

Turn off the engine.

Add engine oil and check the
engine oil level (
page 218).
1
ENGINE OIL LEVEL
CHECK LEVEL!
The engine oil level is too low.
See also comments on the following
page.

Check the engine oil level
(page 218) and add oil as re-
quired.
2
ENGINE OIL LEVEL
REDUCE OIL LEVEL!
You have added too much engine oil.
There is a risk of damaging the en-
gine or the catalytic converter.
See also comments on the following
page.

Have oil siphoned. Observe all
legal requirements with re-
spect to its disposal.
2

255 Practical hints
What to do if …
When the ENGINE OIL LEVEL – CHECK
LEVEL! message appears while the engine
is running and at operating temperature,
the engine oil level has dropped to approx-
imately the minimum mark on the dipstick.
When this occurs, the warning will first
come on intermittently and then stay on if
the oil level drops further.If no oil leaks are noted, continue to drive
to the nearest service station where the
engine oil should be topped to the “full”
mark on the dipstick with an approved oil.:
ENGINE OIL
VISIT WORKSHOP!
The engine oil has dropped to a crit-
ical level.

Check the engine oil level
(page 218) and add oil as re-
quired.

If you must add engine oil fre-
quently, have the engine
checked for possible leaks.
2
There is water in the oil.

Have the oil checked.
ENGINE OIL LEVEL
VISIT WORKSHOP!
The measuring system is malfunc-
tioning.

Have the measuring system
checked by an authorized
Mercedes-Benz Light Truck
Center.
2
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!The engine oil level warnings should
not be ignored. Extended driving with
the symbol displayed could result in se-
rious engine damage that is not cov-
ered by the Mercedes-Benz Limited
Warranty.

257 Practical hints
What to do if …
ESP
ELEC. STABIL. PROG.
NOT AVAILABLE
The ESP is deactivated because of a
malfunction or interrupted power
supply. The ABS might not be opera-
tional.
The system must be resynchronized.

With vehicle stationary and the
engine running, turn the steer-
ing wheel completely to the
left and then to the right to
synchronize the ESP.
If the ESP message does not go
out:

Continue driving with added
caution.

Visit an authorized
Mercedes-Benz Light Truck
Center as soon as possible.
Failure to follow these instructions
increases the risk of accident.
2
The ESP is temporarily unavailable.
The self-diagnosis has not been
completed.
The display will clear itself after
driving a short distance at more
than 12 mph (20 km/h).
The charging voltage has fallen be-
low 10 volts and the ESP has
switched off.

When the voltage is above this
value again, the ESP is opera-
tional again.

If necessary, have the genera-
tor and battery checked.
2
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258 Practical hintsWhat to do if …ESP
ELEC. STABIL. PROG.
VISIT WORKSHOP!
The ESP is switched off due to a mal-
function or an interruption in the
power supply.
The brake system is still functioning
normally but without the ESP avail-
able.
If in addition the ABS is malfunction-
ing, only partial engine output will be
available.

Continue driving with added
caution.

Have the system checked at
an authorized Mercedes-Benz
Light Truck Center as soon as
possible.
Failure to follow these instructions
increases the risk of accident.
2
ì
FUNCTION
NOT AVAILABLE!
This display appears if button
ì

or
í
on the multifunction steer-
ing wheel is pressed and the vehicle
is not equipped with a telephone.
3
Y
HOOD OPEN!
You are driving with the hood open.

Close the hood (
page 217).
2
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261 Practical hints
What to do if …
.
LAMP SENSOR
VISIT WORKSHOP!
The lamp sensor is malfunctioning.
The headlamps switch on automati-
cally.

In the control system, set lamp
operation to manual
(page 124).

Switch on headlamps using
the exterior lamp switch
(page 100).
2
LEFT FRT. PARK LAMP
CHECK LAMP!

SUBSTITUTE LAMP ON!

The left parking lamps are malfunc-
tioning. A backup bulb is being used.

Replace the bulb as soon as
possible.
2
LICENSE PLATE, L
CHECK LAMP!

The left licence plate lamp is mal-
functioning.

Replace the bulb as soon as
possible.
2
LICENSE PLATE, R
CHECK LAMP!

The right licence plate lamp is mal-
functioning.

Replace the bulb as soon as
possible.
2
LIGHTS
SWITCH OFF LAMPS!
The display appears if the driver’s
door is opened with the engine shut
off and no key in the starter switch.

Insert key in the starter switch.

Switch off lights (
page 100).
1
LOW BEAM, L
CHECK LAMP!
The left low beam lamp is malfunc-
tioning.

Visit an authorized
Mercedes-Benz Light Truck
Center as soon as possible.
2
LOW BEAM, R
CHECK LAMP!
The right low beam lamp is malfunc-
tioning.

Visit an authorized
Mercedes-Benz Light Truck
Center as soon as possible.
2
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266 Practical hintsWhat to do if …Display
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§
TC SHIFT
CANCELLED
The shift process in the transfer
case was cancelled because of a
malfunction.

Repeat the shift process
(page 141).
2
§
TC SHIFT CONDITIONS
NOT FULFILLED
You have not met the shift condi-
tions for a selection process in the
transfer case.

Repeat the shift process
(page 141).
2
§
TRANSFER CASE
VISIT WORKSHOP!
The transfer case is malfunctioning.

Do not switch the transfer
case on.

Visit an authorized
Mercedes-Benz Light Truck
Center as soon as possible.
2
L
TELE AID
VISIT WORKSHOP!
One or more main functions of the
Tele Aid system are malfunctioning.

Have the Tele Aid system
checked by an authorized Mer-
cedes-Benz Light Truck Cen-
ter.
1
Ê
TRUNK OPEN!
This message will appear whenever
the tailgate is open.

Close the tailgate.
2
#
UNDERVOLTAGE
ENGINE ON!
The battery has insufficient voltage.

Start the engine.
1
UNDERVOLTAGE
SWITCH CONSUMER OFF!
The battery has insufficient voltage.

Have the battery checked at a
service station.
1

292 Practical hintsFlat tirePump handle (three pieces)1Indent for activation of release bolt2
Assemble the pump handle for the
jack. The pump handle is located in the
vehicle tool kit.
Jack2Release bolt
Close release bolt2.
To do so, turn indent1 to the right in
the pump lever until its stop.

Place jack on firm ground.

Position jack under the axle housing,
so that it is always vertical (plumb-line)
as seen from the side, even if the vehi-
cle is parked on an incline.
Be certain the jack arm is positioned
correctly under the axle housing (axle
must fall into jack contour).

Jack up the vehicle by pumping (arrow)
until the wheel is clear of the ground.
Never start engine while vehicle is
raised.
iNever turn release bolt2 more than
one or two revolutions. Hydraulic fluid
can otherwise escape.