2007 MERCEDES-BENZ G55AMG light

338 Practical hints
What to do if …
Vehicle status messages in the
multifunction display
Warning and malfunction messages
appear in the multifunction display located
in the instrument cluster.
Certain warning and malfunction mes-
sages are accompanied by an audible
signal.
Address these messages accordingly and
follow the additional instructions given in
this Operator’s Manual.
Selecting the vehicle status message
memory menu in the control system
(
page 144) displays both cleared and
uncleared messages.High-priority messages appear in the
multifunction display in red color.
Certain messages of high priority cannot
be cleared from the multifunction display
using the reset button (
page 130) or
buttonj,k,·, orè on the
multifunction steering wheel.
Other messages of high priority and
messages of less immediate priority can
be cleared from the multifunction display
using the reset button (
page 130) or
buttonj,k,·, orè on the
multifunction steering wheel. They are
then stored in the vehicle status message
memory (
page 144). Remember that
clearing a message will only make the
message disappear. Clearing a message
will not correct the condition that caused
the message to appear.
Warning!G
All categories of messages contain
important information which should be
taken note of and, where a malfunction is
indicated, addressed as soon as possible at
an authorized Mercedes-Benz Light Truck
Center.
Failure to repair condition noted may cause
damage not covered by the Mercedes-Benz
Limited Warranty, or result in property
damage or personal injury.

339 Practical hints
What to do if …
On the pages that follow, you will find a
compilation of the most important warning
and malfunction messages that may
appear in the multifunction display.
For your convenience the messages are
divided into two sections:

Text messages (page 340)

Symbol messages (page 344)
Warning!G
No messages will be displayed if either the
instrument cluster or the multifunction
display is inoperative.
As a result, you will not be able to see infor-
mation about your driving conditions, such
as speed or outside temperature, warn-
ing/indicator lamps, malfunction/warning
messages or the failure of any systems.
Driving characteristics may be impaired.
If you must continue to drive, please do so
with added caution. Contact an authorized
Mercedes-Benz Light Truck Center as soon
as possible.
iSwitching on the ignition causes all
instrument cluster lamps (except high beam
headlamp indicator lamp, and turn signal
indicator lamps unless activated) as well as the
multifunction display to come on. Make sure the
lamps and multifunction display are in working
order before starting your journey.

340 Practical hints
What to do if …
Text messages
Display messagePossible cause/consequencePossible solution
ABSABS not
available
differential
lockedYou have engaged the differential locks.The ABS switches on again after the
differential locks have been disen-
gaged.
ABS, ESP
inoperative
See
Operator’s
ManualThe ABS has detected a malfunction and
has switched off.
The ESP
®, BAS, EBB and 4-ETS are also
deactivated.
The brake system is still functioning
normally but without the ABS available.
Continue driving with added caution.
Wheels may lock during hard braking,
reducing steering capability.
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.

341 Practical hints
What to do if …
Display messagePossible cause/consequencePossible solution
ESPinoperative
See
Operator’s
ManualThe ESP® has switched off due to a
malfunction or an interruption in the
power supply.
The brake system is still functioning
normally but without the ESP
®, ABS and
BAS available.
If in addition the ABS is malfunctioning,
only partial engine output will be avail-
able.
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.

342 Practical hints
What to do if …
Display messagePossible cause/consequencePossible solution
Tire pressure
displayed
only after
driving for
a few minutesThe tire inflation pressure is being checked.Drive the vehicle for a few minutes.
Tire pressure
monitor
currently
unavailableThe Advanced TPMS is unable to monitor the tire
pressure due to a nearby radio interference source.As soon as the causes for the malfunction are
no longer present, the Advanced TPMS auto-
matically becomes active again after a few
minutes driving.
Tire pressure
monitor
inoperativeThe Advanced TPMS is malfunctioning.Have the Advanced TPMS checked at an
authorized Mercedes-Benz Light Truck Center.
Have the wheel sensors installed by an autho-
rized Mercedes-Benz Light Truck Center.
Warning!G
Do not drive with a flat tire. A flat tire affects
the ability to steer or brake the vehicle.
You may lose control of the vehicle. Contin-
ued driving with a flat tire will cause exces-
sive heat build-up and possibly a fire.

343 Practical hints
What to do if …
Display messagePossible cause/consequencePossible solution
Tire pressure
monitor
inoperative
No wheel
sensorsThere are wheels without appropriate wheel sensors
mounted (e.g. winter tires).Have the Advanced TPMS checked at an
authorized Mercedes-Benz Light Truck Center.
Have the wheel sensors installed at an
authorized Mercedes-Benz Light Truck Center.
Wheel sensor
missingOne or more sensors malfunction (e.g. battery is
empty).
The respective tire is indicated by - - - instead of the
tire inflation pressure in the multifunction display.Have the Advanced TPMS checked at an
authorized Mercedes-Benz Light Truck Center.
Have the appropriate wheel sensors installed at
an authorized Mercedes-Benz Light Truck Cen-
ter.
One or more wheels without appropriate wheel sen-
sors mounted (e.g. spare tire).
The respective tire is indicated by - - - instead of the
tire inflation pressure in the multifunction display.Have the Advanced TPMS checked at an
authorized Mercedes-Benz Light Truck Center.
Have the appropriate wheel sensors installed at
an authorized Mercedes-Benz Light Truck Cen-
ter.
Warning!G
Do not drive with a flat tire. A flat tire affects
the ability to steer or brake the vehicle.
You may lose control of the vehicle. Contin-
ued driving with a flat tire will cause exces-
sive heat build-up and possibly a fire.

344 Practical hints
What to do if …
Symbol messages
Display symbolDisplay messagePossible cause/consequencePossible solution
#The battery is no longer charging.
Possible causes:

alternator malfunctioning

broken poly-V-belt
Stop the vehicle in a safe location or as soon
as it is safe to do so.
Apply the parking brake (page 62).
Turn off the engine.
Check the poly-V-belt.
If it is broken:
Do not continue to drive.
Otherwise, the engine will overheat due to an
inoperative water pump which may result in
damage to the engine.
Contact an authorized Mercedes-Benz Light
Truck Center.
If it is in order:
Contact an authorized Mercedes-Benz Light
Truck Center immediately.

346 Practical hints
What to do if …
Display symbolDisplay messagePossible cause/consequencePossible solution
3Check brake
fluid levelThere is insufficient brake fluid in the
reservoir.Risk of accident!
Carefully stop the vehicle in a safe location or
as soon as it is safe to do so.
Apply the parking brake (page 62).
Do not drive any further.
Contact an authorized Mercedes-Benz Light
Truck Center.
Do not add brake fluid! This will not solve the
problem.
Warning!G
Driving with the message Check brake
fluid level
displayed can result in an
accident. Have your brake system checked
immediately.
Do not add brake fluid before checking the
brake system. Overfilling the brake fluid res-
ervoir can result in spilling brake fluid on hot
engine parts and the brake fluid catching
fire. You can be seriously burned.
!If you find that the brake fluid in the brake
fluid reservoir has fallen to the minimum mark or
below, have the brake system checked for brake
pad thickness and leaks.