2006 MERCEDES-BENZ G55AMG warning light

299 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 ap-
pear in the multifunction display.
For your convenience the messages are
divided into two sections:

Text messages (page 300)

Symbol messages (page 304)
Warning!G
No messages will be displayed if either the
instrument cluster or the multifunction dis-
play is inoperative. Systems that have a sig-
nificant influence on handling performance
may not be functioning.
Contact your nearest authorized
Mercedes-Benz Light Truck Center.
i
Switching on ignition (page 35),
causes all instrument cluster lamps
(except high beam headlamp indicator
lamp and turn signal indicator lamps
unless activated) as well as the multi-
function display to come on. Make sure
the lamps and multifunction display are
all in working order before starting your
journey.

305 Practical hints
What to do if …
Display symbolDisplay messagePossible causePossible solution
#UNDERVOLTAGE
SWITCH CONSUMERS OFF!The battery has insufficient voltage.Have the battery checked at a ser-
vice station.
2BRAKE WEAR
VISIT WORKSHOP!The brake pads have reached their
wear limit.Have the brake pads replaced as
soon as possible.
3 BRAKE FLUID
VISIT WORKSHOP!There is insufficient brake fluid in the
reservoir.Risk of accident! Stop the vehicle
and notify an authorized
Mercedes-Benz Light Truck Center.
Do not add brake fluid! This will not
solve the problem.
Warning!G
Driving with the message BRAKE FLUID
VISIT WORKSHOP
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.
!
Brake pad thickness must be visually
checked by a qualified technician at the
intervals specified in the Maintenance
Booklet.

307 Practical hints
What to do if …
Display symbolDisplay messagePossible causePossible solution
B COOLANT
CHECK LEVEL!The coolant level is too low.Add coolant (page 248).
If you have to add coolant frequently,
have the cooling system checked by
an authorized Mercedes-Benz Light
Truck Center.
Warning!G
Do not spill antifreeze on hot engine parts.
Antifreeze contains ethylene glycol which
may burn if it comes into contact with hot
engine parts. You could be seriously burned.
!
Do not ignore the low engine coolant
level warning. Extended driving with
the message and symbol displayed
may cause serious engine damage not
covered by the Mercedes-Benz Limited
Warranty.
Do not drive without sufficient amount
of coolant in the cooling system. The
engine will overheat causing serious
engine damage.
Observe the coolant temperature dis-
play (
page 120).

319 Practical hints
What to do if …
Display symbolDisplay messagePossible causePossible solution
1RESTRAINT SYSTEM
SERVICEThe system is malfunctioning. The air-
bags or emergency tensioning device
(ETD) could deploy unexpectedly or fail to
activate in an accident.Drive with added caution to the near-
est authorized Mercedes-Benz Light
Truck Center.
RESTRAINT SYSTEM
DRIVE TO WORKSHOP!The system is malfunctioning. The air-
bags or emergency tensioning device
(ETD) could deploy unexpectedly or fail to
activate in an accident.Drive with added caution to the near-
est authorized Mercedes-Benz Light
Truck Center.
Warning!G
In the event a malfunction of the SRS is indi-
cated as outlined above, the SRS may not be
operational.
For your safety, we strongly recommend
that you visit an authorized Mercedes-Benz
Light Truck Center immediately to have the
system checked.
Otherwise the SRS may not be activated
when needed in an accident, which could re-
sult in serious or fatal injury, or it might de-
ploy unexpectedly and unnecessarily which
could also result in injury.

320 Practical hints
What to do if …
Display symbolDisplay messagePossible causePossible solution
DRIVE TO WORKSHOP!The seat belt system is malfunctioning.Visit an authorized Mercedes-Benz
Light Truck Center as soon as
possible.
§TC IN NEUTRALNo gear has been selected in the transfer
case, it is in NEUTRAL.Engage transfer case to gear position
HIGH or LOW (
page 157).
Warning!G
If the transfer case is in NEUTRAL, the
Pposition of the transmission will not hold
the vehicle. The parking brake must be ap-
plied to hold vehicle in place.

331 Practical hints
Brush guard*
Brush guard*
Warning!G
The brush guard is designed solely to en-
hance the appearance of the vehicle and
help protect grille and headlights from minor
mishaps, either on- or off-road. Since the
safety characteristics are limited in the
event of an accident, brush guards are not
intended to prevent injury or damage in the
event of an accident. Also check state and
local regulations on installation and use.
Raise and lower brush guard in an open
space with plenty of room.
To help prevent personal injury when open-
ing or closing the brush guard, use extreme
caution not to trap hands or feet.
The brush guard must be in raised and
locked position while driving.
i
Only lower brush guard to clean head
lamps or to replace bulbs.

333 Practical hints
Replacing SmartKey batteries
Replacing SmartKey batteries
If the batteries in the SmartKey are dis-
charged, the vehicle can no longer be
locked or unlocked. It is recommended to
have the batteries replaced at an autho-
rized Mercedes-Benz Light Truck Center.Batteries contain materials that can harm
the environment if disposed of improperly.
Recycling of batteries is the preferred
method of disposal. Many states require
sellers of batteries to accept old batteries
for recycling.
Warning!G
Keep the batteries out of reach of children.
If a battery is swallowed, seek medical help
immediately.
i
When inserting the batteries, make
sure they are clean and free of lint.
i
When replacing batteries, always re-
place both batteries.
The required replacement batteries are
available at any Mercedes-Benz Light
Truck Center.

337 Practical hints
Replacing bulbs
Notes on bulb replacement

Use only 12 volt bulbs of the same type
and with the specified watt rating.

Switch lights off before changing a bulb
to prevent short circuits.

Always use a clean lint-free cloth when
handling bulbs.

Your hands should be dry and free of oil
and grease.

If the newly installed bulb does not
come on, visit an authorized
Mercedes-Benz Light Truck Center.
Have the LEDs for the following lamps re-
placed by an authorized Mercedes-Benz
Light Truck Center.

Additional turn signals in the exterior
rear view mirrors

High mounted brake lamp

Lamps in the exterior rear view mirrors
Warning!G
Bulbs and bulb sockets can be very hot. Al-
low the lamp to cool down before changing
a bulb.
Keep bulbs out of reach of children.
Halogen lamps contain pressurized gas.
A bulb can explode if you:

touch or move it when hot

drop the bulb

scratch the bulb
Wear eye and hand protection.
i
Have the headlamp adjustment
checked regularly by a Mercedes-Benz
Light Truck Center.
Do not turn the headlamp adjusting
screws. If the adjusting screws are
turned, the headlamp adjustment must
be checked by a Mercedes-Benz Light
Truck Center.