2005 MERCEDES-BENZ G500 light bulb

237 Operation
At the gas station
G55AMG1Coolant
2Brake fluidCoolant
For normal replenishing, use water (pota-
ble water quality). For more information,
see “Coolant level” (
page 244) and see
“Fuels, coolants, lubricants, etc.”
(
page 374).
Brake fluidEngine oil level
For more information on engine oil, see
“Engine oil” (
page 239).
Tire inflation pressure
For more information, see “Checking tire
inflation pressure” (
page 259).
Vehicle lighting
Check function and cleanliness. For infor-
mation on replacing light bulbs, see “Re-
placing bulbs” (
page 333).
For more information, see “Exterior lamp
switch” (
page 110).
Windshield/rear window washer sys-
tem and headlamp cleaning system
For more information on refilling the reser-
voir, see “Windshield/rear window washer
system and headlamp cleaning system”
(
page 245).
iOpening the hood, see (
page 238).
!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 immediately. Noti-
fy an authorized Mercedes-Benz Light
Truck Center immediately. Do not add
brake fluid as this will not solve the
problem. For more information, see
“Practical hints” (
page 290).

288 Practical hintsWhat to do if …Lamps in instrument clusterGeneral information:
If any of the following lamps in the instru-
ment cluster fails to come on during thebulb self-check when switching on ignition,
have the respective bulb checked and re-
placed if necessary.Problem
Possible cause
Suggested solution
-
The yellow ABS indicator lamp
comes on while driving.
You engaged the differential locks. The ABS,
ESP, BAS, EBB and 4-ETS are switched off.

The driving systems will switch on
again after the differential locks have
been disengaged.
The ABS has detected a malfunction and has
switched off. The ESP, BAS, EBB and 4-ETS
are also switched off (see messages in dis-
play).
If the ABS control unit is malfunctioning, oth-
er systems such as the navigation system or
Rear Parking Assist* may also malfunction.
The brake system is still functioning normally
but without the ABS available.

Continue driving with added caution.
Wheels will lock during hard braking
reducing steering capability.

Have the system checked at an autho-
rized Mercedes-Benz Light Truck
Center as soon as possible.
Failure to follow these instructions in-
creases the risk of an accident.

313 Practical hints
What to do if …
Display symbol
Display message
Possible cause
Possible solution
.
BRAKE LIGHT, R
CHECK LIGHT!

The right brake lamp is malfunctioning.

Visit an authorized Mercedes-Benz
Light Truck Center as soon as
possible.
FRONT FOGLIGHT, L
CHECK LIGHT!

The left front fog lamp is malfunctioning.

Replace the bulb as soon as possible.
FRONT FOGLIGHT, R
CHECK LIGHT!

The right front fog lamp is malfunctioning.

Replace the bulb as soon as possible.
FR. L. PARK. LAMP
CHECK LIGHT!

BACK-UP LIGHT ON!

The left parking lamps are malfunction-
ing. A backup bulb is being used.

Replace the bulb as soon as possible.
FR. R. PARK LAMP
CHECK LIGHT!
BACK-UP LIGHT ON!
The right parking lamps are malfunction-
ing. A backup bulb is being used.

Replace the bulb as soon as possible.
HIGH BEAM, L
CHECK LIGHT!

The left high beam lamp is malfunction-
ing.

Replace the bulb as soon as possible.
HIGH BEAM, R
CHECK LIGHT!

The right high beam lamp is malfunction-
ing.

Replace the bulb as soon as possible.

314 Practical hintsWhat to do if …Display symbol
Display message
Possible cause
Possible solution
.
LIGHT SENSOR
DRIVE TO WORKSHOP!
The lamp sensor is malfunctioning. The
headlamps switch on automatically.

In the control system, set lamp opera-
tion to manual (
page 137).

Switch on headlamps using the
exterior lamp switch (
page 110).

Visit an authorized Mercedes-Benz
Light Truck Center as soon as possi-
ble.
LICENSE PLATE LIGHT, L
CHECK LIGHT!

The left license plate lamp is malfunction-
ing.

Replace the bulb as soon as possible.
LICENSE PLATE LIGHT R
CHECK LIGHT!

The right license plate lamp is malfunc-
tioning.

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

Insert SmartKey in the starter switch.

Switch off the lights (
page 110).
LOW BEAM, L
CHECK LIGHT!
The left low beam lamp is malfunctioning.

Visit an authorized Mercedes-Benz
Light Truck Center as soon as
possible.
LOW BEAM, R
CHECK LIGHT!
The right low beam lamp is malfunction-
ing.

Visit an authorized Mercedes-Benz
Light Truck Center as soon as
possible.

315 Practical hints
What to do if …
Display symbol
Display message
Possible cause
Possible solution
.
MARKER LIGHT, FL
CHECK LIGHT!

The left front side marker lamp is mal-
functioning.

Replace the bulb as soon as possible.
MARKER LIGHT, FR
CHECK LIGHT!

The right front side marker lamp is mal-
functioning.

Replace the bulb as soon as possible.
REAR FOGLIGHT
CHECK LIGHT!

The rear fog lamp is malfunctioning.

Replace the bulb as soon as possible.
REAR FOGLIGHT
TURN OFF

BACK-UP LIGHT ON!
A lamp is malfunctioning. A backup bulb
is being used.

Turn the rear fog lamp off.
REVERSE LIGHT, R
CHECK LIGHT!

The right backup lamp is malfunctioning.

Replace the bulb as soon as possible.
TAIL LIGHT, L
CHECK LIGHT!

BACK-UP LIGHT ON!

The left tail lamp is malfunctioning.
A backup bulb is being used.

Replace the bulb as soon as possible.
TAIL LIGHT, R
CHECK LIGHT!

BACK-UP LIGHT ON!

The right tail lamp is malfunctioning.
A backup bulb is being used.

Replace the bulb as soon as possible.
TURN SIG., LF
CHECK LIGHT!
BACK-UP LIGHT ON!
The left front turn signal lamp is malfunc-
tioning. A backup bulb is being used.

Replace the bulb as soon as possible.

316 Practical hintsWhat to do if …Display symbol
Display message
Possible cause
Possible solution
.
TURN SIG., RF
CHECK LIGHT
!
BACK-UP LIGHT ON!
The right front turn signal lamp is mal-
functioning. A backup bulb is being
used.

Replace the bulb as soon as
possible.
TURN SIG., LR
CHECK LIGHT
!
BACK-UP LIGHT ON!
The left rear turn signal lamp is malfunc-
tioning. A backup bulb is being used.

Replace the bulb as soon as
possible.
TURN SIG., RR
CHECK LIGHT!
BACK-UP LIGHT ON!
The right rear turn signal lamp is mal-
functioning. A backup bulb is being
used.

Replace the bulb as soon as
possible.
VISIT WORKSHOP!
DISPLAY MALFUNCTION
The display for the lamps or the system
is malfunctioning.

Visit an authorized Mercedes-Benz
Light Truck Center as soon as
possible.
TURN SIG. MIRROR, L
CHECK LIGHT!
The left turn signal in the side mirror is
malfunctioning. This message will only
appear if all light emitting diodes have
stopped working.

Visit an authorized Mercedes-Benz
Light Truck Center as soon as
possible.
TURN SIG. MIRROR, L
CHECK LIGHT!
The right turn signal in the side mirror is
malfunctioning. This message will only
appear if all light emitting diodes have
stopped working.

Visit an authorized Mercedes-Benz
Light Truck Center as soon as
possible.

329 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.
iOnly lower brush guard to clean head
lamps or to replace bulbs.

333 Practical hints
Replacing bulbs
Replacing bulbs
Safe vehicle operation depends on proper
exterior lighting and signaling. It is there-
fore essential that all bulbs and lamp as-
semblies are in good working order at all
times.
Correct headlamp adjustment is extremely
important. Have headlamps checked and
readjusted at regular intervals and when a
bulb has been replaced. See an authorized
Mercedes-Benz Light Truck Center for
headlamp adjustment.
iIf the headlamps or front fog lamps are
fogged up on the inside as a result of
high humidity, driving the vehicle a dis-
tance with the lights on should clear up
the fogging.
iBackup bulbs will be brought into use
when lamps malfunction. Observe the
messages in the multifunction display
(page 296).