2008 MERCEDES-BENZ G55AMG brake light

265
Operation
At the gas station
Only fill your tank until the filler nozzle
unit cuts out –
do not top off or
overfill .
Replace fuel filler cap 2 by turning it
clockwise until it audibly engages.
Close fuel filler flap 1.
You should hear the latch close shut.
Check regularly and before a long trip
For information on quantities and require-
ments of operating agents, see “Fuels,
coolants, lubricants, etc.” (
page 420).
Open the hood (page 267).
G 500
1 Coolant
2 Brake fluid
Warning!G
Overfilling of the fuel tank may create pres-
sure in the system which could cause a gas
discharge. This could cause the gas to spray
back out when removing the fuel pump noz-
zle, which could caus e personal injury.
!When refueling the vehicle, make certain
that no gasoline comes into contact with the rear
side marker to prevent damaging the lens.
iMake sure to close the fuel filler flap before
locking your vehicle as the flap locking pin
prevents closing after you have locked the
vehicle.
iLeaving the engine running and the fuel cap
open can cause the ? malfunction indicator
lamp (USA only) or the ± malfunction indica-
tor lamp (Canada only) comes on.
For more information, see “Practical hints”
(
page 328).
iOnly use premium unleaded gasoline with a
minimum Posted Octane Rating of 91 (average of
96 RON/86 MON). Information on gasoline
quality can normally be found on the fuel pump.
Please contact gas station personnel in case la-
bels on the pump cannot be found.
For more information on gasoline, see “Premium
unleaded gasoline” (
page 424), refer to the
Factory Approved Service Products pamphlet
(USA only), or contact an authorized
Mercedes-Benz Light Truck Center.
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266 Operation
At the gas station
G55AMG
1Coolant
2 Brake fluid Brake fluid
Coolant
For normal replenishing, use water
(potable water quality).
For more information, see “Coolant level”
(
page 274) and see “Fuels, coolants, lu-
bricants, etc.” (
page 420). Engine oil level
For more information on engine oil, see
“Engine oil” (
page 269).
Windshield/rear window washer sys-
tem and headlamp cleaning system
For more information on refilling the
washer reservoir, see “Windshield/rear
window washer syst em and headlamp
cleaning system” (
page 275).
Vehicle lighting
Check function and cleanliness.
For information on replacing light bulbs,
see “Replacing bulbs” (
page 375).
For more information, see “Exterior lamp
switch” (
page 117).
Tire inflation pressure
For more information, see “Checking tire
inflation pressure” (
page 288).
!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. Notify 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 326) and see “Brake fluid”
(
page 423).
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277
Operation
Tires and wheels
 Tires and wheels
Contact an authorized Mercedes-Benz
Light Truck Center for information on test-
ed and recommended rims and tires for
summer and winter operation. They can
also offer advice concerning tire service
and purchase.Important guidelines

Only use sets of tires and rims of the
same type and make.

Tires must be of the correct size for the
rim.

Break in new tires for approximately
60 miles (100 km) at moderate
speeds.

Regularly check the tires and rims for
damage. Dented or bent rims can
cause tire inflation pressure loss and
damage to the tire beads.

If vehicle is heavily loaded, check tire
inflation pressure and correct as
required.

Do not allow your tires to wear down
too far. Adhesion properties on wet
roads are sharply reduced at tread
depths of less than
1/8in (3 mm).

When replacing individual tires, you
should mount new tires on the front
wheels first (on vehicles with
same-sized wheels all around).
Warning!G
Replace rims or tires with the same designa-
tion, manufacturer and type as shown on the
original part. See an authorized
Mercedes-Benz Light Truck Center for fur-
ther information. If incorrectly sized rims
and tires are mounted:

The wheel brakes or suspension
components can be damaged.

The operating clearance of the wheels
and the tires may no longer be correct.
Warning!G
Worn, old tires can cause accidents. If the
tire tread is badly worn, or if the tires have
sustained damage, replace them.
When replacing rims, only use genuine
Mercedes-Benz wheel bo lts specified for the
particular rim type. Failure to do so can
result in the bolts loos ening and possibly an
accident.
Retreaded tires are not tested or recom-
mended by Mercedes-Benz, since previous
damage cannot always be recognized on
retreads. The operating safety of the vehicle
cannot be assured when such tires are used.
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320 Operation
Vehicle care
Clean the wiper blade inserts with a
clean cloth and detergent solution.
Use a soft, clean cloth and a mild
window cleaning solution on all outside
and inside glass surfaces.
An automotive glass cleaner is recom-
mended.Light alloy wheels
If possible, clean wheels once a week.Use Mercedes-Benz approved Wheel
Care, a soft bristle brush and a strong
spray of water for cleaning the light
alloy wheels.
Plastic and rubber parts
Use a gentle dishwashing detergent or
mild detergent for delicate fabrics as a
washing solution.
Wipe with a cloth moistened in a
lukewarm solution.
The surface may temporarily change
color. If this is the case, wait for it to
dry.
!Fold the windshield wiper arms back onto
the windshield before turning the SmartKey in
the starter switch.
Hold on to the wiper when folding the wiper arm
back. If released, the force of the impact from
the tensioning spring could crack the windshield.
!To clean the window interior, do not use a
dry cloth, abrasives, solvents or cleaners con-
taining solvents. Do not touch the inside of the
front, rear or side windows with hard objects
such as an ice scraper or ring. Doing so may
damage the windows.
!Only use acid-free cleaning materials. Acid
may cause corrosion or damage the clear coat.
!The vehicle should not be parked for an
extended period of time immediately after it has
been cleaned, especially not after the wheel rims
have been cleaned with wheel rim cleaner.
Wheel rim cleaners can lead to increased
corrosion of the brake disks and brake pads.
Non-approved wheel cleaners may also damage
the wheel paint if the car is not driven after
cleaning. Therefore, the vehicle’s brake system
should always be warmed-up before it is parked
after cleaning. To do so, please drive your vehicle
for several minutes to allow the brakes to dry.
When applying Mercedes-Benz approved Tire
Care and Mercedes-Benz approved Wheel Care
products, take care not to spray them on the
brake disks.
Warning!G
Do not use cleaners or cockpit care sprays
containing solvents to clean the cockpit or
the steering wheel. Cleaners containing
solvents will make the surface porous and
vehicle occupants could suffer serious
injuries from plastic parts coming loose in
the event of air bag deployment.

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324 Practical hints
What 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
replaced if necessary.
ProblemPossible cause/consequenceSuggested solution
-The yellow ABS indicator lamp
comes on while driving.You have engaged the di
fferential 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 multi-
function display).
The brake system is still functioning normally
but without the ABS available.
If the ABS control unit is malfunctioning,
other systems such as the navigation system
or Rear Parking Assist * may also be malfunc-
tioning.
Continue driving with added caution.
Wheels may 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
increases the risk of an accident.
Read and observe messages in the
multifunction display (
page 336).
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326 Practical hints
What to do if …
ProblemPossible cause/consequenceSuggested solution
;(USA only)
3(Canada only)
The red brake warning lamp
comes on while driving.There 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.
Read and observe messages in the
multifunction display (
page 336).
Warning!G
Driving with the brake warning lamp
illuminated can result in an accident. Have
your brake system checked immediately if
the brake warning lamp stays on.
Do not add brake fluid before checking the
brake system. Overfilling the brake fluid
reservoir can result in spilling brake fluid on
hot engine parts and the brake fluid catch-
ing fire. You could 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.
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327
Practical hints
What to do if …
ProblemPossible cause/consequenceSuggested solution
;(USA only)
3(Canada only)
The red brake warning lamp
comes on while driving and
an acoustic warning sounds.You are driving with the parking
brake set.Release the parking brake
(
page 55).
;(USA only)
3(Canada only)
-
The red brake warning lamp
and the yellow ABS indicator
lamp come on when the
engine is running and an
acoustic warning sounds for
approximately 5 seconds.The EBB (page 91) has detected a
malfunction and has switched off.Continue driving with added caution.
Have the system checked at an autho-
rized Mercedes-Benz Light Truck
Center as soon as possible.
Failure to follow these instructions
increases the risk of accidents.
Warning!G
Driving with the brake warning lamp
illuminated can result in an accident. Have
your brake system checked immediately if
the brake warning lamp stays on.
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338 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.
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