warning light MERCEDES-BENZ G55AMG 2008 W463 Repair Manual

310 Operation
Winter driving
Block heater (Canada only)
The engine is equipped with a block
heater.
The electrical cable may be installed at an
authorized Mercedes-Benz Light Truck
Center.
Snow chains
Snow chains should only be driven on
snow-covered roads at speeds not to
exceed 30 mph (50 km/h). Remove chains
as soon as possible when driving on roads
without snow.Please observe the following guidelines
when using snow chains:

Use of snow chains is not permissible
with all wheel/tire combinations
(
page 415).

Snow chains should only be used on
the rear wheels. Follow the manufac-
turer’s mounting instructions.

Only use snow chains that are
approved by Mercedes-Benz. Any
authorized Mercedes
-Benz Light Truck
Center will be glad to advise you on this
subject.

Use of snow chains may be prohibited
depending on location. Always check
local and state laws before installing
snow chains.
Warning!G
If you use your spare tire when winter tires
are fitted on the other wheels, be aware that
the difference in tire characteristics may
very well impair turn ing stability and that
overall driving stability may be reduced.
Adapt your driving style accordingly.
Have the spare tire replaced with a winter
tire at the nearest authorized
Mercedes-Benz Light Truck Center.
iWhen driving with snow chains, you may
wish to deactivate the ESP® (page 91) before
setting the vehicle in motion. This will improve
the vehicle’s traction.
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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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321
Operation
Vehicle care
Hard plastic trim items
Use Mercedes-Benz approved Interior
Care, a soft, lint-free cloth and apply
with light pressure.
Steering wheel and gear selector lever
Wipe with a damp cloth and dry
thoroughly or clean with
Mercedes-Benz approved Leather
Care.
Carpets
Use Mercedes-Benz approved Carpet
and Fabric Care for cleaning the
carpets.
Headliner
Use a soft bristle brush or a
dry-shampoo cleaner in case of
excessive dirt. Seat belts
Only use clear, lukewarm water and
soap.
!Do not use oil, wax or scouring agents on
these parts.
Never apply strong force and only use a soft,
non-scratching cloth when cleaning the surface.
Do not attempt to wipe the surface with a dry
cloth or sponge.
Otherwise you may scratch or damage the
surface.
!Never apply strong force and only use a soft,
non-scratching cloth when cleaning the surface.
Do not attempt to wipe the surface with a dry
cloth or sponge.
Otherwise you may scratch or damage the
surface.
!The seat belts must not be treated with
chemical cleaning agents. Do not dry the seat
belts at temperatures above 176°F (80°C) or in
direct sunlight.
Warning!G
Do not bleach or dye seat belts as this may
severely weaken them. In a crash they may
not be able to provide adequate protection.
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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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330 Practical hints
What to do if …
ProblemPossible cause/consequenceSuggested solution
vThe yellow ESP® warning lamp
comes on and remains 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.
Read and observe messages in the
multifunction display (
page 336).
The ESP® has been switched off with the
ESP® switch or has switched off due to a
malfunction.
Risk of accident!
When the ESP
® is switched off, it will not
stabilize the vehicle if the system recognizes
that the vehicle starts to skid or that a wheel
is spinning.
The cruise control is deactivated and cannot
be switched on.
Switch the ESP® back on (page 94).
Exceptions: (
page 93).
If leaving the ESP® switched off, adapt
your speed and driving to the prevail-
ing road and weather conditions.
If the ESP
® cannot be switched on:
Read and observe messages in the
multifunction display (
page 336).
Continue driving with added caution.
Adapt your speed and driving to the
prevailing road and weather condi-
tions.
Have the system checked at an
authorized Merc edes-Benz Light
Truck Center as soon as possible.
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332 Practical hints
What to do if …
ProblemPossible cause/consequenceSuggested solution
1The red SRS indicator lamp
comes on while driving.There is a malfunction in the restraint
systems. The air bags or Emergency
Tensioning Devices (ETDs) might deploy
unexpectedly or may not deploy in an
accident.Drive with added caution to the nearest
authorized Mercedes-Benz Light Truck
Center and have the system checked.
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 co ntact an authorized
Mercedes-Benz Light Truck Center
immediately to have the system checked;
otherwise the SRS may not deploy when
needed in an accident, which could result in
serious or fatal injury, or it might deploy
unexpectedly and unnecessarily which
could also result in an accident and/or
injury to you or to others.
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336 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
button j,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
button j,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, wh ere a malfunction is
indicated, addressed as soon as possible at
an authorized Mercedes-Benz Light Truck
Center.
Failure to repair cond ition noted may cause
damage not covered by the Mercedes-Benz
Limited Warranty, or result in property
damage or pers onal injury.
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337
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 338)

Symbol messages (page 342)
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. Co ntact 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.
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340 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.
Warning!G
Follow recommend tire inflation pressures.
Do not underinflate tires. Underinflated tires
wear excessively and/or unevenly, adverse-
ly affect handling and fuel economy, and are
more likely to fail from being overheated.
Do not overinflate tires. Overinflated tires
can adversely affect handling and ride com-
fort, wear unevenly, in crease stopping dis-
tance, and result in sudden deflation
(blowout) because they are more likely to
become punctured or damaged by road de-
bris, potholes etc.
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