2008 MERCEDES-BENZ G55AMG warning light

398 Practical hints
Jump starting
Make sure the two vehicles do not
touch.
Apply the parking brake (page 62).
Move the gear selector lever to park
positionP.
Turn off all electrical consumers.
Open the hood (page 267). The jump-start terminals are located on
the driver’s side of the engine compart-
ment.
1 Cover
2 Positive (+) terminal
3 Negative (-) terminal Open cover 1 of the positive terminal
of both vehicles.
Connect positive terminal 2 and the
positive terminal of the charged battery
with the jumper cable. Clamp the cable
to the charged battery first.
Start the engine of the vehicle with the
charged battery and run at idle speed.
Connect negative terminal 3 and the
negative terminal of the charged
battery with the jumper cable. Clamp
the cable to the charged battery first.
Start the engine of the disabled
vehicle.
You can now turn on the electrical con-
sumers. Do not switch on the headlamps
under any circumstances.
Remove the jumper cables first from
the negative terminals on each battery
and then from the positive terminals on
each battery.
You can now switch on the headlamps.
Have the battery checked at the
nearest authorized Mercedes-Benz
Light Truck Center.
Warning!G
Keep flames or sparks away from battery.
Do not smoke.
Observe all safety inst ructions and precau-
tions when handling automotive batteries
(
page 394).
!Never invert the terminal connections!
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403
Practical hints
Fuses
 Fuses
The electrical fuses in your vehicle serve to
switch off malfunctioning power circuits.
If a fuse is blown, the components and
systems secured by that fuse will stop
operating. If a newly inserted fuse blows again, have
the cause determined and rectified at an
authorized Mercedes-Benz Light Truck
Center.
The following aids are available to help you
replace fuses.

Fuse chart
The fuse chart explains the fuse
allocation and fuse amperages.
The fuse chart is located in the main
fuse box in the passenger compart-
ment (
page 404).

Spare fuses
The spare fuses are located in the main
fuse box in the passenger compart-
ment (
page 404).

Fuse extractor
The fuse extractor is located in the
vehicle tool kit in the rear footwell
(
page 364).The electrical fuses are located in different
fuse boxes:

in the passenger compartment on the
driver’s side (
page 404)

in the front passenger footwell
(
page 404)

in the middle tunnel (page 405)

in the battery box (page 406)
Before replacing fuses:
Apply parking brake (page 62).
Make sure the gear selector lever is set
to park position P (
page 162).
Turn off all electrical consumers.
Turn off the engine (page 64).
Remove the SmartKey from the starter
switch.
Warning!G
Only use fuses approved by Mercedes-Benz
with the specified amperage for the system
in question and do not attempt to repair or
bridge a blown fuse. Using other than
approved fuses or using repaired or bridged
fuses may cause an overload leading to a
fire, and/or cause damage to electrical
components and/or systems. Have the
cause determined and remedied at an
authorized Mercedes-Benz Light Truck
Center.
iA blown fuse must be replaced by an
appropriate spare fuse (recognizable by its color
or the fuse rating given on the fuse) of the
amperage recommended in the fuse chart. Any
Mercedes-Light Truck Center will be glad to
advise you on this subject.
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405
Practical hints
Fuses
5
Fuse box
6 Mounting screw
Unscrew mounting screws 6.
Fold fuse box 5 downward in direction
of the arrow.
Fuse box in middle tunnel
Removing front end stops
Open the front passenger door.
Front end stop on the right seat rail, left
seat rail laterally reversed
1 Front end stop
2 Spacing
Remove both front end stops 1 of the
front passenger seat tracks using a
screwdriver.
Move front passenger seat fully
forward.
iTo make changing th e fuses easier, fuse
box 5 can be folded down slightly.
iWe recommend having the fuses changed at
a Mercedes-Benz Light Truck Center.
!When reinstalling fron t passenger seat track
stops, place end stops in correct position. For
your safety, maintain proper spacing 2.
Warning!G
Do not drive the vehicle when the front end
stops are not correctly installed. Failure to
reinstall stops as indicated may result in
serious injury in certain frontal crashes.
Adjust the front passenger seat as far as
possible rearward from the dashboard when
the seat is occupied. Comply with informa-
tion on occupant safety (
page 68).
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420 Technical data
Fuels, coolants, lubricants, etc.
Capacities
Vehicle components and their respective
lubricants must match.Therefore only use
products tested and approved by
Mercedes-Benz.
Please refer to the Factory Approved
Service Products pamphlet (USA only), or
inquire at an authorized Mercedes-Benz
Light Truck Center.
Warning!G
Comply with all valid regulations with
respect to handling, storing and disposing
of service fluids. Otherwise you could
endanger persons or the environment.
Keep service fluids out of the reach of
children.
For health reasons, you should prevent
service fluids from coming into direct
contact with your skin or clothing.
If a service fluid is swallowed, contact a
physician immediately.
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423
Technical data
Fuels, coolants, lubricants, etc.
Engine oils
Engine oils are specifically tested for their
suitability in our engines and durability for
our service intervals. Therefore, only use
approved engine oils and oil filters
required for vehicles with Maintenance
System (U.S. vehicles) or FSS (Canada
vehicles). For a listing of approved engine
oils and oil filters, refer to the Factory
Approved Service Pr
oducts pamphlet
(USA only), or contact an authorized
Mercedes-Benz Light Truck Center.
Engine oil additives
Air conditioning refrigerant
R-134a (HFC) refrigerant and special PAG
lubricating oil are used in the air condition-
ing system.
Brake fluid
Only brake fluid approved by
Mercedes-Benz is recommended. Any
authorized Mercedes-Benz Light Truck
Center will provide you with additional
information.
!Using engine oils and oil filters of specifi-
cation other than those expressly required for
the Maintenance System (U.S. vehicles) or FSS
(Canada vehicles), or changing of oil and oil filter
at change intervals longer than those called for
by the Maintenance System (U.S. vehicles) or
FSS (Canada vehicles) will result in engine
damage not covered by the Mercedes-Benz
Limited Warranty. Please follow Maintenance System
(U.S. vehicles) or FSS (Canada vehicles)
recommendations for scheduled oil changes.
Failure to do so will result in engine damage not
covered by the Mercedes-Benz Limited
Warranty.
!Do not blend oil additives with engine oil.
They may damage the engine.
Damage or malfunctions resulting from blending
oil additives are not covered by the
Mercedes-Benz Limited Warranty.
!Never use R-12 (CFC) or mineral-based
lubricating oil. Otherwise damage to the system
will occur.
Warning!G
During vehicle operation, the boiling point of
the brake fluid is continuously reduced
through the absorption of moisture from the
atmosphere. Under extremely strenuous
operating conditions, this moisture content
can lead to the formation of bubbles in the
system, thus reducing the system’s
efficiency.
Therefore, the brake fluid must be replaced
regularly. Refer to your vehicle’s
Maintenance Booklet for replacement
interval.
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424 Technical data
Fuels, coolants, lubricants, etc.
Premium unleaded gasolineFuel requirements
Only use premium unleaded fuel:

The octane number (posted at the
pump) must be 91 min. It is an average
of both the Research Octane Number
(RON) and the Motor Octane Number
(MON): (RON+MON)/2. This is also
known as the ANTI-KNOCK INDEX.
Unleaded gasoline containing oxygenates
such as ethanol, IPA, IBA and TBA can be
used provided the ratio of any one of these
oxygenates to gasoline does not
exceed 10%; MTBE mu st not exceed 15%.
The ratio of methanol to gasoline must not
exceed 3% plus additional cosolvents.
Using mixtures of ethanol and methanol is
not allowed. Gasohol, which contains 10%
ethanol and 90% unleaded gasoline, can
be used.
These blends must also meet all other fuel
requirements, such as resistance to spark
knock, boiling range, vapor pressure, etc.Warning!G
Gasoline is highly flam mable and poisonous.
It burns violently and can cause serious
personal injury.
Never allow sparks, flame or smoking
materials near gasoline!
Turn off the engine before refueling.
Whenever you are around gasoline, avoid
inhaling fumes and skin or clothing contact,
extinguish all smoking materials.
Direct skin contact with fuels and the
inhalation of fuel vapors are damaging to
your health.
!To maintain the engi ne’s durability and
performance, premium unleaded gasoline must
be used. If premium unleaded gasoline is not
available and low octane fuel is used, follow
these precautions:

Have the fuel tank only partially filled with
unleaded regular gasoline and fill up with
premium unleaded gasoline as soon as
possible.

Avoid full throttle driving and abrupt
acceleration.

Do not exceed an engine speed of 3000 rpm
if the vehicle is loaded with a light load such
as two persons and no luggage.

Do not exceed 2/3 of maximum accelerator
pedal position if the vehicle is fully loaded or
operating in mountainous terrain.
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431
Index
Batteries
SmartKey (replacing) 374
Batteries, SmartKey Check lamp 103
Checking 103
Battery box Fuse box in 406
Battery discharged Jump starting 397
Battery, vehicle 394 Charging 396
Disconnecting 396
Messages in display 342–343
Reconnecting 396
Reinstalling 396
Removing 396
Bead 304
Block heater (Canada only) 310
Blocking rear door window operation 85
B-pillar 410
Brake fluid 266, 423 Message in display 344
Brake lamp bulbs, left and right 376
Brake lamp, high mounted 376
Brake lamps Messages in display 352 Brake pads
Message in display 345
Brakes 246 Warning lamp 326–327
Break-in period 244
Brush guard 373 Lowering 373
Raising and securing 373
Bulbs, replacing Additional turn signals 376
Backup lamps 376, 384
Brake lamps 376, 384
Front fog lamps 376, 380
Front lamps 376
Front turn signal lamps 376, 381
High beam lamps 376
High mounted brake lamp 376
License plate lamps 376, 385
Locator lighting lamps 376
Low beam lamps 376
Parking lamps 376, 378 Rear fog lamp 376, 384
Rear lamps 376
Rear turn signal lamps 376
Side marker lamps 376, 382
Standing lamps 376, 378
Tail lamp assemblies 376
Tail lamp unit 383
C
Call priority, Tele Aid 235
Calling up Maintenance service indicator display 313
Range (distance to empty) 158
Capacities Fuels, coolants, lubricants, etc. 420
Cargo area see Cargo compartment
Cargo compartment Expanding 206
Tailgate 105
Tie-down rings 209
Cargo compartment cover blind 214 Installing 214
Removing 214
Rolling out 214
Rolling up 214
Cargo compartment lamps 127
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437
Index
G
Garage door opener 32, 236
Gasoline see Fuel
Gasoline additives 425
GAWR 305
Gear range Automatic transmission 167
Shifting into optimal 169
Transfer case 170
Gear range limit Canceling 169
Gear selector lever 27, 162, 371 Cleaning 321
Lock 54
Position 164
Position (automatic transmission) 27, 163
Unlocking manually 371
Global Locking 102
Unlocking 102
Glove box 25, 215 Closing 215
Locking and unlocking separately 216
Opening 215 Good visibility 177
Gross Axle Weight Rating see GAWR
Gross Trailer Weight see GTW
Gross Vehicle Weight Rating see GVWR
Gross Vehicle Weight see GVW
GTW 305
GVW 305
GVWR 305
H
Hard plastic trim items, cleaning 321
Hazard warning flasher 124
Switching off 124
Switching on 124
Head restraints 108 Power seats 43
Headlamp cleaning system 275
Headlamps Automatic control 118
Cleaning 318
Cleaning system 177, 275
Switching off 64
Switching on 56
Washer fluid 428
Washer system 428
Headlight switch-off delay see Delayed switch-off, exterior lamps Headliner
Cleaning 321
Heated seats 112
Heated steering wheel 225
Height adjustment Head restraints 43
Seat belt outlet 52
Steering wheel 44
High beam flasher 57, 122
High beam headlamps Messages in display 353
Replacing bulbs 376
Switching on 122
High mounted brake lamp 376 Message in display 352
Hood 267 Closing 269
Message in display 351
Opening 267
Hydroplaning 249
I
Identification labels 410 Certification label 410
Ignition Switching on 54
Ignition (Position in starter switch) 39
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