2008 MERCEDES-BENZ G55AMG ECU

385
Practical hints
Replacing bulbs
License plate lamp bulb
1 Securing screw
2 License plate lamp lens (with bulb
socket)
Loosen and remove securing
screws 1.
Remove license plate lamp lens 2. 3
Tubular bulb
Replace tubular bulb 3.
Reinstall license plate lamp lens 2.
Install and tighten securing screws 1. High mounted brake lamp
The high mounted brake lamp has LEDs.
If a malfunction occu
rs or LEDs fail to
function, the brake lamp unit must be
replaced. Have the brake lamp unit
replaced at an authorized Mercedes-Benz
Light Truck Center.
iDo not overtighten securing screws 1.
Otherwise license plate lamp lens 2 could be
damaged.
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393
Practical hints
Flat tire
1
-5 Wheel bolts
Tighten the five wheel bolts evenly,
following the diagonal sequence illus-
trated ( 1 to 5), until all wheel bolts
are tight. Observe a tightening torque
of 96 lb-ft (130 Nm).
Disassemble the pump handle
(
page 390).
Put the pump handle and the wheel
wrench back into the vehicle tool kit.
Store the vehicle tool kit in the
designated storage compartment
(
page 364).
Press the jack piston in again and close
the lowering screw (
page 390).
Store the jack in the designated
storage compartment (
page 365).
After changing the wheel, secure the
damaged wheel on the spare wheel
carrier (
page 367). Make sure the
wheel cannot come loose.
Check the tire inflation pressure and
correct it if necessary.
Follow recommended cold tire inflation
pressures listed on the Tire and
Loading Information placard on the
driver’s door B-pillar (
page 280).
Warning!G
Have the tightening torque checked after
changing a wheel. The wheels could come
loose if they are not tightened to a torque of
96 lb-ft (130 Nm).
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396 Practical hints
Battery
Disconnecting, removing, reinstalling
and reconnecting the battery
Disconnecting, removing, reinstalling and
reconnecting the battery is a complicated
and technically demanding procedure that
also requires safety precautions to avoid
the risk of injury. We strongly recommend
that it should be performed by a qualified
technician only. If it is necessary to work
on the battery, contac t a local authorized
Mercedes-Benz Light Truck Center or call
our Customer Assistance Center at
1-800-FOR-MERCedes (1-800-367-6372).
Charging the battery
If the battery is disc harged, the battery can
be charged using the jump-start terminals
located in the engine compartment
(
page 398).
Charge the battery in accordance with
the instructions of the battery charger
manufacturer.
!Never invert the terminal connections!
!The battery, its filler caps and the vent tube
must always be securely installed when the
vehicle is in operation.
Warning!G
Never charge a battery while still installed in
the vehicle unless th e accessory battery
charge unit* approved by Mercedes-Benz is
being used. Gases may escape during charg-
ing and cause explosions that may result in
paint damage, corrosion or personal injury.
An accessory battery ch arge unit* specially
adapted for Mercedes-Benz vehicles and
tested and approved by Mercedes-Benz is
available, permitting the charging of the
battery in its installe d position. Contact an
authorized Mercedes-Benz Light Truck
Center for information and availability.
Charge battery in acco rdance with the sepa-
rate instructions for the accessory battery
charger*.
iWith a discharged battery

you will no longer be able to turn the
SmartKey in the starter switch

the gear selector lever will remain locked in
park position P
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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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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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439
Index
Lamps in instrument cluster 324
Lamps, exterior
Front 376
Messages in display 352–357
Rear 376
Replacing bulbs for front 378
Replacing bulbs for rear 383
Lamps, indicator and warning ABS 324–325, 327
Battery (SmartKey) 102
Brakes 326–327
check engine 328–329
Engine diagnostics 328–329
ESP
®330–331
Fuel reserve 331
Instrument cluster 324–332
SRS 69, 332
Turn signals 27
Language Setting 149
LATCH child seat anchors 82
Layout of poly-V-belt drive 412
Leather upholstery Cleaning 322 License plate lamps
Messages in display 354
Replacing bulbs 376, 385
Lifting Vehicle 389
Light alloy wheels Cleaning 320
Technical data 415, 416
Light sensor Message in display 352
Lighter see Cigarette lighter
Lighting 117 Automatic headlamp mode 118
Combination switch 122
Daytime running lamp mode 119
Exterior lamp switch 117
Front fog lamps 121
High beam flasher 122
High beams 122
Instrument cluster illumination 130
Interior, front 125
Interior, rear 126
Locator lighting 120
Low beams 117
Manual headlamp mode 118
Night security illumination 120 Parking lamps 117
Rear fog lamp 121
Settings (control system) 151
Limiting gear range 168
Limp Home Mode 169
Loading 206 Cargo compartment cover blind 214
Cargo tie-down rings 209
Instructions 208
Partition net* 210
Roof rack 206
Loading terminology 304
Loading the vehicle 280
Locator lighting 120 Setting 152
Locator lighting lamps Replacing bulbs 376
Locking 62, 100 Fuel filler flap 264
Global, SmartKey 102
Vehicle in an emergency 369
Loss of keys 103
Loss of Service and Warranty Information Booklet 409
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441
Index
Mirrors
Activating exterior rear view mirror parking position (Canada only) 178
Adjusting 46
Auto-dimming for rear view mirror 177
Exterior rear view mirrors 46
Interior rear view mirror 46
Storing exterior rear view mirror park- ing position (Canada only) 116
Mobile phone see Telephone*
MON 265
Monitoring reach Rear Parking Assist 201
Mph or km/h in speedometer setting 149
Multicontour seat* 109
Multifunction display 133 Selecting language 149
Multifunction display messages ABS 338
Advanced TPMS 340–341, 359–360
Backup lamp 355
Battery 342–343
Brake fluid 344
Brake lamps 352 Brake pads 345
Coolant 345–348
Cruise control 348
Doors 348
Electronic systems 363
Engine oil 349–350
ESP
®339
Front fog lamps 353
Fuel 363
Fuel filler cap 351
Fuel reserve tank 351
High beam headlamps 353
High mounted brake lamp 352
Hood 351
Key 351
Lamps, exterior 352–357
License plate lamps 354
Light sensor 352
Low beam headlamps 354
Parking brake 345
Parking lamps 354
Rear fog lamp 355
Side marker lamps 353
SRS 358
Tail lamps 355
Tailgate 362 Tele Aid 362
Telephone* 362
Tires 340–341, 359–360
Transfer case 361
Turn signal lamps 356–357
Washer fluid 363
Multifunction steering wheel 28, 134 Buttons 134
N
Navigation system Operating 144
See separate COMAND operating in-structions
Night security illumination 120 Setting 153
Normal occupant weight 305
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446 Index
Service life (tires) 278
Service System see Maintenance
SettingClock 27
Cruise control 198
Daytime running lamp mode 151
Higher speed in cruise control 198
Individual vehicle settings 146
Instrument lighting 130
Interior lighting delayed shut-off 154
Lamps and lighting (control system) 151
Language, multifunction display 149
Locator lighting 152
Lower speed in cruise control 199
Miles/kilometers in speedometer 149
Night security illumination 153
Selective 102
Slower speed in cruise control 199
Speed in cruise control 199
Speedometer display mode 149
Temperature (interior) 185
Units Speedometer 149
Setting current speed 198 Settings
Convenience functions 156
Factory, SmartKey 102
Lighting (control system) 151
Memory function 115
Menus and submenus 135
Resetting all (control system) 146
Settings menu Functions in 146
Individual vehicle settings 146
Submenus 147
Shifting Gear selector lever position 164
Shifting into optimal Gear range 169
Shifting procedure 163
Side marker lamps 376 Messages in display 353
Replacing bulbs 376, 382
Side markers Cleaning 318 Side windows
Automatic opening 193
Cleaning 319
Closing 192
Opening 192
Opening fully 193
Stopping 193
Sidewall 306
Simultaneous wiping and washing Windshield wipers 59
Single wipe 59
SmartKey 100 Locking and unlocking 100
Replacing batteries 374
Unlocking with 38
Snow chains 310
Spare parts see Parts service
Spare wheel 366 Mounting 389
Speed Setting current 198
Speed settings Cruise control 198, 199
Speedometer 27 Setting units 149
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