2004 MERCEDES-BENZ G55AMG park assist

208 OperationDriving instructionsPower assistanceBrakesTo help prevent brake disk corrosion after
driving on wet road surfaces (particularly
salted roads), it is advisable to brake the
vehicle with considerable force prior to
parking. The heat generated serves to dry
the brakes.
If your brake system is normally only sub-
jected to moderate loads, you should occa-
sionally test the effectiveness of the
brakes by applying above-normal braking
pressure at higher speeds. This will also
enhance the grip of the brake pads.If the parking brake is released and the
brake warning lamp in the instrument clus-
ter stays on and there is no audible warn-
ing (EBB), the brake fluid level in the
reservoir is too low.
Brake pad wear or a leak in the system may
be the reason for low brake fluid in the res-
ervoir.
Have the brake system inspected immedi-
ately. Contact an authorized
Mercedes-Benz Light Truck Center.
All checks and service work on the brake
system should be carried out by by quali-
fied technicians only. Contact an autho-
rized Mercedes-Benz Light Truck Center.
Install only brake pads and brake fluid
recommended by Mercedes-Benz.Warning!
G
With the engine not running, there is no
power assistance for the brake and steering
systems. In this case, it is important to keep
in mind that a considerably higher degree of
effort is necessary to brake and steer the ve-
hicle.Warning!
G
After driving in heavy rain for some time
without applying the brakes or through wa-
ter deep enough to wet brake components
or salty road conditions, the first braking ac-
tion may be somewhat reduced and in-
creased pedal pressure may be necessary to
obtain expected braking effect. Maintain a
safe distance from vehicles in front.
Resting your foot on the brake pedal will
cause excessive and premature wear of the
brake pads.
It can also result in the brakes overheating,
thereby significantly reducing their effec-
tiveness. It may not be possible to stop the
vehicle in sufficient time to avoid an acci-
dent.
!Be very careful not to endanger other
road users when you apply the brakes.
Refer to the description of the Brake
Assist System (BAS) (
page 76).

247 Operation
Vehicle care
Cleaning the Rear Parking Assist
sensors*
1Sensor
Use a mild car wash detergent, such as
Mercedes-Benz approved Car Sham-
poo, with plenty of water to clean
sensor1.
To prevent scratches, never apply strong
force and use only a soft, non-scratchy
cloth when cleaning the sensor. Do not at-
tempt to wipe dirty sensors with a dry cloth
or sponge.Wiper blades

Fold wiper arms forward.

Clean the wiper blade inserts with a
clean cloth and detergent solution.Window cleaning

Fold wiper arms forward.

Use a window cleaning solution on all
glass surfaces.
An automotive glass cleaner is recom-
mended.
Warning!
G
For safety reasons, switch off wipers and re-
move SmartKey from starter switch before
cleaning the wiper blades, otherwise the
wiper motor can suddenly turn on and cause
injury.!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.
Warning!
G
For safety reasons, switch off wipers and re-
move SmartKey from starter switch before
cleaning the windshield, otherwise the wiper
motor can suddenly turn on and cause inju-
ry.!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.

252 Practical hintsWhat to do if …
What to do if …Lamps in instrument clusterGeneral information:
If a bulb in the instrument cluster fails to
come on during the bulb self-check when turning the SmartKey in starter switch to
position2, have it checked and replaced 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 Cen-
ter as soon as possible.
Failure to follow these instructions in-
creases the risk of an accident.

346 Technical termsPoly-V-belt drive
Drives engine-components (alternator,
AC compressor, etc.) from the engine.
Power train
Collective term designating all compo-
nents used to generate and transmit
motive power to the drive axles, includ-
ing


engine


clutch/torque converter


transmission


transfer case


drive shaft


differential


axle shafts/axles
Rear Parking Assist*
System which uses visual and acoustic
signals to assist the driver during park-
ing maneuvers.Remote Vehicle Diagnostics
Transmission of vehicle data and cur-
rent location to the Mercedes-Benz
Customer Assistance Center for sub-
scribers to Tele Aid service.
REST
(Residual engine heat utilization)
Feature that uses the engine heat
stored in the coolant to heat the vehi-
cle interior for a short time after the en-
gine has been turned off.
Restraint system
Seat belts, belt tensioner, airbags and
child seat restraint systems. As inde-
pendent systems, their protective func-
tions complement one another.RON
(R
esearch O
ctane N
umber)
The Research Octane Number for gaso-
line as determined by a standardized
method. It is an indication of a gaso-
line’s ability to resist undesired detona-
tion (knocking). The average of both
the ->MON (Motor Octane Number)
and RON (Research Octane Number) is
posted at the pump, also known as
ANTI-KNOCK INDEX.
Shift lock
When the vehicle is parked, this lock
prevents the transmission gear selec-
tor lever from being moved out of
positionP without key turned and
brake pedal depressed.
SRS
(S
upplemental R
estraint S
ystem)
Seat belts, emergency tensioning de-
vice and airbags. Though independent
systems, they are closely interfaced to
provide effective occupant protection.

351 Index
Backup lamps 296
Bulbs 296
Replacing bulbs 302
BAS 74, 76, 343
Messages in display 261
Batteries, SmartKey
Changing 288
Check lamp 87
Checking 88
Battery box
Fuse box in 319
Battery discharged
Jump starting 313
Battery, vehicle 235, 311
Charging 311
Disconnecting 312
Messages in display 265, 266
Reconnecting 312
Block heater 240
Blocking rear door window operation 71B-pillar 326
Brake assist system (BAS) 343
Brake fluid 225, 335
Brake lamp bulbs, left and right 296
Brake lamp, high mounted 296
Brake pads
Message in display 266
Brakes 208
Warning lamp 254, 255
Break-in period 206
Brush guard* 293
Lowering 294
Raising and securing 294
Bulbs, replacing
Additional turn signals 295
Backup lamps 296, 302
Brake lamps 296, 302
Front fog lamps 295, 299
Front lamps 295
Front turn signal lamps 295, 300High and low beam 297
High beam lamps 295
High mounted brake lamp 296
License plate lamps 296, 303
Low beam lamps 295
Parking lamps 295, 296, 297
Rear fog lamp 296, 302
Rear turn signal lamps 296
Side marker lamps 295, 300
Standing lamps 295, 296, 297
Tail lamp assemblies 296, 301
C
CAC (Customer Assistance Center) 343
Calling up
Range (distance to empty) 137
Service indicator 243
CAN system 343
Capacities
Fuels, coolants, lubricants, etc. 333
Cargo area see Cargo compartment

352 IndexCargo compartment
Tailgate 89, 90
Tie-down rings 182
Cargo compartment cover 175
Installing 176
Removing 176
Cargo tie-down rings 182
Catalytic converter 222
CD changer 284
CD player
Operating 121
Center console 27
AIRBAG OFF indicator lamp 259
Lower part 28
Upper part 27
Centigrade
Setting temperature units 127
Central locking
From inside 92
Switch 92Switching on/off (control
system) 133
Unlocking from inside 92
Certification label 326
Changing
Batteries (SmartKey) 288
Key setting 133
Charging
Vehicle battery 311
CHECK ENGINE malfunction indicator
lamp 256
Checking
Coolant level 225, 232
Oil level 226, 228
Checklist
Off-road driving 215
Child safety 65
Infant and child restraint systems 56,
62, 66
LATCH child seat anchors 70Child safety switch see Blocking of rear
door window operation
Cigarette lighter 188
Cleaning
Cup holders 248
Gear selector lever 248
Hard plastic trim items 248
Headlamps 153
Headliner 248
Illuminated door sill panels 249
Instrument cluster 248
Leather upholstery 249
Light alloy wheels 248
MB Tex upholstery 249
Plastic and rubber parts 249
Rear Parking Assist sensors* 247
Seat belts 248
Steering wheel 248
Windows 247
Windshield 48
Wiper blades 247
Wood trims 249

361 Index
Lock button 345
Locking 51, 86
Fuel filler flap 224
Global, SmartKey 87
Separately the tailgate 90
Vehicle in an emergency 288
Loss of keys 88
Loss of Service and Warranty Information
Booklet 325
Low beam headlamps
Messages in display 276
Replacing bulbs 295, 297
LOW RANGE - ABS 75
Lowering
Vehicle 310
Lubricants
Technical data 333
M
Main dimensions 332
Maintenance 242Malfunction
Displaying 122
Rear Parking Assist* 174
Malfunction memory 122
Calling up 122
Clearing 123
Manual headlamp mode 105
Manual operations
Fuel filler flap 290
Interior lighting control 109
Locking the tailgate 90
Locking the vehicle 288
Sliding/pop-up roof 292
Unlocking the driver’s door 287
Unlocking the tailgate 91, 287
Unlocking transmission gear selector
lever 290
MB Tex upholstery
Cleaning 249
Mechanical key 287
Memory function 101, 345
Recalling positions from
memory 102Storing exterior rear view mirror park-
ing positions 103
Storing key dependent settings 102
Menus 116
AUDIO 120
Control system 345
In control system 118, 119
Malfunction memory 122
NAVI 122
Settings menu 123
Standard display 120
Submenus 117
TEL 137
Trip computer 136
Messages in the multifunction display
Symbol messages 265
Text messages 261
Middle tunnel
Fuse box in 321
Miles/kilometers in speedometer
Setting 128

362 IndexMirrors
Activating exterior rear view mirror
parking position 153
Adjusting 38
Automatic antiglare for rear view
mirror 152
Exterior rear view mirror 38
Exterior rear view mirror parking
positions 135
Interior rear view mirror 38
Storing exterior rear view mirror park-
ing position 103
MON 225
MON (Motor Octane Number) 345
Monitoring reach
Rear Parking Assist* 173
Mph or km/h in speedometer
setting 128
Multicontour seat* 97
Multifunction display 115, 345
Selecting language 128
Standard display 119Multifunction display messages
ABS 261
BAS 261
Battery 265, 266
Brake fluid 266
Brake pads 266
Check engine 256
Coolant 268, 269
Display 282
Doors 271
Engine 256
Engine oil level 271
ESP 263
Fuel reserve tank 273
Hood 273
Key 273
Lamps 274, 276
Parking brake 267
Sunroof 281
Tailgate 282
Tele Aid 281
Telephone* 281
Washer fluid 282
Multifunction steering wheel 26, 116
Buttons 116N
Navigation system
Operating 122
See separate COMAND operating in-
structions
Night security illumination 106
Setting 131
O
Occupant safety 56
Airbags 57
Children in the vehicle 65
Fastening the seat belt 40
Infant and child restraint systems 66
LATCH child seat anchors 70
Seat belts 40, 60
Odometer, main 25
Off-road driving 213
Checklist 215
Crossing obstacles 218
Driving through water 217
Returning 220
Rules 214
Special driving features 214
Steep terrain 216