2003 MERCEDES-BENZ G55AMG brake sensor

165 Controls in detail
Driving systems
Rear Park Assist*
The Rear Park Assist system is an electron-
ic aid designed to assist the driver during
parking maneuvers. It visually and audibly
indicates the relative distance between the
rear of the vehicle and an obstacle.
The Rear Park Assist system is automati-
cally activated when you switch on the ig-
nition and shift the gear selector lever to
positionR.The Rear Park Assist system monitors the
rear area of your vehicle by means of four
sensors in the rear bumper.
1SensorsWarning!
G
Rear Park Assist (rear Parktronic) is a sup-
plemental system. It is not intended to, nor
does it replace, the need for extreme care.
The responsibility during parking and other
critical maneuvers always rests with the
driver.
Special attention must be paid to objects
with smooth surfaces or low silhouettes
(e.g. trailer couplings, painted posts, or
street curbs). Such objects may not be de-
tected by the system and can damage the
vehicle.
The operational function of the Rear Park
Assist can be affected by dirty sensors, es-
pecially at times of snow and ice. See
“Cleaning the Rear Park Assist sensors”
(page 234).
Interference caused by other ultrasonic sig-
nals (e.g. working jackhammers or the air
brakes of trucks) can cause the system to
send erratic indications, and should be tak-
en into consideration.Warning!
G
Make sure that no persons or animals are in
the area in which you are maneuvering. You
could otherwise injure them.

166 Controls in detailDriving systemsRange of the sensors
To function properly, the sensors must be
free of dirt, ice, snow and slush. Clean the
sensors regularly, being careful not to
scratch or damage them.Minimum distance
The minimum distance between the sen-
sors and an obstacle is approximately
20 in (50 cm). If you encounter an obstacle
in this range, all the warning lamps light up
and you hear a warning signal. If the obsta-
cle is closer than the minimum distance,
the actual distance may no longer be indi-
cated by the system.
Center
approx. 59.1 in (150 cm)
Corners
approx. 40 in (100 cm)
!During parking maneuvers, pay special
attention to objects located above or
below the height of the sensors (e.g.
planters or trailer hitches). The Rear
Park Assist system will not detect such
objects at close range and damage to
your vehicle or the object may result.
Ultrasonic signals from outside sourc-
es (e.g. truck air brakes or jackham-
mers) may impair the operation of the
Rear Park Assist system.

325 Technical terms
ABS
(A
ntilock B
rake S
ystem)
Prevents the wheels from locking up
during braking so that the vehicle can
continue to be steered.
BabySmart
TM
airbag deactivation
system
This system detects if a special system
compatible child restraint seat is in-
stalled on the front passenger seat. The
system will automatically deactivate
the passenger front airbag when such a
seat is properly installed (indicator
lamp
7
in the center console lights
up). See your authorized
Mercedes-Benz Light Truck Center for
availability.
BabySmartTM
compatible child seats
Special restraint system for children.
The sensor system for the passenger
seat prevents deployment of the pas-
senger front airbag if a BabySmart
TM
compatible child seat is installed.BAS
(B
rake A
ssist S
ystem)
System for potentially reducing braking
distances in emergency braking situa-
tions. The system is activated when it
senses an emergency based on how
fast the brake is applied.
CAC
(C
ustomer A
ssistance C
enter)
Mercedes-Benz customer service cen-
ter, which can help you with any ques-
tions about your vehicle and provide
assistance in the event of a break-
down.
CAN system
(C
ontroller A
rea N
etwork)
Data bus network serving to control ve-
hicle functions such as door locking or
windshield wiping.
Cockpit
All instruments, switches, buttons and
indicator/warning lamps in the passen-
ger compartment needed for vehicle
operation and monitoring.COMAND
(C
ockpit M
anagement and D
ata Sys-
tem)
Information and operating center for
vehicle sound and communications
systems, including the radio and the ra-
dio and navigation system, as well as
for other optional equipment (CD
changer, telephone, etc.).
Control system
The control system is used to call up
vehicle information and to change
component settings. Information and
messages appear in the multifunction
display. The driver uses the buttons on
the multifunction steering wheel to
navigate through the system and to ad-
just settings.

340 IndexInterior storage spaces 176
Cup holder 178
Cup holders 178, 179
Glove box 176
Parcel net in front passenger
footwell 179
Storage compartment below
armrest 177
Storage compartment in front of
armrest 177
Interval wiping 48
Switching off 48
Switching on 48
J
Jack 268, 269
Jump starting 297
K
Key dependency memory
Settings 129
Key positions in starter switch 33
Key, mechanical 272
Key, SmartKey
Battery check lamp 85
Changing the batteries 273
Checking the batteries 86Factory setting 85
Global locking 85
Global unlocking 85
Loss of 86
Positions in starter switch 33
Remote controls 84
Restoring to factory setting 85
Selective setting 85
Starting the engine 44
Unlocking with 32
Keys 84
Kickdown 139, 326
Kilometers/miles in speedometer 122
Km/h or mph in speedometer 122
L
Labels, identification 310
Lamp bulbs, exterior 279
Lamps, exterior
Front 279
Light sensor 261
Messages in display 259, 261
Rear 280
Replacing bulbs for rear 286
Lamps, indicator and warning
ABS 240
Battery (SmartKey) 85Brakes 241, 242
CHECK ENGINE 243
Engine diagnostics 243
ESP 238, 239
Fuel reserve 243, 244
Instrument cluster 243, 244
Seat belts 243
Service indicator 230
SRS 55
Turn signals 25
Language
Multifunction display 123
Setting 123
LATCH child seat anchors 68
LATCH child seat mounts 68
Layout of poly-V-belt drive 311
Leather upholstery
Cleaning 236
License plate lamps
Messages in display 261
Replacing bulbs 280, 288
Light alloy wheels
Cleaning 235
Technical data 313
Light sensor 261
Lighter see Cigarette lighter 181

345 Index
Rear bench seat
Foldable 169
Rear door window
Blocking operation 69
Rear fog lamp
Replacing bulbs 287
Switching on 103
Rear lamps see Tail lamps
Rear Park Assist* 165, 327
Cleaning sensors 234
Malfunction 167
Monitoring reach 166
Warning indicators 167
Rear seat head restraints 93
Installing 93
Removing 93
Rear towing eye 302
Rear view mirror automatic antiglare 147
Rear view mirrors see Mirrors
Rear window defroster 155
Activating 155
Deactivating 155
Rear window wiper/washer 48
Reconnecting
Vehicle battery 296Refrigerant
Air conditioning 317
Regular checks 215
Remote controls
SmartKey 84
Remote door unlock
With Tele Aid 190
Remote Vehicle Diagnostics 328
Removing
Cargo area cover 169
Wheel 293
Wiper blades 289
Replacing
Brake lamp bulbs 280
Bulbs 279
Front lamp bulbs 281
Rear lamp bulbs 280, 286
Wiper blades 289
Reset knob in the instrument cluster 119
Resetting
All functions (control system) 119
All functions of a submenu 120
Fuel consumption 131
Service indicator (FSS) 231
Trip odometer 109
Residual heat utilization 328REST (Residual engine heat utilization) 328
Restraint system 328
Restraint system see Infant and child
restraint systems 63, 67
Restraint systems 54
Airbags 54
Child seat recognition 54
Child seats 54
Emergency Tensioning Device (ETD) 54
Lower anchors and tethers for children
(LATCH) 54
Seat belts 54
Returning from off-road driving 209
Rims 313
Roadside assistance
Tele Aid 187
RON 215
RON (Research Octane Number) 328
Roof rack 168
Rotating wheels 226
Rubber parts
Cleaning 236
S
Safety
Occupant 54
Safety belts see Seat belts 40