2005 MERCEDES-BENZ G500 brake sensor

179 Controls in detail
Driving systems
Rear Parking Assist*
The Rear Parking Assist system is an elec-
tronic aid designed to assist the driver dur-
ing parking maneuvers. It visually and
audibly indicates the relative distance be-
tween the rear of the vehicle and an obsta-
cle.
The Rear Parking Assist system is auto-
matically activated when you switch on the
ignition and shift the gear selector lever to
positionR.The Rear Parking Assist system monitors
the rear area of your vehicle by means of
four sensors in the rear bumper.
1SensorsWarning!
G
Rear Parking Assist (rear Parktronic) is a
supplemental 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 Parking
Assist can be affected by dirty sensors, es-
pecially at times of snow and ice. See
“Cleaning the Rear Parking Assist sensors”
(page 283).
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 no persons or animals are in the
area in which you are maneuvering. You
could otherwise injure them.

180 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 come
on and you hear a warning signal. If the ob-
stacle is closer than the minimum dis-
tance, the actual distance may no longer
be indicated 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
Parking Assist system will not detect
such objects at close range and dam-
age 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 Parking Assist system.

381 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.
Accessory weight
(
page 271)
Air pressure
(page 271)
Aspect ratio
(page 271)
BabySmart
TM1
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
lamp7 in the center console
comes on).BabySmart
TM
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. See
an authorized Mercedes-Benz Light
Truck Center for availability.
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.
Bar
(
page 271)
Bead
(page 271)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.
Cold tire inflation pressure
(
page 271)
1BabySmart
TM is a trademark of Siemens
Automotive Corp.

398 IndexL
Labels, identification 366
Lamp bulbs, exterior 333
Lamps, exterior
Front 334
Light sensor 314
Messages in display 312, 314
Rear 334
Replacing bulbs for rear 341
Lamps, indicator and warning
ABS 288, 289
Battery (SmartKey) 94
Brakes 290, 291
CHECK ENGINE 292
Engine diagnostics 292
ESP 293
Fuel reserve 294
Instrument cluster 294
Maintenance service indicator 277
Seat belts 294
SRS 63
Turn signals 25
Language
Multifunction display 136
Setting 136LATCH child seat anchors 77
Layout of poly-V-belt drive 367
Leather upholstery
Cleaning 285
License plate lamps
Messages in display 314
Replacing bulbs 334, 342
Light alloy wheels
Cleaning 284
Technical data 370, 371
Light sensor 314
Lighter see Cigarette lighter
Lighting 110
Automatic headlamp mode 111
Combination switch 114
Daytime running lamp mode 112
Exterior lamp switch 110
Front fog lamps 113
High beam flasher 114
High beams 114
Instrument cluster illumination 120
Interior 116
Locator lighting 113
Low beams 110
Manual headlamp mode 111Night security illumination 113
Parking lamps 110
Rear fog lamp 114
Settings (control system) 137
Limiting the gear range 150
Limp Home Mode 153
Line of fall 383
Loading 182
Cargo compartment cover 182
Cargo tie-down rings 189
Instructions 187
Partition net* 185
Roof rack 182
Split rear bench seat 183
Loading terminology 271
Loading the vehicle 251
Locator lighting 113
Setting 138
Lock button 383
Locking 57, 92
Fuel filler flap 235
Global, SmartKey 94
Vehicle in an emergency 326
Loss of keys 96

404 IndexR
Radio
Satellite (USA only) 129
Selecting stations 129
Station search 129
Station selection setting 141
Radio transmitters, control and
operation 231
Range (distance to empty)
Calling up 145
Range of sensor
Rear Parking Assist* 180
Reading lamp 30
Rear axle differential lock
Switching on 159
Rear bench seat
Foldable 183
Rear door window
Blocking operation 78
Rear fog lamp
Replacing bulbs 342
Rear lamps see Tail lampsRear Parking Assist* 179, 384
Cleaning sensors 283
Malfunction 181
Monitoring reach 180
Warning indicators 181
Rear seat head restraints 102
Installing 103
Removing 103
Rear towing eye 359
Rear view mirror auto-dimming 160
Rear view mirrors see Mirrors
Rear window defroster 163
Activating 163
Deactivating 163
Rear window wiper/washer 54
Recommended inflation pressure 272
Reconnecting
Vehicle battery 353
Recovery services
For stolen vehicle 205
Refrigerant
Air conditioning 376
Refueling 235
Regular checks 236Remote controls
SmartKey 92
Remote door unlock
With Tele Aid 205
Removing
Cargo compartment cover 183
Wheel 349
Wiper blades 344
Replacing
Brake lamp bulbs 334
Bulbs 333
Front lamp bulbs 335
Rear lamp bulbs 334, 341
SmartKey batteries 331
Wiper blades 344
Resetting
All functions (control system) 132
All functions of a submenu 133
Fuel consumption 144
Maintenance service indicator 279
Trip odometer 121
Residual heat utilization 384
REST (Residual engine heat
utilization) 384