2004 MERCEDES-BENZ G55AMG parking sensors

172 Controls in detailDriving systemsRear 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 247).
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.

173 Controls in detail
Driving systems
Range 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.

174 Controls in detailDriving systemsWarning indicator
Visual signals indicate to the driver the rel-
ative distance between the sensors and an
obstacle. The warning indicator is located
next to the tailgate.Warning indicatorAs your vehicle approaches an object, one
or more segments will come on, depending
on the distance. When the sixth segment
lights, you have reached the minimum dis-
tance.An intermittent acoustic warning will
sound when the first yellow segment
comes on. This signal quickens with each
additional segment lit. When all segments
illuminate, the acoustic warning becomes
a constant signal. The signal is canceled
when the gear selector lever is placed in
position D or P.
Rear Parking Assist malfunction
There is a malfunction in the Rear Parking
Assist system if:


a low warning tone sounds while the
vehicle is reversing
The Rear Parking Assist sensors are
dirty or malfunctioning.
Clean the Rear Parking Assist sys-
tem sensors (
page 247).

Switch on the ignition again.


no segments come on and no warning
sounds
The Rear Parking Assist is malfunction-
ing.
Have the Rear Parking Assist sys-
tem checked by an authorized
Mercedes-Benz Light Truck Center
as soon as possible.
Malfunction may also be caused by inter-
ference from other radio or ultrasonic sig-
nals.

Check the Rear Parking Assist opera-
tion at another location to rule out in-
terference from outside radio or
ultrasonic signals.

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.

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

365 Index
Rear fog lamp
Replacing bulbs 302
Switching on 107
Rear lamps see Tail lamps
Rear Parking Assist* 172, 346
Cleaning sensors 247
Malfunction 174
Monitoring reach 173
Warning indicators 174
Rear seat head restraints 96
Installing 96
Removing 96
Rear towing eye 318
Rear view mirror automatic antiglare 152
Rear view mirrors see Mirrors
Rear window defroster 155
Activating 155
Deactivating 155
Rear window wiper/washer 49
Reconnecting
Vehicle battery 312Refrigerant
Air conditioning 335
Refueling 224
Regular checks 225
Remote controls
SmartKey 86
Remote door unlock
With Tele Aid 197
Remote Vehicle Diagnostics 346
Removing
Cargo compartment cover 176
Wheel 309
Wiper blades 304
Replacing
Brake lamp bulbs 296
Bulbs 295
Front lamp bulbs 297
Rear lamp bulbs 296, 301
Wiper blades 304Resetting
All functions (control system) 123
All functions of a submenu 125
Fuel consumption 136
Service indicator (FSS) 243
Trip odometer 113
Residual heat utilization 346
REST (Residual engine heat
utilization) 346
Restraint systems 56, 346
Airbags 56
Child seat recognition 56
Child seats 56
Emergency Tensioning Device
(ETD) 56
Lower anchors and tethers for children
(LATCH) 56
Seat belts 56
Restraint systems see Infant and child re-
straint systems
Returning from off-road driving 220
Rims 329
Roadside Assistance
Tele Aid 193