2008 MERCEDES-BENZ GL450 parking sensors

288 Controls in detail
Driving systems
When the highway level is reached, the in-
dicator lamps3 (
page 281) goes out.
The following message appears in the mul-
tifunction display for 5 seconds:
Parktronic system*
The Parktronic system is an electronic
parking aid and designed to assist the
driver during parking maneuvers. It visually
and audibly indicates the relative distance
between the vehicle and an obstacle.
The Parktronic system is automatically
activated when you

switch on the ignition or start the
engine
and

release the parking brake
and

set the automatic transmission to
positionD,R, orN
iThe vehicle is lowered automatically to the
highway level if the vehicle speed is above
60 mph (96 km/h).
Warning!G
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 remains with the driver.
Special attention must be paid to objects
with smooth surfaces or low silhouettes
(e.g. trailer couplings, painted posts, or road
curbs). Such objects may not be detected by
the system and can damage the vehicle.
The operational function of the Parktronic
system can be affected by dirty sensors,
especially at times of snow and ice. See
“Cleaning the Parktronic system sensors”
(
page 430).
Interference caused by other ultrasonic
signals (e.g. working jackhammers, car
wash, or the air brakes of trucks) can cause
the system to send erratic indications, and
should be taken into consideration.
Warning!G
Make sure no persons or animals are in the
area in which you are maneuvering. You
could otherwise injure them.
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289 Controls in detail
Driving systems
The Parktronic system deactivates at
vehicle speeds exceeding approximately
11 mph (18 km/h). At lower vehicle
speeds the Parktronic system turns on
again.
The Parktronic system also deactivates
when you set the automatic transmission
to positionP or depress the parking brake
pedal.
The Parktronic system monitors the sur-
roundings of your vehicle with six sensors
in the front bumper and four sensors in the
rear bumper.
1Sensors in the front bumperRange 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 damaging the sensors, see
“Cleaning the Parktronic* system sensors”
(
page 430).
!During parking maneuvers, pay special
attention to objects located above or below the
height of the sensors (e.g. planters or trailer
hitches). The Parktronic system will not detect
such objects at close range and damage to your
vehicle or the object may result.
Ultrasonic signals from outside sources (e.g.
working jackhammers, car wash or the air brakes
of trucks) may impair the operation of the
Parktronic system.
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585 Index
Off-road - 4-ETS 108
Off-road - ABS 102
Off-road - ESP
®106
Off-road driving
Checklist 357, 363
Crossing obstacles 361
Driving instructions for off-road
driving 355
Driving through water 360
Returning 363
Rules 356
Special driving features 356
Steep terrain 358
Off-road driving program (Vehicles without
enhanced off-road package*) 277
Oil level see Engine oil, Checking level
One-touch gearshifting 199
Operating safety 17
Operator’s Manual 10
Ornamental moldings, Cleaning 429
Outside temperature see Displays
Overdue maintenance service term 423
Overhead control panel 34
Oxidation catalyst (diesel engine) 371P
Paintwork code 550
Paintwork, Cleaning 426
Panic alarm 100
Panorama roof, Rear 212
Parcel net
Front passenger footwell 319
Front seat backrests 319
Parking 67, 350
On hills 67
Over things that burn, Potential
consequences 67, 371
Parking brake 59, 67
Lamps, Indicator and warning 437
Messages in the multifunction
display 468
Releasing 59
Parking lamps 505
Messages in the multifunction
display 480
Replacing bulbs 509
Parking position*
Exterior rear view mirrors 182, 209Parktronic* 31, 32, 288
Cleaning system sensors 430
Minimum distance 290
Range 289
Switching on/off 291
System malfunction 292
System sensors 289
System sensors, Cleaning 430
Warning indicators 25, 290
Parts service 548
PASS AIR BAG OFF indicator lamp see
Front passenger front air bag off
indicator lamp
Passenger compartment 370
Fuse box 545
Interior lighting 149
Interior rear view mirror 34
Parcel net in front passenger
footwell 319
Passenger safety see Occupant safety
Pedals 347
Phone see Telephone*
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