parking sensors MERCEDES-BENZ S350 2006 W221 Owner's Manual

235 Controls in detail
Driving systems
Parktronic system* (Parking assist)
The Parktronic system is an electronic aid
designed to assist the driver during park-
ing maneuvers. It visually and audibly indi-
cates the relative distance between the
vehicle and an obstacle.
The Parktronic system is automatically ac-
tivated when you switch on the ignition
and placed the gear selector lever in posi-
tion D, R, or N.
The Parktronic system deactivates at
speeds over approximately 11 mph
(18 km/h). At lower speeds the Parktronic
system turns on again.
The Parktronic system also deactivates
when you place the gear selector lever in
position P.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 bumper
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 the sensors, see
“Cleaning the Parktronic* system sensors”
(
page 335).
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 rests 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, es-
pecially at times of snow and ice, see
“Cleaning the Parktronic* system sensors”
(page 335).
Interference caused by other ultrasonic sig-
nals (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.

236 Controls in detailDriving systemsFront sensorsRear sensors Minimum distance
If the system detects an obstacle in this
range, all the distance warning segments
illuminate and you hear a warning signal. If
the obstacle is closer than the minimum
distance, the actual distance may no long-
er be indicated by the system.
Warning indicators
Visual signals indicate to the driver the rel-
ative distance between the sensors and an
obstacle. The warning indicators for the
front area are located above the left air
vents and center air vents in the dash-
board. The warning indicator for the rear
area is integrated in the rear trim.Center
approx. 40 in (100 cm)
Corners
approx. 24 in (60 cm)
Center
approx. 48 in (120 cm)
Corners
approx. 32 in (80 cm)
!During parking maneuvers, pay special
attention to objects located above or
below the height of the sensors (e.g.
street curbs, painted posts, or trailer
hitches etc.). 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 sourc-
es (e.g. truck air brakes, car wash, or
jackhammers) may impair the opera-
tion of the Parktronic system.
Center
approx. 8 in (20 cm)
Corners
approx. 6 in (15 cm)

467 Index
Parking position
Exterior rear view mirrors 130, 170,
172, 187
Parktronic system* 235, 447
Parktronic*
Cleaning sensors 335
Malfunctioning 238
Warning indicators 236
Parts service 420
Passenger compartment 281
Fuse box in 417
Interior lighting 137
Interior rear view mirror 41
Parcel net in front passenger
footwell 247
Passenger safety see Occupant
safety 60
Passenger seat fore and aft
adjustment 119
Passenger seat head restraint
height 119
Passenger seat height 119
Pedals 273
Phone book*
Loading 154
Quick search 154Phone number*
Dialing 154
Redialing 155
Plastic and rubber parts
Cleaning 338
Poly-V-belt drive 447
Positions (Memory function)
Recalling from memory 129
Positions (Memory function*)
Storing into memory 129
Potential problems associated with under-
inflated and overinflated tires 312
Power assistance 273
Power closing assist for doors and trunk
lid 112
Power folding exterior rear view
mirrors 188
Power seat
Adjusting backrest tilt 38
Adjusting head restraint height 39
Adjusting head restraint tilt 39
Adjusting seat cushion depth 38
Adjusting seat cushion tilt 38
Adjusting seat height 38
Front seat head restraints 116
Seat fore and aft adjustment 38Power seat bench* 117
Head restraint folding down or placing
upright 117
Power tilt/sliding sunroof 212
Closing 212
Closing in an emergency 391
Messages in display 374
Opening 212
Opening in an emergency 391
Power train 447
Power washer 333
Power windows 208
Blocking of rear window operation 77
Closing 208, 209
Opening 208
Side windows 208
Synchronizing 210
Practical hints
First aid kit 384
Fuses 416
Lamp in center console 348
Lamps in instrument cluster 340
Towing the vehicle 413
Vehicle status messages in the multi-
function display 349
Vehicle tool kit 384