Mercedes-Benz 2005 M-Class Operator's Manual page 159

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 damaging the sensors.
Front sensors
Center approx. 39.4 in (100 cm)
Corners approx. 23.6 in (60 cm)
Rear sensors
Center approx. 47.2 in (120 cm)
Corners approx. 31.5 in (80 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 Park-
tronic system will not detect such ob-
jects 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
Parktronic system.
Controls in detail
Driving systems
Minimum distance
Center approx. 8 in (20 cm)
Corners approx. 6 in (15 cm)
When an obstacle is located in this area, all
warning displays will light up and a warning
tone will sound. If the vehicle moves closer
than the minimum distance to an object,
the distance may no longer be displayed.
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