Mercedes-Benz 2007 E 320 BLUETEC Operator's Manual page 271

Controls in detail
Driving systems
270
Front sensors
Center approx. 40 in (100 cm)
Corners approx. 24 in (60 cm)
Rear sensors
Center approx. 48 in (120 cm)
Corners approx. 32 in (80 cm)
!
During parking maneuvers, pay special at-
tention 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.
truck air brakes, car wash or jackhammers) may
impair the operation of the Parktronic system.
Minimum distance
Center approx. 8 in (20 cm)
Corners approx. 6 in (15 cm)
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 might no
longer be indicated by the system.