Mercedes-Benz E-Class 2009 Owners Manual - Manual (Page 180)

Driving systems
178
Parktronic system malfunction
There is a malfunction in the Parktronic
system, if only the red distance segments
illuminate and an acoustic warning sounds.
The Parktronic system will switch off
automatically after 20 seconds and indicator
lamp
2 in Parktronic switch 1 comes on.
X Have the Parktronic system checked at an
authorized Mercedes-Benz Center as soon
as possible.
If only the red distance segments illuminate
and no acoustic warning sounds, the
Parktronic system sensors are dirty (e.g. dirt,
ice, snow and slush) or there is an
interference from other radio or ultrasonic
signals (e.g. truck air brakes, car wash, or
jackhammers). The Parktronic system will
switch off automatically after 20 seconds and
indicator lamp
2 in Parktronic switch 1
comes on.
X Switch off the ignition.
X Clean the Parktronic system sensors
(
Y page 285).
X Switch on the ignition.
or
X Check the Parktronic system operation at
another location to rule out interference
from outside radio or ultrasonic signals.
Controls in detail