Mercedes-Benz 2003 M-Class Operator's Manual page 150

Controls in detail
Driving systems
Monitoring reach of sensors
The sensors must be free of dirt, ice and
snow or they will be unable to function
properly. Clean the sensors regularly with-
out scratching or damaging them.
150
Front sensors
Center 40 in (100 cm)
Corner 24 in (60 cm)
Rear sensors
Center 48 in (120 cm)
Corner 32 in (80 cm)
Minimum distance
Center 6 in (15 cm)
Corner 8 in (20 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.
Warning indicators
The warning indicators show the distance
between the sensor and the obstacle. The
warning indicators for the front area are lo-
cated above the center air outlets in the
dashboard. The warning indicator for the
rear area is located in the rear passenger
compartment lamp.
1 Segments, left side of vehicle
2 Segments, right side of vehicle
Each warning indicator has 6 yellow and 2
red segments.