Mercedes-Benz 2005 M-Class Operator's Manual page 193

Setting the compass zone
Determine the geographical point of
the vehicle with the aid of the zone
maps.
Switch on the ignition.
Press MODE 2 ( page 189) repeat-
edly until the compass display appears
in the trip computer display 3.
Press RESET 1 ( page 189) to select
the compass zone mode.
The zone selected last is shown in the
display.
Press RESET 1 repeatedly until the
correct compass zone, as determined
from the zone map, is shown in the dis-
play.
Press MODE 2 twice.
The new compass zone is activated and
the compass display will be shown.
Calibrating the compass
If the vehicle was exposed to a significant
magnetic zone, such as high voltage power
lines, the compass may have to be calibrat-
ed.
To calibrate the compass correctly, ob-
serve the following:
Calibrate the compass in an area free
of steel superstructures and power
lines.
Switch off all electrical consumers (e.g.
exterior lamps, climate control, rear
window defroster etc.).
Do not open or close the tilt/sliding
sunroof.
Close doors and liftgate.
i
An open liftgate triggers the
display .
- - -
Controls in detail
Useful features
Start and run the engine.
Press MODE 2 ( page 189) repeat-
edly until the compass display appears
in the trip computer display 3.
Press RESET 1 and afterwards press
MODE 2.
In the display appears .
CAL–
Press and hold RESET 1 for approxi-
mately two seconds.
The calibration mode is activated and
the display shows .
CAL
Drive without interruption two full cir-
cles at a speed between 3 mph
(5 km/h) and 7 mph (10 km/h).
The message goes out after a short
CAL
time. The calibration is now complete.
191