Mercedes-Benz 2003 M-Class Operator's Manual page 80

Safety and Security
Anti-theft systems
Arming tow-alarm and glass breakage
sensor
When you lock your vehicle, the tow-away
and glass breakage sensor alarm is auto-
matically armed.
Disarming tow-alarm and glass break-
age sensor
To prevent triggering the tow-away alarm
feature, switch off the tow-away alarm and
glass breakage sensor before towing the
vehicle, or when parking on a surface sub-
ject to movement, such as a ferry or auto
train.
80
Vehicles with trip computer*
The buttons are located in the overhead
control panel.
1 Reset button
2 Mode button
3 Display
4 Glass breakage sensor
Turn key in steering lock to position 1
( page 33).
Press button 2.
Return key to position 0 and remove it
from the steering lock.
Within 30 seconds press button 1 or 2.
The display shows .
OFF
Exit vehicle and lock vehicle with re-
mote control ( page 32).
The tow-away alarm and glass breakage
sensor remain switched off until the key is
inserted in steering lock and turned to
position 1.