Mercedes-Benz 2009 M-Class Operator's Manual page 174

Controls in detail
Driving systems
Vehicle level control switch
1
Indicator lamp
2
Basic settings (all models, except
ML 63 AMG)
The following vehicle chassis ride heights can
be selected using the vehicle level control
switch in the center console:
12 Ground clearance: 7.9 in (201 mm)
172
Level Driving situation
Raised For off-road driving or
driving in rough terrain. The
indicator lamp is on.
Highway For driving on paved roads
in fair or better condition.
The indicator lamp is off.
i The third available level is the highspeed
level that is set automatically.
The following is the approximate change in
ride height for each of the level settings:
Level Ride height
Raised +2.3 in (60 mm)
12 +/-0 in (0 mm)
Highway
Highspeed -0.6 in (-15 mm)
i Vehicles with ADS:
Depending on the ADS setting
Y
( page 170), the vehicle will be lowered to
the highspeed level when traveling at
higher speeds. At speeds below 40 mph
(64 km/h) at the latest, it will be returned
to the highway level.
i The highspeed level is not available when
towing a trailer. For more information on
towing a trailer, see "Trailer
Y
towing" ( page 282).
Basic settings (ML 63 AMG only)
The following vehicle chassis ride heights can
be selected using the vehicle level control
switch in the center console:
Level Driving situation
Raised For off-road driving or
driving in rough terrain. The
indicator lamp is on.
Highway For driving on paved roads
in fair or better condition.
The indicator lamp is off.
i The third available level is the highspeed
level that is set automatically.
How much the vehicle is lowered or raised
depends on the ADS setting selected. At the