Mercedes-Benz 2008 M-Class Operator's Manual page 253

Controls in detail
Driving systems
You can increase or reduce the set speed
in two ways.
Adjustment in 1 mph (Canada: 1 km/h)
increments
i
The set value is increased or decreased in
1 mph (Canada: 1 km/h) increments each time
you lift or depress the cruise control lever to the
resistance point.
Increase set speed:
Briefly lift the cruise control lever up to
the resistance point in direction of
arrow 1 ( page 251).
Release the cruise control lever.
The vehicle speed increases in incre-
ments of 1 mph (Canada: 1 km/h).
252
Reduce set speed:
Briefly press the cruise control lever
down to the resistance point in direc-
tion of arrow 2 ( page 251).
Release the cruise control lever.
The vehicle speed decreases in incre-
ments of 1 mph (Canada: 1 km/h).
Each time the set speed is changed,
DSR will appear in the multifunction dis-
play and the changed set speed is
shown.
i
The set speed is canceled when DSR is
switched off. If DSR is switched on again, DSR
will use the programmed default speed
( page 178).
Adjustment in 5 mph
(Canada: 10 km/h) increments
i
The set value is increased or decreased in
5 mph (Canada: 10 km/h) increments each time
you lift or depress the cruise control lever past
the resistance point.
Increase set speed:
Briefly lift the cruise control lever up
past the resistance point in direction of
arrow 1 ( page 251).
Release the cruise control lever.
The vehicle speed increases in incre-
ments of 5 mph (Canada: 10 km/h).
Reduce set speed:
Briefly press the cruise control lever
down past the resistance point in direc-
tion of arrow 2 ( page 251).