Mercedes-Benz 2009 M-Class Operator's Manual page 170

Controls in detail
Driving systems
For information on how to program the set
speed while driving, see "Adjusting the DSR
speed" ( Y page 168).
Switching off the DSR
X
Press DSR switch 1.
The indicator lamp goes out.
2
The message DSR Off appears in the
multifunction display.
i
At a speed above approximately 21 mph
(Canada approximately: 35 km/h), the DSR
is automatically switched off. The message
DSR Off appears in the multifunction
display and an acoustic signal sounds. For
information on how to switch the DSR on
again, see "Switching on the
DSR" ( Y page 167).
Adjusting the DSR speed
With the DSR switched on ( Y page 167), the
speed setting can be changed using the
cruise control lever.
168
Cruise control lever
Increase set speed
1
Reduce set speed
2
You can change the set speed between
3-10 mph (Canada: 4-18 km/h).
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:
X
Briefly lift the cruise control lever up to the
resistance point in direction of arrow 1.
X
Release the cruise control lever.
The vehicle speed increases in increments
of 1 mph (Canada: 1 km/h).
Reduce set speed:
X
Briefly press the cruise control lever down
to the resistance point in direction of arrow
2.
X
Release the cruise control lever.
The vehicle speed decreases in increments
of 1 mph (Canada: 1 km/h).
Each time the set speed is changed, DSR
will appear in the multifunction display and
the changed set speed is shown.
The set speed is canceled when the DSR is
switched off. If the DSR is switched on again,
the DSR will use the programmed default
speed ( Y page 159).
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