Mercedes-Benz M-Class 2012 Owners Manual - Manual (Page 211)

control, causing an accident and/or serious
personal injury to you and others. Do not
switch on DSR in a situation where rapid
deceleration could result in a loss of vehicle
control.
DSR controls the set speed when it is active
and the automatic transmission is in the D,
R or N position. You can drive at a higher or
a lower speed than that set on the on-board
computer at any time by accelerating or
braking.
G WARNING
If you depress the accelerator pedal with DSR
activated, the vehicle can drive faster than the
programmed set speed. You should therefore
drive downhill with particular caution as it
could lead to an accident and/or serious
injury to you or others. Keep in mind that as
soon as you remove your foot from the
accelerator pedal with DSR switched on, DSR
will start regulating the vehicle's speed
including use of brakes if required. Depending
on the programmed set speed, actual vehicle
speed and gradient, DSR can cause the
vehicle to slow down rapidly. Sudden and
unexpected deceleration can result in loss of
vehicle control, causing an accident and/or
serious personal injury to you and others.
For information on driving off-road, see
(
Y
page 162).
Activating/deactivating DSR
Activating
You can only activate DSR if you are driving
at 25 mph (40 km/h) or slower.
X Press button :.
Indicator lamp ; lights up.
The following messages appear in the
multifunction display and in the status
indicator, for example:
If the driving speed is too fast, the DSR
symbol and the Max. Speed 25 mph
(Canada: 40 km/h ) message appear in the
multifunction display.
i You cannot activate DSR if the SPORT on-
road program is activated. The DSR symbol
and the Not in Drive Program SPORT
message then appear in the multifunction
display.
Deactivating
X Press button :.
Indicator lamp ; goes out.
The DSR symbol appears in the
multifunction display with the Off
message.
DSR is deactivated automatically if you are
driving faster than 30 mph (Canada:
45 km/h). The DSR symbol appears in the
multifunction display with the Off message.
Status indicator = goes out. You also hear a
warning.
Off-road driving systems
209
Driving
and
parking
Z