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R
Activate DSR. If this is not sufficient, brake
gently. When doing so, make sure that the
vehicle is facing in the direction of the line
of fall.
R
Check that the brakes are working normally
after a long downhill stretch.
Off-road ABS is activated when the off-road
program is selected.
At speeds below 18 mph (30 km/h), the front
wheels lock cyclically during braking. The dig-
ging-in effect achieved in the process reduces
the stopping distance on off-road terrain. The
steerability of the vehicle is considerably
reduced if the wheels lock.
Driving systems
Cruise control
General notes
Cruise control maintains a constant road
speed for you. It brakes automatically in order
to avoid exceeding the set speed. On long and
steep downhill gradients, especially if the vehi-
cle is laden, you must select a low gear in
good time. You need to shift manually using
the steering wheel paddle shifters beforehand.
By doing so, you will make use of the braking
effect of the engine. This relieves the load on
the brake system and prevents the brakes
from overheating and wearing too quickly.
When the engine is running, you can use the
cruise control lever to limit the speed to any
speed between 20 mph (30 km/h) and the
technically permitted maximum speed of the
vehicle.
Use cruise control if road and traffic condi-
tions make it appropriate to maintain a steady
speed for a prolonged period.
The speed indicated in the speedometer may
differ slightly from the speed stored.
Important safety notes
If you fail to adapt your driving style, cruise
control can neither reduce the risk of an acci-
dent nor override the laws of physics. Cruise
control cannot take into account the road,
traffic and weather conditions. Cruise control
is only an aid. You are responsible for the dis-
tance to the vehicle in front, for vehicle speed,
for braking in good time and for staying in your
lane.
Do not use cruise control:
R
in road and traffic conditions which do not
allow you to maintain a constant speed, e.g.
in heavy traffic or on winding roads
R
on slippery road surfaces. Braking or accel-
erating could cause the drive wheels to lose
traction and the vehicle could then skid
R
in poor visibility, e.g. due to fog, heavy rain
or snow
If there is a change of drivers, advise the new
driver of the speed stored.
Cruise control lever
:
Activates or increases speed
;
Activates or reduces speed
=
Deactivates cruise control
?
Activates at the current speed or last
stored speed
When you activate cruise control, the stored
speed is shown in the multifunction display for
five seconds.
Activation conditions
To activate cruise control, all of the following
activation conditions must be fulfilled:
R
the electric parking brake must be released.
R
ESP
®
must be active, but not intervening.
Storing, maintaining and calling up a
speed
Storing and maintaining the current
speed
You can store the current speed if you are
driving faster than 20 mph (30 km/h).
Driving systems
157
Driving and parking
Z
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