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Driving systems
142
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 lower gear in
good time. 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.
Use cruise control only if road and traffic con-
ditions make it appropriate to maintain a
steady speed for a prolonged period. You can
store any road speed above 20 mph
(30 km/h).
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
lane.
Do not use cruise control:
in road and traffic conditions which do not
R
allow you to maintain a constant speed e.g.
in heavy traffic or on winding roads
on slippery road surfaces. Braking or accel-
R
erating could cause the drive wheels to lose
traction and the vehicle could then skid
when there is poor visibility, e.g. due to fog,
R
heavy rain or snow
If there is a change of drivers, advise the new
driver of the speed stored.
Cruise control lever
:
To store the current speed or a higher
speed
To store the current speed or calls up the
;
last stored speed
To store the current speed or a lower
=
speed
To deactivate cruise control
?
When you activate cruise control, the stored
speed is shown in the multifunction display for
five seconds. The speed is then permanently
displayed in the status indicator together with
the ¯ symbol.
In vehicles with a segment circle in the speed-
ometer, the segments between the currently
stored speed and the end of the segment cir-
cle light up.
Storing, maintaining and calling up a
speed
Storing and maintaining a speed
Accelerate the vehicle to the desired speed.
X
Briefly press the cruise control lever up :
X
or down ?.
Remove your foot from the accelerator
X
pedal.
Cruise control is activated. The vehicle auto-
matically maintains the stored speed.
You can store the current speed if you are
driving faster than 20 mph (30 km/h).
i
Cruise control may be unable to maintain
the stored speed on uphill gradients. The
stored speed is resumed when the gradient
evens out. Cruise control maintains the
stored speed on downhill gradients by auto-
matically applying the brakes.
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