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To activate/deactivate: press the a but‐
#
ton.
The distance warning function and the auton‐
omous braking function of Active Brake Assist
are deactivated or activated.
When the functions are deactivated, the æ
symbol appears in the Assistance graphic in
the multifunction display.
The next time the vehicle is started, Active Brake
Assist is automatically activated.
Function of Adaptive Brake Lights
Adaptive brake lights warn following traffic in an
emergency braking situation with the following
signals:
By flashing the brake lamps
R
By activating the hazard warning lights
R
If the vehicle is braked sharply from speeds
above 50 km/h, the brake lamps flash rapidly.
This provides traffic travelling behind you with an
even more noticeable warning.
If the vehicle is travelling at speeds of more than
70 km/h at the beginning of the brake applica‐
tion, the hazard warning lights switch on once the
vehicle is stationary. When pulling away again,
the hazard warning lights switch off automatically
at approximately 10 km/h.
You can also switch off the hazard warning lights
using the hazard warning button (
Cruise control and limiter
Function of cruise control
Cruise control accelerates and brakes the vehicle
automatically in order to maintain a previously
stored speed.
If you accelerate to overtake, for example, the
stored speed is not deleted. If you remove your
foot from the accelerator pedal after overtaking,
cruise control will resume speed regulation back
to the stored speed.
You operate cruise control using the cruise con‐
trol lever. You can store any speed above
30 km/h.
If you fail to adapt your driving style, cruise con‐
trol can neither reduce the risk of an accident nor
override the laws of physics. It cannot take into
account road, weather or traffic conditions.
Cruise control is only an aid. You are responsible
for the distance to the vehicle in front, for vehicle
speed, braking in good time and for staying in
your lane.
System limits
Cruise control may be unable to maintain the
stored speed on uphill gradients. The stored
speed is resumed if the uphill gradient evens out
and the vehicle's speed does not fall below
30 km/h.
On long and steep downhill gradients, you should
change down to a lower gear in good time. Take
particular note of this when driving a laden vehi‐
cle. By doing so, you will make use of the
engine's braking effect. This will take some of the
strain off the brake system and prevent the
brakes from overheating and wearing too quickly.
If you change wheel size on your vehicle, check it
is assigned to the correct wheel size category
(
/
recoding the control units in the vehicle, the func‐
tioning of cruise control may be impaired.
Do not use cruise control in the following situa‐
tions:
R
R
R
page 107).
R
/
Function of the limiter
The limiter restricts the speed of the vehicle. To
adjust to the set speed quickly, the limiter applies
the brakes automatically.
You can limit the speed as follows:
R
R
You can operate the variable limiter with the
cruise control lever. You can store any speed
above 30 km/h. You can also perform settings
while the vehicle is stationary if the vehicle has
been started.
If you fail to adapt your driving style, the limiter
can neither reduce the risk of an accident nor
override the laws of physics. It cannot take into
account road, weather or traffic conditions. The
limiter is only an aid. You are responsible for the
Driving and parking 165
page 324). If the category is changed without
in traffic situations where frequent speed
changes are required, e.g. in heavy traffic or
on winding roads
off-road or on construction sites
on slippery or slick roads, as the drive wheels
can lose traction when accelerating and the
vehicle can then skid
if there is poor visibility
Variable: for speed restrictions, e.g. in built-
up areas.
Permanent: for long-term speed restrictions,
e.g. when driving in winter tyre mode.
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