Autonomous Braking Function; Adaptive Brake Assist - Mercedes-Benz C-Class Operator's Manual

Driving safety systems
70
WARNING
G
The distance warning function cannot always
clearly identify objects and complex traffic
situations.
In such cases, the distance warning function
may:
give an unnecessary warning
R
not give a warning
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There is a risk of an accident.
Always pay careful attention to the traffic sit-
uation and do not rely solely on the distance
warning function.
Function
To activate/deactivate: activate or deac-
X
tivate the distance warning function in the
on-board computer (
If the distance warning function is not activa-
ted, the æ symbol appears in the assis-
tance graphics display.
The distance warning function can help you to
minimize the risk of a front-end collision with
a vehicle ahead or reduce the effects of such
a collision. If the distance warning function
detects that there is a risk of a collision, you
will be warned visually and acoustically.
Starting at a speed of around 4 mph (7 km/h),
the distance warning function warns you if
you rapidly approach a vehicle in front. An
intermittent warning tone will then sound,
and the · distance warning lamp will light
up in the instrument cluster.
Brake immediately in order to increase the
X
distance from the vehicle in front.
or
Take evasive action, provided it is safe to do
X
so.
Due to the nature of the system, particularly
complicated but non-critical driving condi-
tions may also cause the system to display a
warning.
With the help of the radar sensor system, the
distance warning function can detect obsta-
page 245).
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cles that are in the path of your vehicle for an
extended period of time.
Up to a speed of around 44 mph (70 km/h),
the distance warning function can also react
to stationary obstacles, such as stopped or
parked vehicles.
If you approach an obstacle and the distance
warning function detects a risk of a collision,
the system will initially alert you both visually
and acoustically.

Autonomous braking function

If the driver does not react to the distance
warning signal in a critical situation, COLLI-
SION PREVENTION ASSIST PLUS can assist
with the autonomous braking function.
The autonomous braking function:
gives the driver more time to react to criti-
R
cal driving situations
can help the driver to avoid an accident or
R
reduces the effects of an accident
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Vehicles without DISTRONIC PLUS: the
autonomous braking function is available in
the following speed ranges:
5 - 65 mph (7 - 105 km/h) for moving
R
objects
5 - 31 mph (7 - 50 km/h) for stationary
R
objects
Vehicles with DISTRONIC PLUS: the auton-
omous braking function is available in the fol-
lowing speed ranges:
5 - 124 mph (7 - 200 km/h) for moving
R
objects
5 - 31 mph (7 - 50 km/h) for stationary
R
objects
If the autonomous braking function requires a
particularly high braking force, preventative
passenger protection measures (PRE-SAFE
are activated simultaneously.

Adaptive Brake Assist

i Observe the "Important safety notes" sec-
tion ( page 66).
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