Mercedes-Benz C-Class Operator's Manual page 79

Distance warning function
General information
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.
Important safety notes
Observe the "Important safety notes" sec-
i
tion for driving safety systems (
G
WARNING
The distance warning function does not react:
to people or animals
R
to oncoming vehicles
R
to crossing traffic
R
when cornering
R
Thus, the distance warning function cannot
provide a warning in all critical situations.
There is a risk of an accident.
Always pay careful attention to the traffic sit-
uation and be ready to brake.
G
WARNING
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
R
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
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 73).
cles that are in the path of your vehicle for an
Y
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.
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
R
Vehicles without DISTRONIC PLUS: the
autonomous braking function is available in
the following speed ranges:
4 - 65 mph (7 - 105 km/h) for moving
R
objects
4 - 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:
4 - 124 mph (7 - 200 km/h) for moving
R
objects
4 - 31 mph (7 - 50 km/h) for stationary
R
objects
Driving safety systems
77
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