Distance Warning Function - Mercedes-Benz C-CLASS Operator's Manual

Important safety notes
In particular, the detection of obstacles can be
impaired if:
there is dirt on the sensors or anything else
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covering the sensors
there is snow or heavy rain
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there is interference by other radar sources
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there are strong radar reflections, for exam-
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ple in parking garages
a narrow vehicle is traveling in front, e.g. a
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motorbike
a vehicle is traveling in front on a different line
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the vehicle is new or after a service on the
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COLLISION PREVENTION ASSIST PLUS sys-
tem
Observe the important safety notes in the
"Breaking-in notes" section (
Following damage to the front end of the vehicle,
have the configuration and operation of the
radar sensor checked at a qualified specialist
workshop. This also applies to collisions at slow
speeds where there is no visible damage to the
front of the vehicle.
Activating/deactivating
The COLLISION PREVENTION ASSIST PLUS is
automatically active after switching on the igni-
tion.
You can activate or deactivate COLLISION PRE-
VENTION ASSIST PLUS in the on-board com-
puter ( page 218). When deactivated, the dis-
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tance warning function and the autonomous
braking function are also deactivated.
If COLLISION PREVENTION ASSIST PLUS is
deactivated, the æ symbol appears in the
assistance graphics display.

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
i
tion for driving safety systems (
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The distance warning function does not react:
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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.
page 134).
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The distance warning function cannot always
clearly identify objects and complex traffic
situations.
In such cases, the distance warning function
may:
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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
Starting at a speed of approximately 4 mph
(7 km/h), the distance warning function warns
you if you are rapidly approaching 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
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distance from the vehicle in front.
or
Take evasive action, provided it is safe to do
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so.
Due to the nature of the system, particularly
complicated but non-critical driving conditions
may also cause the system to display a warning.
With the help of the radar sensor system, the
distance warning function can detect obstacles
Driving safety systems
Observe the "Important safety notes" sec-
WARNING
to people or animals
to oncoming vehicles
to crossing traffic
when cornering
WARNING
give an unnecessary warning
not give a warning
67
page 64).
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