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Driving safety systems
74
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WARNING
The distance warning function does not react:
to people or animals
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to oncoming vehicles
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to crossing traffic
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when cornering
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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.
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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
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not give a warning
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There is a risk of an accident.
Always pay careful attention to the traffic sit-
uation; do not rely on the distance warning
function alone.
Function
The distance warning function issues a warning
at speeds:
of approximately 30 km/h or more, if, over
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several seconds, the distance maintained to
the vehicle travelling in front is insufficient.
The · distance warning lamp then lights
up in the instrument cluster.
of approximately 7 km/h or more, if you rap-
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idly approach a vehicle in front. An intermit-
tent 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
that are in the path of your vehicle for an exten-
ded period of time.
Up to a speed of approximately 70 km/h, the
distance warning function can also react to sta-
tionary obstacles, such as stopped or parked
vehicles.
Autonomous braking function
If the driver does not react to the distance warn-
ing signal in a critical situation, COLLISION PRE-
VENTION ASSIST PLUS can assist with the
autonomous braking function.
The autonomous braking function:
gives the driver more time to react to critical
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driving situations
can help the driver to avoid an accident or
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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:
7 - 105 km/h for moving objects
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7 - 50 km/h for stationary objects
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Vehicles with DISTRONIC PLUS: the autono-
mous braking function is available in the follow-
ing speed ranges:
7 - 200 km/h for moving objects
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7 - 50 km/h for stationary objects
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Due to the nature of the system, complicated
but non-critical driving situations may also
cause the autonomous braking function to inter-
vene.
If the autonomous braking function demands
particularly high braking force, preventative
passenger protection measures (PRE-SAFE
are activated simultaneously (
Adaptive Brake Assist
General notes
i
Observe the "Important safety notes" sec-
tion (
page 70).
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With the help of Adaptive Brake Assist, the dis-
tance warning signal can detect obstacles that
are in the path of your vehicle for an extended
period of time.
If Adaptive Brake Assist detects a risk of a col-
lision with the vehicle in front, it calculates the
®
)
page 57).
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