prepares the vehicle for a possible emer-
gency braking manoeuvre.
In particularly critical situations Active
Brake Assist may brake autonomously. In
this case, Active Brake Assist continues to
alert the driver both visually and acousti-
cally.
Please note
G
WARNING
Active Brake Assist cannot always clearly
identify objects and complex traffic situa-
tions.
In these cases, Active Brake Assist may:
R
warn or brake for no reason
R
not issue a warning
R
not brake
There is a risk of an accident.
Always pay careful attention to the traffic
situation and do not rely on Active Brake
Assist alone. Be prepared to brake or
manoeuvre if necessary.
G
WARNING
Active Brake Assist does not react:
R
to persons, bicycles, motorcycles or ani-
mals
R
to approaching vehicles
R
to cross traffic
R
on bends
As a result, Active Brake Assist cannot
intervene in all critical situations. There is
a risk of an accident.
Always pay careful attention to the traffic
situation and be prepared to brake.
G
WARNING
Severe jolting, for example in the case of a
collision, may cause the radar sensors to
be misaligned. The function of Active Brake
Assist is then impaired.
There is a risk of an accident.
Deactivate Active Brake Assist. Have Active
Brake Assist checked at a qualified spe-
cialist workshop.
The following requirements must also be ful-
filled:
R
the selector lever is in position
7
.
R
the parking brake is released.
R
the driving speed is within the suitable
speed range.
Detection can be restricted under the follow-
ing conditions:
R
the vehicle is new or service work has been
carried out on the system. In this case,
observe the information on running-in the
vehicle
R
the radio sensors are dirty or covered
R
in heavy rain or snow
R
there is interference from other radar
sources, e.g. in multi-storey car parks
R
the vehicle travelling in front is narrow,
e.g. a motorcycle
R
the vehicle travelling in front is travelling
on a different line
Autonomous braking can be cancelled by
briefly depressing the accelerator pedal.
If the brake lamps are inoperative, deacti-
vate Active Brake Assist.
i
Observe the notes on "Limitations of the
driving safety systems" (
Distance warning and forward collision
warning with autonomous braking func-
tion
Method of operation
If the distance maintained to the vehicle
ahead is insufficient for the speed you are
driving at, the
·
warning lamp lights up.
If Active Brake Assist detects a risk of colli-
sion while driving, the
·
warning lamp
lights up and a warning tone sounds. If the
driver depresses the brake pedal fast, the
braking pressure may be increased to a full
brake application.
The autonomous braking function may inter-
vene if the driver does not react to the
forward collision warning.
52
Driving safely
>> Safety
.
