Mercedes-Benz B-Class 2011 Owner's Manual page 67

Driving safety systems
64
In such cases, the distance warning signal
may:
give an unnecessary warning
R
not give a warning
R
There is a risk of an accident. Always pay par-
ticular attention to the traffic situation and be
ready to brake, especially if the distance
warning signal alerts you.
G
WARNING
The distance warning signal does not react:
to people or animals
R
to oncoming vehicles
R
to crossing traffic
R
when cornering
R
Thus, the distance warning signal cannot pro-
vide a warning in all critical situations. There
is a risk of an accident. Always pay careful
attention to the traffic situation and be ready
to brake.
To activate/deactivate: activate or deac-
X
tivate the distance warning signal in the on-
board computer (
When the distance warning signal is activa-
ted, the multifunction display shows the
Ä symbol as long as the HOLD function is
not activated (
Y
Active Parking Assist, the Ä symbol is dis-
played when position P is engaged or you are
driving faster than 35 km/h.
The distance warning signal can help you to
minimise the risk of a front-end collision with
a vehicle ahead or reduce the effects of such
a collision. If the distance warning signal
detects that there is a risk of a collision, you
will be warned visually and acoustically. The
distance warning signal cannot prevent a col-
lision without your intervention.
The distance warning signal will issue a warn-
ing at speeds of around 30 km/h or more if:
the distance to the vehicle in front is too
R
short for the speed you are driving at for
several seconds. The · distance warn-
page 199).
Y
page 162). On vehicles with
ing lamp then lights up in the instrument
cluster.
you are rapidly approaching the vehicle in
R
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.
For the distance warning signal to assist you
when driving, the function must be activated
in the on-board computer (
be operational.
Due to the nature of the system, particularly
complicated driving conditions may cause the
system to display an unnecessary warning.
With the help of the radar sensor system, the
distance warning signal can detect obstacles
that are in the path of your vehicle for an
extended period of time.
At speeds up to approximately 70 km/h, the
distance warning signal may also detect sta-
tionary obstacles, for example, stopped or
parked vehicles.
If you approach an obstacle and the distance
warning signal detects a risk of a collision, the
system will initially alert you both visually and
acoustically.
In particular, the detection of obstacles can
be impaired if there is:
dirt on the sensors or anything else cover-
R
ing the sensors
snow or heavy rain
R
interference by other radar sources
R
the possibility of strong radar reflections,
R
for example, in multi-storey car parks
a narrow vehicle travelling in front, e.g. a
R
motorbike
a vehicle travelling in front on a different
R
line
Following damage to the front end of the vehi-
cle, have the configuration and operation of
page 199) and
Y