PRE-SAFE
®
Brake warns you. Terminate the
intervention in a non-critical driving situation.
G
WARNING
PRE-SAFE
®
Brake cannot always clearly iden-
tify people, especially if they are moving. In
these cases, PRE-SAFE
®
Brake cannot inter-
vene. There is a risk of an accident.
Always pay particular attention to the traffic
situation and be ready to brake, especially if
PRE-SAFE
®
Brake warns you.
In order to maintain the appropriate distance to
the vehicle in front and thus prevent a collision,
you must apply the brakes yourself.
G
WARNING
PRE-SAFE
®
Brake does not react:
R
to small people, e.g. children
R
to animals
R
to oncoming vehicles
R
to crossing traffic
R
when cornering
As a result, PRE-SAFE
®
Brake may neither
give warnings nor intervene in all critical sit-
uations. There is a risk of an accident.
Always pay careful attention to the traffic sit-
uation and be ready to brake.
In the event of snowfall or heavy rain, detection
can be impaired.
Detection by the radar sensor system is also
impaired in the event of:
R
dirt on the sensors or obscured sensors
R
interference by other radar sources
R
strong radar reflections, for example, in multi-
storey car parks
R
a narrow vehicle travelling in front, e.g. a
motorcycle
R
a vehicle travelling in front on a different line
Detection by the camera system is also impaired
in the event of:
R
dirt on the camera or if the camera is covered
R
glare on the camera system, e.g. from the sun
being low in the sky
R
darkness
R
if:
-
pedestrians move quickly, e.g. into the path
of the vehicle
-
the camera system no longer detects a
pedestrian as a person due to special cloth-
ing or other objects
-
a pedestrian is concealed by other objects
-
the typical outline of a person is not distin-
guishable from the background
Following damage to the front end of the vehicle,
have the radar sensor settings and operation
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.
Following damage to the windscreen, have the
configuration and operation of the camera sys-
tem checked at a qualified specialist workshop.
Function
X
To activate/deactivate: activate or deacti-
vate PRE-SAFE
®
Brake in the on-board com-
puter (
Y
page 221).
If the PRE-SAFE
®
Brake is not activated, the
æ
symbol appears in the multifunction dis-
play.
This function will issue a warning if:
R
at a speed of approximately 30 km/h or more
the distance maintained to the vehicle travel-
ling in front is insufficient for several seconds
The
·
distance warning lamp then lights
up in the instrument cluster.
R
at a speed of approximately 7 km/h or more,
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.
X
Brake immediately to defuse the situation.
or
X
Take evasive action provided it is safe to do
so.
The PRE-SAFE
®
Brake function can also brake
the vehicle automatically under the following
conditions:
R
the driver and front passenger have their seat
belts fastened
70
Driving safety systems
Safety
