of collision, you will be warned visually and
acoustically as well as by automatic braking.
PRE-SAFE
®
Brake cannot prevent a collision
without your intervention.
This function will issue a warning if:
R
at speeds of around 30 km/hor more, over
several seconds, the distance maintained
to the vehicle travelling in front is insuffi-
cient.
The
·
distance warning lamp then lights
up in the instrument cluster.
R
at a speed of approximately 7 km/h or
higher, you very quickly 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 in order to increase the
distance from the vehicle in front.
or
X
Take evasive action provided it is safe to do
so.
From a speed of approximately 7 km/h, if the
driver and passengers have fastened their
seat belts, PRE-SAFE
®
Brake can brake the
vehicle automatically from a speed of up to
approximately 200 km/h.
Due to the nature of the system, particularly
complicated driving conditions may cause
unnecessary warnings or the unnecessary
intervention of PRE-SAFE
®
Brake. To end this,
you can either depress the accelerator pedal
further, activate kickdown or release the
brake pedal.
The braking action of PRE-SAFE
®
Brake is
ended automatically if:
R
you manoeuvre to avoid the obstacle.
R
there is no longer any danger of a rear-end
collision.
R
there is no longer an obstacle detected in
front of your vehicle.
With the help of the radar sensor system,
PRE-SAFE
®
Brake can detect obstacles that
are in front of your vehicle for an extended
period of time.
At speeds up to approximately 70 km/h,PRE-
SAFE
®
Brake can also detect stationary
obstacles, for example, stopped or parked
vehicles.
If you approach an obstacle and PRE-SAFE
®
Brake detects a risk of a collision, the system
will initially alert you both visually and acous-
tically. If you do not brake or take evasive
action, the system will warn you by automat-
ically braking the vehicle gently. If there is an
increased risk of collision, preventative
passenger protection measures (PRE-SAFE
®
)
are activated (
Y
page 48). If, at speeds over
30 km/h, a risk of collision remains and you
do not brake, take evasive action or signifi-
cantly accelerate, automatic braking may be
performed up to a level of automatic emer-
gency braking. Automatic emergency braking
is not performed until immediately prior to an
accident that can no longer be avoided.
G
WARNING
Even if PRE-SAFE
®
Brake slows the vehicle
before an imminent rear-end collision, the
system cannot avert a collision without the
intervention of the driver. There is a risk of an
accident. Brake according to the situation or
take evasive action. Delayed intervention by
the driver can lead to an accident.
G
WARNING
PRE-SAFE
®
Brake cannot always clearly iden-
tify objects and complex traffic conditions.
In these cases, PRE-SAFE
®
Brake may:
R
give an unnecessary warning and then
brake the vehicle
R
not give a warning or intervene
There is a risk of an accident. Always pay par-
ticular attention to the traffic situation and be
ready to brake, especially if PRE-SAFE
®
Brake
warns you. Terminate the intervention in a
non-critical driving situation.
76
Driving safety systems
Safety
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