Due to the nature of the system, particularly
complicated driving conditions may cause the
system to display an unnecessary warning.
G
Risk of accident
Pay particular attention to the traffic condi-
tions if the
·
distance warning lamp in the
instrument cluster lights up or an intermittent
warning tone sounds. If necessary, brake or
manoeuvre to avoid an obstacle.
If the driver and passengers have fastened
their seat belts, PRE-SAFE
®
Brake can also
can also perform the following at speeds of
above approximately 30 km/h:
R
brake the vehicle automatically from a
speed of up to around 200 km/h
R
trigger preventative passenger protection
measures (PRE-SAFE
®
)
G
Risk of accident
PRE-SAFE
®
Brake is only an aid to assist you
when driving. You are responsible for main-
taining a safe distance from other vehicles,
the vehicle's speed and for braking in good
time. Always pay attention to the traffic con-
ditions. Otherwise, you may recognise dan-
gers too late, cause an accident and injure
yourself and others.
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. If you approach an obstacle
and PRE-SAFE
®
Brake detects a risk of a col-
lision, the system will initially alert you both
visually and acoustically. If you do not brake
or steer, the vehicle will at first automatically
brake slightly. In the event of an increased
risk of a collision, PRE-SAFE
®
is activated
(
Y
page 42). If the risk of collision persists and
you do not brake, manoeuvre or accelerate
significantly yourself, an automatic full brake
application may be carried out.
G
Risk of accident
Only clearly identified obstacles will trigger a
warning and initiate braking assistance by
PRE-SAFE
®
Brake.
In particular, the detection of obstacles can
be restricted if there is:
R
dirt on the sensors or the sensors are cov-
ered
R
snow or heavy rain
R
interference by other radar sources
R
the possibility of strong radar reflections,
for example in multi-storey car parks
PRE-SAFE
®
Brake does not react to persons,
animals, oncoming vehicles, crossing traffic
or when cornering.
PRE-SAFE
®
Brake may not detect narrow
vehicles such as motorcycles and vehicles
driving on a different line.
G
Risk of accident
Depending on the current speed, PRE-SAFE
®
Brake decelerates your vehicle by up to
4 m/s
2
before performing possible emer-
gency braking. This is equivalent to approx-
imately 40 % of the maximum braking power
of the vehicle. You must also apply the brakes
yourself to limit the effects of the collision or
to avoid the collision. Automatic emergency
braking is not performed until immediately
prior to an accident in the event that you are
unable to avoid one by, for instance, taking
evasive action.
In order to maintain the appropriate distance
to the vehicle in front and thus prevent a
crash, you must apply the brakes yourself.
At speeds up to approximately 70 km/h,
PRE-SAFE
®
Brake can also detect stationary
obstacles, for example stopped or parked
vehicles.
64
Driving safety systems
Sa
fet
y
212_AKB; 2; 4, en-GB
mkalafa,
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