ADAPTIVE BRAKE
ADAPTIVE BRAKE offers exceptional braking
comfort and a higher level of braking safety.
In addition to the braking function, ADAPTIVE
BRAKE also has the HOLD convenience func-
tion (
Y
page 256) and hill start assist
(
Y
page 219). For further information, see
Driving tips (
Y
page 325).
PRE-SAFE Brake
®
* (vehicles with Dis-
tronic Plus*)
PRE-SAFE
®
Brake can help you to minimise
the risk of a frontal collision with a vehicle in
front or reduce the effects of such a collision.
This function will issue a warning at speeds of
around 30 km/h or more if:
R
for a period of several seconds, the dis-
tance to the vehicle in front is too short for
the speed at which you are travelling. The
·
distance warning lamp in the instru-
ment cluster will light up.
R
you are approaching the vehicle in front too
rapidly. An intermittent warning tone will
then sound and the
·
distance warning
lamp will light up in the instrument cluster.
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.
In addition, at speeds of around 30 km/h or
more, PRE-SAFE
®
Brake can:
R
brake the vehicle gently and automatically
within a speed range of up to around
180 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 automatically brake
slightly. In the event of an increased risk of a
collision, PRE-SAFE
®
is activated
(
Y
page 44).
G
Risk of accident
Only clearly detected obstacles will trigger a
warning and initiate braking assistance by
PRE-SAFE
®
Brake.
In particular, the detection of obstacles may
be restricted if there is:
R
dirt on the sensors or the sensors are cov-
ered
R
snow or heavy rain
R
interference from other radar sources
R
strong radar reflections, for example in
multi-storey car parks
PRE-SAFE
®
Brake does not react to persons,
animals, oncoming vehicles and crossing traf-
fic.
PRE-SAFE
®
Brake may not detect narrow
vehicles such as motorcycles or vehicles driv-
ing on a different line.
G
Risk of accident
Depending on the vehicle's speed, PRE-
SAFE
®
Brake will brake your vehicle up to
Driving safety systems
57
Safet
y
* optional
221_AKB; 2; 3, en-GB
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