Mercedes-Benz 2013 GLS Class - Manual (Page 75)

PRE-SAFE ® Brake
General notes
i Observe the "Important safety notes" sec-
tion ( Y page 67).
PRE-SAFE ® Brake is only available in vehicles
with DISTRONIC PLUS.
For PRE-SAFE
® Brake to assist you when driv-
ing, the radar sensor system must be:
R
activated ( Y page 259)
R
operational
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.
PRE-SAFE
® Brake can help you to minimise
the risk of a collision with a vehicle ahead or
reduce the effects of such a collision. If PRE-
SAFE
® Brake has detected a risk 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.
At speeds of up to approximately 70 km/h
PRE-SAFE
® Brake can also detect stationary
objects. Examples of stationary objects are
stopped or parked vehicles.
Important safety notes
G
WARNING
PRE-SAFE ® Brake will initially brake your vehi-
cle by a partial application of the brakes if a
danger of collision is detected. There may be
a collision unless you also brake. Automatic
emergency braking cannot prevent a colli-
sion. There is a risk of an accident.
Always apply the brakes yourself and try to
take evasive action.
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
neither give a warning nor intervene
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. Terminate the
intervention in a non-critical driving situation.
In particular, the detection of obstacles can
be impaired if there is:
R
dirt on the sensors or anything else cover-
ing the sensors
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
R
a narrow vehicle travelling in front, e.g. a
motorcycle
R
a vehicle travelling in front on a different
line
G
WARNING
PRE-SAFE ® Brake does not react:
R
to people or 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 order to maintain the appropriate distance
to the vehicle in front and thus prevent a col-
lision, you must apply the brakes yourself.
Due to the nature of the system, particularly
complicated driving conditions may cause
unnecessary warnings or the unnecessary
intervention of PRE-SAFE
® Brake.
Following damage to the front end of the vehi-
cle, have the configuration and operation of
Driving safety systems
73
Safety
Z