Mercedes-Benz S-Class 2014 Owners Manual - Manual (Page 58)

PRE-SAFE ® (anticipatory occupant
protection system)
Introduction
PRE-SAFE ® takes preemptive measures to
protect occupants in certain hazardous
situations.
Important safety notes
!
Make sure that there are no objects in the
footwell or behind the seats when resetting
the seats. There is a risk that the seats
and/or the objects could be damaged.
Despite your vehicle being equipped with the
PRE-SAFE ® system, the possibility of
personal injuries occurring as a result of an
accident cannot be eliminated.
Always adapt your driving style to suit the
prevailing road and weather conditions and
maintain a safe distance from the vehicle in
front. Drive carefully.
Function
PRE-SAFE ® intervenes:
R in emergency braking situations, e.g. when
BAS is activated.
R in critical driving situations, e.g. when
physical limits are exceeded and the
vehicle understeers or oversteers severely.
R vehicles with the Driving Assistance
package: when a driver assistance system
intervenes powerfully or the radar sensor
system detects an imminent danger of
collision in certain situations
PRE-SAFE ® takes the following measures
depending on the hazardous situation
detected:
R the front seat belts are pre-tensioned.
R if the vehicle skids, the panorama roof with
power tilt/sliding panel and the side
windows are closed so that only a small gap
remains.
R the front-passenger seat is adjusted if it is
in an unfavorable position.
R vehicles with electrically adjustable
rear seats: the outer rear seats are
adjusted if they are in an unfavorable
position.
R vehicles with a multicontour seat: the
air pressure in the side bolsters of the
backrest is increased.
R vehicles with seat belt extenders: the
seat belts of the outer rear seats are pre-
tensioned.
If the hazardous situation passes without
resulting in an accident, PRE-SAFE ® slackens
the belt pre-tensioning. On vehicles with
multicontour seats, the air pressure in the
side bolsters is reduced again. All settings
made by PRE-SAFE ® can then be reversed.
If the seat belts are not released:
X When the vehicle is stationary, move the
backrest or seat back slightly.
The seat belt pre-tensioning is reduced and
the locking mechanism is released.
The seat-belt adjustment is an integral part of
the PRE-SAFE ® convenience function. More
information about seat-belt adjustment can
be found under "Seat-belt adjustment"
(
Y
page 60).
More information about PRE-SAFE ® PLUS
(
Y
page 56).
PRE-SAFE ® PLUS (anticipatory
occupant protection system PLUS)
General information
PRE-SAFE ® PLUS is only available in vehicles
with the Driving Assistance package.
Using the radar sensor system, PRE-SAFE
®
PLUS is able to detect that a head-on or rear-
end collision is imminent. In certain
hazardous situations, PRE-SAFE ® PLUS takes
pre-emptive measures to protect the vehicle
occupants.
56
Occupant safety
Safety