on the front-passenger side deploys under the
following conditions:
-
an occupant is detected in the front-
passenger seat or
-
the belt tongue is engaged in the belt
buckle of the front-passenger seat
R
Windowbag on the side on which an impact
occurs, independently of seat belt usage and
regardless of whether the front-passenger
seat is occupied
R
Seat belt tensioners, if the system determines
that deployment can offer additional protec-
tion for the vehicle occupants in this situation
R
Windowbags on the driver's and front-
passenger side in certain situations if the
vehicle overturns and if the system deter-
mines that deployment can offer additional
protection to that provided by the seat belt
i
Not all airbags are deployed in an accident.
The different airbag systems work independ-
ently of each other.
How the airbag system works is determined
by the severity of the accident detected,
especially the vehicle deceleration or accel-
eration, and the apparent type of accident:
R
frontal collision
R
side impact
R
overturn
PRE-SAFE
®
(anticipatory occupant
protection)
Introduction
In certain hazardous situations, PRE-SAFE
®
takes pre-emptive measures to protect the vehi-
cle occupants.
Important safety notes
!
Make sure that there are no objects in the
footwell or behind the seats. There is a risk
that the seats and/or the objects could be
damaged when PRE-SAFE
®
is activated.
Although your vehicle is equipped with PRE-
SAFE
®
, the possibility of injury in the event of an
accident cannot be ruled out. 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 physi-
cal limits are exceeded and the vehicle under-
steers or oversteers severely
R
on vehicles with the Driving Assistance pack-
age: if BAS PLUS 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 side windows and the
sliding sunroof are closed.
R
vehicles with the memory function: the front-
passenger seat is adjusted if it is in an unfav-
ourable position.
R
vehicles with a multicontour seat: the air pres-
sure in the side bolsters of the backrest is
increased.
If the hazardous situation passes without result-
ing 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 belt pre-tensioning is not reduced:
X
Move the seat backrest or seat back slightly
when the vehicle is stationary.
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. Informa-
tion about the convenience function can be
found under "Belt adjustment" (
Y
page 46).
PRE-SAFE
®
PLUS (anticipatory occu-
pant protection PLUS)
Introduction
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 sit-
56
Occupant safety
Safety
