R
Emergency Tensioning Devices, if the system
determines that deployment can offer addi-
tional protection in this situation
R
Coupe:
Window curtain air bags on the driver's and
front-passenger side in certain situations
when the vehicle rolls over, if the system
determines that deployment can offer addi-
tional protection to that provided by the seat
belt
R
Cabriolet:
Head bags on the driver's and front-
passenger side in certain situations when the
vehicle rolls over, if the system determines
that deployment can offer additional protec-
tion to that provided by the seat belt
i
Not all air bags are deployed in an accident.
The different air bag systems work independ-
ently of each other.
How the air bag 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
Rollover
PRE-SAFE
®
(anticipatory occupant
protection system)
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 danger
that the seats and/or objects could be dam-
aged when PRE-SAFE
®
is activated.
Despite your vehicle being equipped with the
PRE-SAFE
®
system, the possibility of personal
injuries occurring as a result of an accident can-
not 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 physi-
cal limits are exceeded and the vehicle under-
steers 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 sit-
uations
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 front side windows are
closed.
R
the front-passenger seat is adjusted if it is in
an unfavorable position.
R
vehicles with a multicontour seat: the air pres-
sure in the side bolsters of the seat 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.
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. Informa-
tion about the convenience function can be
found under "Belt adjustment" (
Y
page 48).
PRE-SAFE
®
PLUS (anticipatory occu-
pant protection system 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-
Occupant safety
59
Safety
Z
