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Occupant safety
54
sive role in the deployment of an air bag. Nor do
they provide an indication of air bag deploy-
ment.
The vehicle can be deformed considerably, with-
out an air bag being deployed. This is the case if
only parts which are relatively easily deformed
are affected and the rate of deceleration is not
high. Conversely, air bags may be deployed even
though the vehicle suffers only minor deforma-
tion. This is the case if, for example, very rigid
vehicle parts such as longitudinal body mem-
bers are hit, and sufficient deceleration occurs
as a result.
If the restraint system control unit detects a side
impact or if the vehicle rolls over, the applicable
components of the restraint system are
deployed independently of each other depend-
ing on the apparent type of accident.
Side impact air bag on the side of impact,
R
independently of the Emergency Tensioning
Device and the use of the seat belt on the
driver's seat
The side impact air bag on the front-
passenger side deploys under the following
conditions:
the OCS system detects that the front-
-
passenger seat is occupied or
the seat belt buckle tongue is engaged in
-
the belt buckle of the front-passenger seat
Head bag on the side of impact, independ-
R
ently of the use of the seat belt and inde-
pendently of whether the front-passenger
seat is occupied
Emergency Tensioning Devices, if the system
R
determines that deployment can offer addi-
tional protection in this situation
Head bags on the driver's and front-
R
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:
Head-on collision
R
Side impact
R
Rollover
R
®
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
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:
in emergency braking situations, e.g. when
R
BAS is activated
in critical driving situations, e.g. when physi-
R
cal limits are exceeded and the vehicle under-
steers or oversteers severely
on vehicles with Distance Pilot DISTRONIC:
R
when active, Brake Assist intervenes power-
fully
®
PRE-SAFE
takes the following measures
depending on the hazardous situation detected:
the front seat belts are pre-tensioned.
R
if the vehicle skids, the side windows are
R
closed.
vehicles with the memory function for the
R
front-passenger seat: the front-passenger
seat is adjusted if it is in an unfavorable posi-
tion.
If the hazardous situation passes without result-
ing in an accident, PRE-SAFE
pre-tensioning. All settings made by PRE-SAFE
can then be reversed.
®
®
is activated.
®
slackens the belt
®
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