Purpose and function of the restraint system
Overview of deployment situations (restraint sys-
tem)
Make sure that the following prerequisites in par-
ticular have been met so that the components of
the restraint system are able to provide the inten-
ded level of protection:
R
Sit correctly (/ page 101).
R
Fasten the seat belt correctly (/ page 102).
-
Function of the seat belt warning lamp
(/ page 104).
-
Function of the rear seat belt status dis-
play (/ page 104).
R
The 6 restraint system warning lamp is not
lit up aer the self-test (/ page 103).
R
The PASSENGER AIR BAG indicator lamps dis-
play the correct status of the front passenger
airbag (/ page 105).
Depending on the detected deployment situation,
the components of the restraint system can be
activated or deployed independently of each
other:
R
Seat belt tensioner: frontal impact, rear
impact, side impact, rollover
R
Driver's airbag, front passenger airbag: frontal
impact
R
Knee airbag: frontal impact
R
Side airbag: side impact
R
Centre airbag in the driver's seat backrest:
side impact, rollover
R
Window airbag: side impact, rollover, frontal
impact
R
Belt airbag in the rear seat belt: frontal impact
R
PRE-SAFE
®
Impulse Side: side impact
The installation location of an airbag is identied
by the AIRBAG symbol (/ page 117).
Observe the information on the function of the
restraint system (/ page 111).
Information on how the restraint system works
How the restraint system functions depends on
the severity of the impact detected and the appa-
rent type of accident.
For more information about types of accidents,
see "Overview of deployment situations"
(/ page 111).
The activation thresholds for the components of
the restraint system are determined based on the
evaluation of the sensor values measured at vari-
ous points in the vehicle. This process is pre-emp-
tive in nature. The triggering/deployment of the
components of the restraint system must take
place in good time at the start of the collision.
Factors which can only be seen and measured
aer a collision has occurred cannot play a deci-
sive role in airbag deployment. Nor do they pro-
vide an indication of airbag deployment.
The vehicle may be deformed signicantly without
an airbag being deployed. This is the case if only
parts which are relatively easily deformed are
aected and the rate of vehicle deceleration is
not high. Conversely, an airbag may be deployed
even though the vehicle suers only minor defor-
Occupant safety – Purpose and function of the restraint system
111
F297 0017 02
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