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Depending on the detected deployment situation,
the components of the restraint system can be
activated or deployed independently of each
other:
Emergency Tensioning Device: frontal impact,
R
rear impact, side impact, rollover
Driver's air bag, front passenger air bag: fron-
R
tal impact
Knee air bag: frontal impact
R
Side air bag: side impact
R
Window air bag: side impact, rollover, frontal
R
impact
®
PRE-SAFE
Impulse Side: side impact
R
The installation location of an air bag is identified
by the AIRBAG symbol (
page 54).
/
Observe the information on the function of the
restraint system (
page 49).
/
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.
Occupant safety – Purpose and function of the restraint system
For more information about types of accidents,
see "Overview of deployment situations"
(
page 48).
/
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 that can be seen and measured only after
a collision has occurred cannot play a decisive
role in air bag deployment. Nor do they provide an
indication of air bag deployment.
The vehicle may be deformed significantly without
an air bag being deployed. This is the case if only
parts which are relatively easily deformed are
affected and the rate of vehicle deceleration is
not high. Conversely, an air bag may be deployed
even though the vehicle suffers only minor defor-
mation. If very rigid vehicle parts such as longitu-
dinal members are hit, this may result in suffi-
ciently high levels of vehicle deceleration.
Depending on the apparent type of accident and
the detected deployment situation, Emergency
Tensioning Devices and/or air bags can supple-
ment the protection offered by a correctly worn
seat belt.
When enabled, an air bag can provide additional
protection for the respective vehicle occupant.
Potential protection provided by each air bag:
Knee air bag: thigh, knee and lower leg
R
Driver's air bag, front passenger air bag: head
R
and ribcage
Window air bag: head
R
Side air bag: ribcage, also pelvis for front seat
R
occupants
The side air bag of the AMG Performance seat
provides possible protection for the ribcage.
However, no system available today can com-
pletely eliminate injuries and fatalities in every
accident situation. In particular, the seat belt and
air bag generally do not protect against objects
penetrating the vehicle from the outside. It is also
not possible to completely rule out the risk of
injury caused by the air bag deploying.
49
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