Mercedes-Benz 2009 SLR McLaren Roadster Automobile User Manual


 
66
Safety and Security
Occupant safety
The air bags will not deploy in impacts
which do not exceed the system’s
deployment thresholds. You will then be
protected by the fastened seat belts.
The passenger air bag will only be de-
ployed if:
ț the system, based on the OCS weight
sensor readings, senses that the pas-
senger seat is occupied
ț the PASSENGER AIR BAG OFF indicator
lamp in the lower part of the center
console is not lit (
page 70)
ț the impact exceeds a preset
deployment threshold
Knee air bags
1 Knee air bag, driver’s side
2 Knee air bag, passenger side
The knee air bags are located on the lower
instrument panel. They are designed to op-
erate together with the front air bags in
certain frontal impacts exceeding a preset
threshold. The knee air bags operate best
in conjunction with a properly positioned
and fastened seat belts and when the foot-
well is kept clear of objects.
i
The front air bags in this vehicle have been
designed to inflate in two stages. This allows
the air bag to have different rates of inflation that
are based on the rate of relevant vehicle deceler-
ation as assessed by the air bag control unit.
On the passenger side, the front air bag
deployment is additionally influenced by the
passenger’s weight category as identified by the
Occupant Classification System (OCS)
(
page 67).
The lighter the passenger side occupant, the
higher the vehicle deceleration rate required for
the second stage inflation of the air bag.