Mercedes-Benz 2008 CL550 Automobile User Manual


 
46
Safety and Security
Occupant safety
Front air bags
1 Driver air bag
2 Front passenger front air bag
3 Knee bag
Driver and front passenger front air bags
are deployed:
ț in the event of certain frontal impacts
ț if impact exceeds a preset deployment
threshold
ț independently of the side impact air
bags
The air bags will not deploy in impacts
which do not exceed the system’s deploy-
ment thresholds. You will then be protec-
ted by the fastened seat belts.
The front passenger front air bag will only
be deployed if:
ț the system, based on OCS weight sen-
sor readings, senses that the front
passenger seat is occupied
ț the 59 indicator lamp in
the center console is not lit
(
page 51)
ț the impact exceeds a preset deploy-
ment threshold
Knee bag
The knee bag 3 is located on the
driver-side lower instrument panel. It is
designed to operate together with the
driver air bag in certain frontal impacts
exceeding a preset threshold. The
knee bag 3 operates best in conjunction
with a properly positioned and fastened
seat belt.
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 decelera-
tion as assessed by the air bag control unit.
On the front passenger side, the front air bag de-
ployment is additionally influenced by the pas-
senger’s weight category as identified by the
Occupant Classification System (OCS)
(
page 48).
The lighter the front passenger side occupant,
the higher the vehicle deceleration rate required
for the second stage inflation of the air bag.