Window Curtain Air Bags; Occupant Classification System (Ocs) - Mercedes-Benz GLA 250 2019 Operator's Manual

Window curtain air bags

Window curtain air bags : are integrated into
the side of the roof frame and deployed in the
area from the A-pillar to the C-pillar.
When deployed, the window curtain air bag
enhances the level of protection for the head.
However, it does not protect the chest or
arms.
If the restraint system control unit detects a
side impact, the window curtain air bag is
deployed on the side on which the impact
occurs.
If the system determines that they can offer
additional protection to that provided by the
seat belt, a window curtain air bag may be
deployed in other accident situations
( page 51).
Y
Occupant Classification System
(OCS)
Introduction
The Occupant Classification System (OCS) cat-
egorizes the person in the front-passenger
seat. Depending on that result, the front-
passenger front air bag and front-passenger
knee bag are either enabled or deactivated.
The system does not deactivate:
the side impact air bag
R
the window curtain air bag
R
the Emergency Tensioning Devices
R
Occupant safety
Requirements
To be classified correctly, the front passenger
must sit:
with the seat belt fastened correctly
R
in an almost upright position with their back
R
against the seat backrest
with their feet resting on the floor, if possi-
R
ble
If the front passenger does not observe these
conditions, OCS may produce a false classifi-
cation, e.g. because the front passenger:
transfers their weight by supporting them-
R
selves on a vehicle armrest
sits in such a way that their weight is raised
R
from the seat cushion
If it is absolutely necessary to install a child
restraint system on the front-passenger seat,
be sure to observe the correct positioning of
the child restraint system. Never place objects
under or behind the child restraint system, e.g.
a cushion. The entire base of the child
restraint system must always rest on the seat
cushion of the front-passenger seat. The back-
rest of the forward-facing child restraint sys-
tem must lie as flat as possible against the
backrest of the front-passenger seat.
The child restraint system must not touch the
roof or be subjected to a load by the head
restraint. Adjust the angle of the seat backrest
and the head restraint position accordingly.
Only then can OCS be guaranteed to function
correctly. Always observe the child restraint
system manufacturer's installation and operat-
ing instructions.
Occupant Classification System opera-
tion (OCS)
PASSENGER AIR BAG ON indicator lamp
:
; PASSENGER AIR BAG OFF indicator lamp
47
Z