System Self-Test - Mercedes-Benz CLA Operator's Manual

Occupant safety
48
To be classified correctly, the front passenger
must sit:
with the seat belt fastened correctly
R
in a position that is as upright as possible
R
with their back against the seat backrest
with their feet on the floor
R
The OCS weight sensor reading is affected if
the occupant's weight is transferred, e.g. by
leaning on the armrest.
If the front-passenger seat, the seat cover or
the seat cushion are damaged, have the
necessary repair work carried out at a
qualified specialist workshop.
For safety reasons, Mercedes-Benz
recommends that you only use seat
accessories that have been approved by
Mercedes-Benz.
Both the driver and the front passenger
should always observe the 45
indicator lamp to determine whether or not
the front passenger is positioned correctly.
Observe also the air bag display messages
that can be displayed in the instrument
cluster ( page 222).
Y
If the driver's air bag deploys, this does not
mean that the front-passenger front air bag
will also deploy.
The OCS may have detected that the seat:
is empty or occupied by the weight of a
R
typical child up to twelve months old,
seated in a child restraint system
is occupied by a small individual, such as a
R
young teenager or a small adult
is occupied by a child in a child restraint
R
system whose weight is greater than that
of a typical twelve month old child.
These are examples of when the OCS
deactivates the front-passenger front air bag.
Deactivation takes place although the
collision fulfills the criteria for deploying the
driver's air bag.

System self-test

G
WARNING
If the 4 5 indicator lamp does not
illuminate, the system is not functioning. You
must contact an authorized Mercedes-Benz
Center before seating any child on the front
passenger seat.
G WARNING
Never place anything between seat cushion
and child seat (e.g. a pillow), since it reduces
the effectiveness of the OCS. The underside
and rear side child restraint system must be
placed entirely on the seat cushion and the
backrest of the front-passenger seat
backrest.
If necessary, adjust the tilt of the passenger
seat backrest.
An incorrectly mounted child seat could cause
injuries to the child in case of an accident,
instead of increasing protection for the child.
Follow the manufacturer's instructions for
installation of child restraint systems.
If you turn the SmartKey to position 1 or 2 in
the ignition lock, the 45 indicator
lamp illuminates.
If an adult occupant is sitting properly on the
front-passenger seat and the OCS classifies
the occupant as an adult, the 45
indicator lamp illuminates and goes out again
after approximately six seconds.
If the seat is not occupied and the OCS
classifies the front passenger seat as being
unoccupied, the 45 indicator lamp
will illuminate and not go out.
For more information, see "Problems with the
Occupant Classification System"
( page 49).
Y