Mercedes-Benz Metris Operating Instructions Manual page 56

Occupant safety
54
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 is 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
Conditions
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 (OCS)
operation
PASSENGER AIR BAG OFF indicator lamp :
shows you whether the front-passenger front
air bag is deactivated.
X
Turn the SmartKey to position 1 or 2 in
the ignition lock.
The system carries out self-diagnostics.
The PASSENGER AIR BAG OFF indicator lamp
must light up for approximately six seconds.
The PASSENGER AIR BAG OFF indicator lamp
then displays the status of the front-passenger
front air bag. If the status of the front-
passenger front air bag changes while the
vehicle is in motion, an air bag display mes-
sage may appear on the instrument cluster:
in vehicles without steering wheel buttons
R
Y
( page 197)
in vehicles with steering wheel buttons
R
Y
( page 211)
When the front-passenger seat is occupied,
always pay attention to the PASSENGER AIR
BAG OFF indicator lamp. Be aware of the sta-
tus of the front-passenger front air bag both
before and during the journey.
If the PASSENGER AIR BAG OFF indicator
lamp:
lights up, the front-passenger front air bag
R
is deactivated. It will then not be deployed
in the event of an accident.
is not it, the front-passenger front air bag is
R
enabled. If, in the event of an accident, all
deployment criteria are met, the front-
passenger front air bag is deployed.
G
WARNING
If the PASSENGER AIR BAG OFF indicator
lamp is lit, the front-passenger front air bag