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Occupant safety
46
R
depending on whether the seat belt is in
use
R
independently of the front air bags
R
independently of the ETDs
The passenger head-thorax air bag 1 will
only deploy if the OCS senses that the pas-
senger seat is occupied and the impact
exceeds a preset deployment threshold.
The head-thorax air bags are not deployed in
side impacts which do not exceed the sys-
tem’s deployment threshold.
G
Warning!
Only use seat covers which have been
tested and approved by Mercedes-Benz for
your vehicle model. Using other seat covers
may interfere with or prevent the deploy-
ment of the head-thorax air bags. Contact
an authorized Mercedes-Benz Center for
availability.
Occupant Classification System
The Occupant Classification System (OCS)
automatically turns the passenger front air
bag and passenger-side knee bag on or off
based on the classified occupant weight cat-
egory determined by weight sensor readings
from the passenger seat.
The system does not deactivate the passen-
ger head-thorax air bag and the Emergency
Tensioning Devices (ETDs).
Occupants must sit with the seat belt prop-
erly fastened in a position that is as upright
as possible with their back against the seat
backrest and feet on the floor to be correctly
classified. If the occupant’s weight is trans-
ferred to another object in the vehicle (e.g. by
leaning on armrests), the OCS may not be
able to properly approximate the occupant’s
weight category.
i
If your seat, including the trim cover and
cushion, needs to be serviced in any way,
take the vehicle to an authorized Mer-
cedes-Benz Center.
Only seat accessories approved by Mer-
cedes-Benz may be used.
Both the driver and the passenger should
always use the 75 indicator
lamp as an indication of whether or not the
passenger is properly positioned.
G
Warning!
If the 75 indicator lamp illu-
minates when an adult or someone larger
than a small individual is in the passenger
seat, have the passenger re-position him-
self or herself in the seat until the
75 indicator lamp goes out.
In the event of a collision, the air bag control
unit will not allow passenger front air bag
deployment when the OCS has classified
the passenger seat occupant as weighting
as much as or less than a typical 12-month-
old child in a standard child restraint or if
the passenger seat is classified as being
empty.
When the OCS senses that the passenger
seat occupant is classified as being up to
or less than the weight of a typical
12-month-old child in a standard child
restraint, the 75 indicator
lamp will illuminate when the engine is
started and remain illuminated, indicating
that the passenger front air bag is deacti-
vated.
When the OCS senses that the passenger
seat is classified as being empty, the
Safety and security