Mercedes-Benz 2013 GL X166 Operator's Manual page 53

OCS is malfunctioning. The front passenger
front air bag will be deactivated in this case.
Have the system checked by qualified
technicians as soon as possible. Contact an
authorized Mercedes-Benz Center.
Only have the seat repaired or replaced at an
authorized Mercedes-Benz Center.
In order to ensure proper operation of the air
bag system and OCS:
Sit with the seat belt properly fastened in a
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position that is as upright as possible with
your back against the seat backrest.
When seated, a passenger should not
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position him/herself in such a way as to
cause the passenger's weight to be lifted
from the seat cushion as this may result in
the OCS being unable to correctly
approximate the passenger's weight
category.
Read and observe all warnings in this
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chapter.
If the SmartKey has been removed from the
ignition lock or is in position 0,
45 indicator lamp : does not light
up.
The Occupant Classification System (OCS)
categorizes the occupant on the front-
passenger seat using a weight sensor. The
front-passenger front air bag is deactivated
automatically for certain weight categories.
45 indicator lamp : shows you the
current status. If
45 indicator lamp : lights up, the
front-passenger air bag is disabled.
Occupant safety
The system does not deactivate:
the side impact air bag
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the window curtain air bag
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the Emergency Tensioning Devices
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To be classified correctly, the front passenger
must sit:
with the seat belt fastened correctly
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in a position that is as upright as possible
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with their back against the seat backrest
with their feet on the floor
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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.
Also observe the air bag display messages,
which appear in the instrument cluster
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( page 293).
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
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typical child up to twelve months old,
seated in a child restraint system
is occupied by a small individual, such as a
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young teenager or a small adult
is occupied by a child in a child restraint
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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
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