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Safety and Security
Occupant safety
Self-test Occupant Classification Sys-
tem (USA only)
After turning the SmartKey in the starter
switch to position 1 or 2 or pressing the
KEYLESS-GO* start/stop button once or
twice, the 75 indicator lamp
located in the center console illuminates. If
an adult occupant is properly sitting on the
front passenger seat and the system sens-
es the occupant as being an adult, the
75 indicator lamp will illumi-
nate and go out after approximately
6 seconds.
If the seat is not occupied and the system
senses the front passenger seat as being
empty, the 75 indicator lamp
will illuminate and not go out.
For more information, see the “Practical
hints” section (
୴ page 391).
ț Do not place objects under and/or
around the front passenger seat.
ț Do not hang anything from or attach any
items to the seats.
ț Do not stuff objects such as books be-
tween the middle console and the front
passenger seat.
ț Do not move the front passenger seat
backwards against stiff objects.
ț Sit properly belted in a nearly upright
position with your back against the seat
backrest.
ț Do not lean on the armrests or lift your-
self from the seat by using the handle
over the door as this may cause the OCS
to be unable to correctly approximate
the occupant weight category.
ț Only have the seat repaired or replaced
by an authorized Mercedes-Benz
Center.
ț Read and observe all warnings in this
chapter.
Warning! G
If the 75 indicator lamp should
not illuminate, the system is not functioning.
You must see an authorized Mercedes-Benz
Center before seating any child on the front
passenger seat.
Warning! G
Never place anything between seat cushion
and child seat (e.g. pillow), since it reduces
the effectiveness of the Occupant Classifi-
cation System. The bottom of the child seat
must make full contact with the passenger
seat cushion. An incorrectly mounted child
seat could cause injuries to the child in case
of an accident, instead of increasing protec-
tion for the child.
Follow the manufacturer’s instructions for
installation of child seats.
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