airbag off MERCEDES-BENZ C300 4MATIC 2008 W204 Owner's Manual

39 Safety and Security
Occupant safety
When you sell your vehicle we strongly
urge you to give notice to the subsequent
owner that it is equipped with an SRS by
alerting them to the applicable section in
the Operator’s Manual.
Front air bags
1Driver air bag
2Front passenger front air bag
The front air bags are designed to provide
increased protection for the driver and
front passenger against the risk of injuries
to the head and thorax.
Driver and front passenger front air bag are
deployed:
in the event of certain frontal impacts

if impact exceeds a preset deployment
threshold

if the system determines that airbag
deployment can offer additional pro-
tection to that provided by the seat belt

depending on whether the seat belt is
in use

independently of the front side impact
air bags, rear side impact air bags*
and/or the window curtain air bags.

For your protection and the protection
of others, when scrapping the air bag
unit or emergency tensioning device,
our safety instructions must be fol-
lowed. These instructions are available
from your authorized Mercedes-Benz
Center.

Given the considerable deployment
speed, required inflation volume, and
the textile structure of the air bags,
there is the possibility of abrasions or
other, potentially more serious injuries
resulting from air bag deployment.
Warning!G
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
deployment of the front side impact air bags
or the rear side impact air bags. Contact an
authorized Mercedes-Benz Center for avail-
ability.
iThe front air bags in this vehicle have been
designed to inflate in two stages. This allows the
air bag to have different rates of inflation that are
based on the rate of relevant vehicle decelera-
tion as assessed by the air bag control unit.
On the front passenger-side, the front air bag de-
ployment is additionally influenced by the pas-
senger’s weight category as identified by the
Occupant Classification System (OCS)
(
page 41).
The lighter the front passenger-side occupant,
the higher the vehicle deceleration rate required
for the second stage inflation of the air bag.

393 Practical hints
What to do if …?
Display Possible cause/consequencePossible solution
Front Passenger
Airbag Disabled
See Operator’s Manu-
alFront passenger front air bag is
deactivated while driving even
though an adult or someone
larger than a small individual is
occupying the front passenger
seat. Forces acting on the seat
may make the system sense a
decrease in weight.Stop the vehicle in a safe location as soon as possible and check the front
passenger seat for the following:
Switch off the ignition (page 82).
Have the front passenger vacate the seat and exit the vehicle.
Keep the seat unoccupied, close the front passenger door and switch
on the ignition (
page 82).
Monitor the
5/indicator lamp right of the instrument cluster
(
page 45) and the multifunction display in the instrument cluster
(
page 151) for the following:
(Continued on next page)

395 Practical hints
What to do if …?
Display Possible cause/consequencePossible solution
Front Passenger
Airbag Enabled
See Operator’s Manu-
alFront passenger front air bag is
activated while driving even
though a child, small individual,
or object below the system’s
weight threshold is on the front
passenger seat, or the front pas-
senger seat is empty. Objects
on the seat or forces acting on
the seat may make the system
sense supplemental weight.Stop the vehicle in a safe location as soon as possible and check the front
passenger seat for the following:
Switch off the ignition (page 82).
Remove child and child restraint from front passenger seat and properly
secure the child in rear seat employing the child restraint if necessary.
Make sure no objects which apply forces to the seat are present (e.g.
objects such as books, briefcases etc. lodged behind or around the
seat, head restraints pushing against roof, etc.). The system may recog-
nize such forces as supplemental weight and sense that an occupant on
the front passenger seat is of a greater weight than actually present.
Keep the seat unoccupied, close the front passenger door and switch
on the ignition (
page 82).
Monitor the
5/indicator lamp right of the instrument cluster
(
page 45) and the multifunction display in the instrument cluster
(
page 151) for the following:
(Continued on next page)