Mercedes-Benz 2013 GL Class - Manual (Page 49)

high vehicle deceleration in a longitudinal
direction, the front air bags are deployed.
When a child restraint system is installed on
the front-passenger seat and the 4
PASSENGER AIRBAG OFF indicator lamp in
the center console does not light up:
R
a child restraint system without a
transponder for the air bag deactivation
system is installed or
R
a child restraint system with a transponder
has not been installed properly.
Your vehicle has adaptive, two-stage front air
bags. In the event of a collision, the air bag
control unit evaluates the vehicle
deceleration. In the first deployment stage,
the front air bag is filled with enough
propellant gas to reduce the risk of injuries.
The front air bag is fully deployed if a second
deployment threshold is exceeded within a
few milliseconds.
The deployment of front-passenger front air
bag ; is also influenced by the weight
category of the front passenger, which is
determined by the Occupant Classification
System (OCS) (
Y page 49).
The lighter the passenger side occupant, the
higher the vehicle deceleration rate required
(predicted at the start of the impact) for
second-stage inflation of the front-passenger
front air bag. In the second stage, the front
air bags are inflated with the maximum
amount of propellant gas available.
The front air bags are not deployed in
situations where a low impact severity is
predicted. You will then be protected by the
fastened seat belt.
Front-passenger front air bag ; will only
deploy if:
R
the system, based on the OCS weight
sensor readings, has detected that the
front-passenger seat is occupied.
R
the 45 indicator lamp on the center
console is not lit (
Y page 49).
R
the air bag control unit predicts a high
impact severity.
Driver's knee bag
Driver's knee bag : deploys under the
steering column. The driver's knee bag is
always deployed along with the driver's front
air bag. The driver's knee bag is designed to
operate together with the front air bags in
frontal impacts if certain thresholds are
exceeded. The driver's knee bag operates
best in conjunction with correctly positioned
and fastened seat belts.
The driver's knee bag increases protection of
the driver against:
R
knee injuries
R
thigh injuries
R
lower leg injuries
Side impact air bags
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 deployment of
the side impact air bags. Contact an
authorized Mercedes-Benz Center for
availability.
G
WARNING
The pressure sensors for side impact air bag
control are located in the doors. Do not
modify any components of the doors or door
trim panels including, for example, the
addition of door speakers.
Improper repair work on the doors or the
modification or addition of components to the
Occupant safety
47
Safety
Z