Troubleshooting
If there is a malfunction in the proactive occupant protection system, the message Proactive
occupant protection unavailable or Proactive occupant protection: function restricted is
shown permanently on the instrument cluster display.
Go to a qualified workshop and have the system checked.
Airbag system
Introduction
This chapter contains information on the followingsubjects:
⇒ Types of front passenger front airbag system
⇒ Indicator lamp
⇒ Description and function of the airbags
⇒ Front airbags
⇒ Switching the front passenger front airbag on and off
⇒ Side airbags
⇒ Curtain airbags
⇒ Knee airbags
The vehicle is equipped with a front airbag for the driver and front passenger. The front airbags can
provide front seat occupants with additional chest and head protection if the seat, seat belts, head
restraints and, in the case of the driver, steering wheel are adjusted and used correctly. Airbags are
meant only for additional protection. The airbags are not a substitute for seat belts. Seat belts must
always be worn, even when the front seats are equipped with front airbags.
The intelligent technology of the proactive occupant protection system cannot overcome
the laws of physics, and functions only within the limits of the system. Never let the extra
convenience afforded by the proactive occupant protection system tempt you into taking
any risks when driving. The system cannot prevent a collision. The system is not a
substitute for the full concentration of the driver.
•Adapt your speed and distance from the vehicles ahead to suit visibility, weather, road
and traffic conditions.
•The system cannot detect objects in all situations.
•The proactive occupant protection system does not react to people, animals, objects
crossing in front of the vehicle, or objects which are hard to make out.
•Reflective objects such as safety barriers, tunnel entrances, heavy rain and ice can
impair the function of the proactive occupant protection system and thus prevent it
from detecting a collision risk.
•Incorrect system activation can occur.
WARNING
Accidents and injuries can occur if the driver is distracted.
•Never change settings in the Infotainment system when the vehicle is in motion.
WARNING
Failure to observe illuminated warning lamps and text messages can lead to your vehicle
breaking down in traffic, and can cause accidents and serious injuries.
•Never ignore any illuminated warning lamps or text messages.
•Stop the vehicle as soon as it is possible and safe to do so.
WARNING
Failure to observe illuminated indicator lamps and text messages can lead to your vehicle
being damaged.
NOTICE
Description and function of the airbags
First read and observe the introductoryinformation and safety warnings⇒
Introduction
The airbags can protect vehicle occupants during frontal and side collisions by reducing their
movement in the direction of the collision.
When an airbag is triggered, it is inflated by a gas generator. This causes the airbag covers to
break, and the airbags inflate forcefully to cover their deployment zones within milliseconds. Once a
vehicle occupant wearing a seat belt starts to sink into the inflated airbag, the gas inside the airbag
starts to escape to cushion the occupant and slow down their movement. This can reduce the risk
of severe and fatal injuries. A triggered airbag will not always prevent other injuries from occurring,
such as swelling, bruising, burning and grazing. The deployment of the airbag can also produce
frictional heat.
Airbags provide no protection for the arms or lower body. Exception: in vehicles with a knee airbag,
the knee area of the driver will be protected.
The most important factors for triggering the airbag are the type of accident, the angle of impact,
the vehicle speed and the type of object with which the vehicle collides. Therefore, visible damage
to the vehicle does not always mean that the airbag should have been triggered.
Whether or not the airbag triggers is determined by the vehicle deceleration rate caused by the
collision and registered by the electronic control unit. If this rate is below the reference value
programmed into the control unit, the airbags will not be triggered, even though the vehicle may be
badly damaged as a result of the collision. Vehicle damage, repair costs or even the lack of vehicle
damage in an accident do not necessarily give an indication of whether an airbag should inflate or
not. It is not possible to define a range of vehicle speeds and reference values, since the
circumstances will vary considerably between one collision and another. It is therefore impossible to
cover every possible kind and angle of impact that would trigger the airbags. Important factors in
the triggering of the airbag include the nature (hard or softyf R I W K H R E M H F W W K D W W K H Y H K L F O H K L W V W K H
angle of impact, and the vehicle speed.
Airbags only serve as a supplement to the three-point seat belt in some accident situations when
the vehicle braking is sufficient to trigger the airbags. Airbags can only be triggered once and only
in certain situations. The seat belts are always there to provide protection in situations in which the
airbags are not triggered or have already been triggered. For example, if the vehicle collides with a
further vehicle following the initial collision, or is hit by another vehicle.
The airbag system is part of the vehicle's overall passive safety concept. The airbag system can
only work effectively when the occupants are wearing their seat belts correctly and have assumed a
proper sitting position ⇒ Sitting position.
Components of the vehicle safety concept
The following vehicle safety equipment makes up the vehicle's safety concept to reduce the risk of
severe and fatal injuries. Some of this equipment may not be fitted in your particular vehicle. It may
not be available at all in some countries.
•Optimised seat belts for all seats.
•Belt tensioners for the driver and front passenger and also on the rear outer seats if in
conjunction with side airbags.
•Belt tension limiter for the driver, front passenger and, if applicable, for the rear outer seats.
•Belt height adjuster for the front seats.
•Warning lamp and belt status display.
•Front airbags for driver and front passenger.
•Side airbags for the driver, front passenger and, if applicable, for the rear outer seats.
•Curtain airbags on the left and right.
•If applicable, knee airbag for the driver.
•Airbag indicator lamp .
•Indicator lamp PASSENGER AIR BAG in the upper section of the centre console.
•Indicator lamp PASSENGER AIR BAG in the upper section of the centre console.
•Control units and sensors.
•Whiplash-optimised and height-adjustable head restraints.
•Adjustable steering column.
•If applicable, anchor points for child seats on the rear outer seats and on the front passenger
seat.
•If applicable, securing points for the top tether for child seats.
Situations when the front, knee, side and curtain airbags will not be
triggered:
•If the ignition is switched off during a collision.
•If the level of deceleration measured by the control unit is too low during a collision at the front
of the vehicle.
•During a minor side collision.
•During rear collisions.