The belt tensioners are activated by sensors during severe frontal, side and rear collisions. They
tighten the seat belts against the direction in which they are pulled. A loose seat belt is retracted,
which can reduce the forward movement or the movement of the vehicle occupants in the direction
of the impact. The belt tensioner works together with the airbag system. If the side airbags are not
activated, the belt tensioner will not be activated if the vehicle rolls over.
A fine dust may be produced when the airbags are triggered. This is quite normal and does not
mean that there is a fire in the vehicle.
Belt tension limiter
The belt tension limiter reduces the pressure exerted by the seat belt on the body during an
accident.
All safety requirements must be observed when the vehicle or components of the system are
scrapped. Qualified workshops are familiar with these requirements ⇒ Service and disposal of belt
tensioners.
Service and disposal of belt tensioners
First read and observe the introductoryinformation and safety warnings⇒
Introduction
Seat belts may become damaged during any work on the belt tensioners or while removing or
refitting any vehicle parts in conjunction with any other repair work. This damage will not always be
noticeable. The consequence may be that the belt tensioners could function incorrectly, or not
function at all, in the event of an accident.
Regulations must be observed to ensure that the effectiveness of the belt tensioner is not reduced
and that removed parts do not cause any injuries or environmental pollution. Qualified workshops
are familiar with these requirements.
WARNING
The risk of severe or fatal injuries may be increased if the seat belts, automatic belt retractors
and belt tensioners are not used correctly, or if they are repaired by a non-professional. As a
result, the belt tensioners may not be triggered when they should, or they may be triggered
unexpectedly.
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Any repairs, adjustments or removal and refitting of parts in the belt tensioners or seat
belts should always be carried out by a qualified workshop and never by yourself
⇒ Accessories, modifications, repairs and renewal of parts.
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Belt tensioners and automatic belt retractors cannot be repaired. They must be replaced.
The airbag modules and belt tensioners may contain perchlorate. Please comply with
legislation regarding disposal.
Airbag system
Introduction
This chapter contains information on the followingsubjects:
⇒ Types of front passenger front airbag system
⇒ Indicator lamps
⇒ Description and function of the airbags
⇒ Front airbags
⇒ Switching the front passenger front airbag on and off manually using the key-operated switch
⇒ Side 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.
Additional information and warnings:
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Driving tips ⇒ Driving tips
Central locking system ⇒ Central locking system
Correct sitting position ⇒ Adjusting the seat position
Seat belts ⇒ Seat belts
Child seats (accessories) ⇒ Child seats (accessories)
Cleaning and caring for the interior ⇒ Cleaning and caring for the interior
Accessories, modifications, repairs and renewal of parts ⇒ Accessories, modifications, repairs
and renewal of parts
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Consumer information ⇒ Consumer information