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Seat belts
Belt pretensioners*
How the seat belt tensioner works
During a frontal collision, the seat belts on
the front seats are retracted automatically.
The seat belts for the occupants in the front
seats are equipped with belt tensioners. Sen-
sors will trigger the belt pretensioners during
severe head-on, lateral and rear collisions
only if the seat belt is being worn. This re-
tracts and tightens the seat belts, reducing
the forward motion of the occupants.
The seat belt tensioner can be triggered only
once.
The belt tensioners will not be triggered in
the event of light frontal and side collisions,
if the vehicle overturns, or in situations
where no large forces act on the front, side or
rear of the vehicle.
Note
●
If the seat belt tensioners are triggered, a
fine dust is produced. This is normal and it is
not an indication of fire in the vehicle.
●
The relevant safety requirements must be
observed when the vehicle or components of
the system are scrapped. Specialised work-
shops are familiar with these regulations,
which are also available to you.
Service and disposal of belt
tensioners
The belt tensioners are components of the
seat belts that are installed in the seats of
your vehicle. If you work on the belt tension-
ers or remove and install parts of the system
when performing other repair work, the seat
belt may be damaged. The consequence may
be that, in the event of an accident, the belt
tensioners function incorrectly or may not
function at all.
So that the effectiveness of the seat belt ten-
sioner is not reduced and that removed parts
do not cause any injuries or environmental
pollution, regulations, which are known to
the specialised workshops, must be ob-
served.
WARNING
●
Improper use or repairs not carried out by
qualified mechanics increase the risk of se-
vere or fatal injuries. The belt tensioners may
fail to trigger or may trigger in the wrong cir-
cumstances.
●
Never attempt to repair, adjust, remove or
install parts of the belt tensioners or seat
belts.
●
The seat belt tensioner, seat belt and auto-
matic retractor cannot be repaired.
●
Any work on the belt tensioners and seat
belts, including the removal and refitting of
system parts in conjunction with other repair
work, must be performed by a specialised
workshop only.
●
The belt tensioners will only provide pro-
tection for one accident and must be changed
if they have been activated.
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Technical specifications
AdviceOperationSafetyThe essentials
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