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Seat belts 27
Safety First Operating instructions Practical tips Technical Data
WARNING
Never adjust the belt height while the vehicle is in motion.
Seat belt tensioners
Automatic belt retainer, belt tension device, belt tension
limiter
Seat belts are part of the vehicle safety concept page 33 and consist of the
following important functions:
Automatic belt retainer
Every seat belt is equipped with an automatic belt retainer on the shoulder
belt. If the belt is pulled slowly or during normal driving, the system allows for
total freedom of movement on the shoulder belt. However, during sudden
braking, during travel in mountains or bends and during acceleration, the
automatic belt retainer on the seat belt is locked is pulled quickly.
Belt tension devices
The seat belts on the front seats and the outer seats of the second row are
equipped with belt tension devices.
Sensors will trigger the belt tension devices during severe head-on, lateral
and rear collisions and retract and tighten the seat belts. If the seat belt is
loose, it is retracted to reduce the forwards movement of occupants or move-
ment in the direction of the collision. The belt tension device works in combi-
nation with the airbag system. The belt tension device will not be triggered in
the event of the vehicle overturning if the side airbags are not deployed.
If the belt tension device is triggered, a fine dust is produced. This is normal
and it is not an indication of fire in the vehicle.
Belt tension limiter
The belt tension limiter reduces the force of the seat belt on the body in the
event of an accident.
Note
The relevant safety requirements must be observed when the vehicle or
components of the system are scrapped. A qualified workshop is familiar with
these requirements page 27.
Service and disposal of belt tension devices
If you work on the belt tension devices or remove and install other parts of the
vehicle when performing other repair work, the seat belt may be damaged.
The consequence may be that, in the event of an accident, the belt tension
devices function incorrectly or not at all.
So that the effectiveness of the belt tension device is not reduced and that
removed parts do not cause any injuries or environmental pollution, regula-
tions must be observed. These requirements are known to qualified dealer-
ships.
WARNING
Improper handling and homemade repairs of seat belts, automatic belt
retainers and tension devices increase the risk of sustaining severe or fatal
injuries. The belt tension device may fail to trigger or may trigger in the
wrong circumstances.
x Never attempt to repair, adjust or remove or install parts of the belt
tension devices or seat belts. Any work must be performed by a qualified
workshop only page 285.
x Belt tension devices and automatic belt retainers cannot be repaired
and must be replaced.
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