Mercedes-Benz 280 E 1979 Owner's Manual page 18

Operation of belts with inertia reel:
The safety belt inertia reel stops
the belt from unwinding further in
case of vehicle deceleration in any
direction or if the belt is pulled out
quickly.
Functional test:
The locking function of the inertia
reel can be tested by braking,
driving around a bend or by pulling
the belt out quickly.
Note:
No safety belt can be used for more
than one person. Belts are not
intended for children.
After an accident, inspect the safety
belts and replace them, if required.
The belt anchors in the vehicle
should also be checked.
Belt webbing must not be routed
via sharp edges.
No modifications which may affect
the efficiency of the belts must be
made.
For cleaning and care of belt
webbing, refer to page 51.
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