Audi A4   Driving tips   Towing a trailer  Removable towing bracket
Applies to vehicles: with removable towing bracket
Setting the spring mechanism to the "ready" position (if required)
Insert the key -4- Fig. 1 for locking the ball joint into the lock on the knob and turn it clockwise.
Pull out the knob in direction -a-, hold and turn in direction -b- until the locking ball -5- engages WARNING!.
Inserting the ball joint
With the spring mechanism in the "ready" position, insert the ball joint into the mounting fixture and push it upwards Fig. 2 in the direction indicated (arrow) WARNING!. The spring mechanism should then engage automatically with an audible click.
Lock the ball joint by turning the key anti-clockwise.
Take out the key and press the cover cap provided onto the lock.
Continued Link.
WARNING!
  • If it is not possible to set the spring mechanism to the "ready" position as described above, please contact a qualified workshop and, for safety reasons, do not use the ball joint.
  • To avoid injury, keep your hands away from the knob and the cover piece when inserting the ball joint into the mounting fixture.
Note
Make sure that the knob can turn freely when the ball joint is inserted.

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