See also:

Backrest width
Change the width of the backrest using the side wings to adjust the lateral support. ...

Folding down the middle section
1. Fold in the middle head restraint. 2. Reach into the recess and pull the middle section forward. Folding down the middle section ...

The concept
The system is functional at speeds beginning at approx. 20 mph/30 km/h. It maintains the speed that was set using the control elements on the steering wheel. The system brakes on downhill gradie ...