See also:

Deactivating HDC
Press the button again and the LED goes out. HDC is automatically deactivated above approx. 37 mph/60 km/h. ...

Shoulder support
Also supports the back in the shoulder area: Results in a relaxed seating position. Reduces strain on the shoulder muscles. ...

Replacing the batteries
No rechargeable batteries Do not use rechargeable batteries, as damage may result from the substances in the batteries. 1. Remove the cover. Press on the cover, arrow 1, and push forward, ...