See also:

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

The concept
This system issues a warning at speeds above approx. 40 mph/65 km/h if the vehicle is about to leave the lane on roads with lane markings. The steering wheel begins vibrating lightly. The system ...

Switch off any functions that are not currently needed
Functions such as seat heating and the rear window defroster require a lot of energy and consume additional fuel, especially in city and stopand- go traffic. Therefore, switch off these functio ...