See also:

Distance to back of head: electrical head restraints
The head restraint is automatically repositioned when the shoulder support is adjusted. ...

Safety belt reminder for the driver's and front passenger seat
The indicator lamp flashes or lights up and a signal sounds. Make sure that the safety belts are positioned correctly. The safety belt reminder is active at speeds above approx. 5 mph/8 km/h ...

Remove unnecessary cargo
Additional weight increases fuel consumption. ...