See also:

Removing: Electrical* head restraints
Note Do not remove the rear head restraints. To avoid damage, they can only be installed by your service center. Removing Only remove the head restraint if no one will be sitting in the seat ...

Switching off automatically
The system switches off and the LED goes out: After approx. 160 ft/50 m when driving forward. Above approx. 22 mph/36 km/h when driving forward. Switch on the system again if necessary. ...

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 gently. The syste ...