Adjusting the height: electrical
The head restraints on the left and right rear passenger seats extend automatically whenever a passenger in the rear seat fastens his or her safety belt.

In addition, the height of the head restraint can be adjusted electrically.
Extending the head restraint
To prevent possible personal injury and property damage, always ensure that the area above the head restraints is clear and unobstructed before extending them upward.
The height adjustment of the head restraint is deactivated when the safety switch for the rear windows, has been pressed.
See also:
Entertainment
Operation of the radio, CD equipment and external audio devices as well as their
tone settings are described in this chapter. ...
Vehicle information
Owner's Manual
Computer
Vehicle
...
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 ...
