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:
Under the Hood
The 640i is powered by a 315-horsepower, turbocharged 3.0-liter six-cylinder
engine. Its peak torque rating is 332 pounds-feet. BMW cites a zero to 60 mph
time of 5.5 seconds for both the coupe an ...
Switching the system on/off
Press the left or right side of the button
on the CD/DVD player in the rear for the
respective page.
Rear entertainment and screens are switched
on/off.
After switching off the ignition, ...
Having possible commands read aloud
You can have the available commands read out
loud for you: ›Voice commands‹
For example, if the "Settings" menu is displayed,
the commands for the settings are read out loud. ...
