See also:

Tone
Only treble and bass can be set in the rear. The settings are made separately for the left and right headphones. Operation is the same as for the front tone. ...

Rear
Rear Operation similar to front seat heating, without temperature distribution. ...

5 Series Gran Turismo
For 2010, BMW added a hatchback version of its rear-wheel-drive 5 Series, dubbed the 5 Series Gran Turismo, starting with a 550i "GT" powered by the same 400-hp, twin-turbo V-8 as the 55 ...