16-1 Driver's seat heating
* Models without seat ventilation
**No longer in use, gradual change
*** Gradual change
16-2 Driver's seat ventilation
* Models with seat ventilation
16-3 Passenger seat heating
* Models without seat ventilation
** Code cable, passenger seat
***No longer in use, gradual change
**** Gradual change
16-4 Passenger seat ventilation
* Models with seat ventilation
(The original article is available on the website «AudiManual»)