a8 reikalai, bet ir čia gal tas pats:
https://www.audiworld.com/forums/a8-s8-d3-platform-discussion-60/heater-fan-speed-changes-its-own-2895547/

Adaption channel 22
Basic setting ex factory 000
Adaption of fresh air blower characteristic (phase-in from December 2002).
- At setting 0 the fresh air blower runs at the speed assigned to that coding.
- At setting 1 the fresh air blower runs at a somewhat lower speed across the full characteristic line.
- At setting 2 the fresh air blower runs at a somewhat higher speed across the full characteristic line. )Corresponds to the characteristic stored for the USA coding.)

šiaip kaip ir logiška būtų, nes tikrai tyliau pasidaro mašinoj, nes kai parkuojuosi, gi visada pasitylinu muziką, kad geriau matyti..