7-1 ECM, ABS control unit
* see engine control diagram
* * see AT diagram
7-2 Headlight leveling control unit, steering column control unit
7-3 Control unit in the instrument panel insert, on-board power supply control unit, steering column control unit
7-4 Control unit for seat and steering column adjustment with memory function, trailer detection, parking assistance, audio system and navigation system
7-5 Door control units
7-6 Climate control units and additional heater, central control unit for comfort systems
* see engine control diagram
7-7 Audio system, navigation system, telephone
* models with NS-LOW navigation system
** models with RNS-E navigation system
*** models with RNS-low audio navigation system
**** models with audio system, produced since November 2006.
(This article was copied from the website «AudiManual»)