Hi Gents,
Seems have to share my experience on above.
Recieved a letter just 2 days before my oil change booking. On 27.06th been told by London based dealership, starter alternator issue will also be resolved. Happy days! Two weeks latter got a dash board message start stop system unavailable, contact workshoop.
Presume service just disabled features of Mild hybrid system till proper parts arrived. Funny enough been told by service operative - trouble resolved.
Present mild hybrid audi system is responsible to switch of engine when not needed (like downhill) to charge lion battery. Or when brakes are applied. 12 v battery. Same time when engine is switched off, like downhill, that lion battery ennergy will be consumed to maintain all neccesery safety features working.
Obviously there are some troubles for the electrical system to chardge additional battery from same generator.
Just thinking of it.