In the meantime I agree remapping will have had no effect on the Alternator failure. This device is belt driven and either acts as a starter to kick start the engine when it stops in traffic or charges the battery when the engine is running. It charges the 48v battery which then charges the 12v battery which runs all the computers , locks, steering, grearbox, heated seats, air con etc. so you can imagine it does not take long to discharge. My dealer has seen 3 failure, there are 5000 VW /Audi dealers so that could be 15000 vehicles so we need to get the message out.