I have a customer with the above, starts and drives OK, We have the battery warning (charge) light on after a few seconds running , no fault codes in any module but when looking in engine control the Load signal (MVB 101) is consistent with electrical load around 40 - 60%, the generator power (MVB100) in watts is showing as 0W !
We appear to have a sensible charge voltage (14.3v) at all times engine running.
My question is are we looking at an alternator fault or wiring to either body control / engine modules (not yet checked) but the sting in the tail is - the warning light goes out when intermittent wipe is switched on (not normal speed just intermittent).
Returns back on when switched off !!

Is there something I am missing here before digging deeper (like a service warning) or do we have a genuine fault ?

Interesting fault.Have you checked actual voltage at the alternator terminal and alternator body earth?Just in case there is any volt drop on the system.Also is the car not still under warranty?I would have thought at least 3 years?

Not checked actual,voltage at source yet, rain stopped play so retreated to gather wiring Ingram etc for further look later in week.

Yes it's still under warranty with only 6500 miles but as is the case more and more round here, the nearest dealer is not close and lead time for work is over 2 weeks so customers are happy to pay for work.

Will report back when I get more hance with it, just strange with the wiper fault !

Just a thought John!

Check the bonnet catch micro switch for water ingress / fault!

Use to wreek havoc on Audi's causing oil pressure warning & instrument faults of all things.

Try disconnecting it if you can & see if your symptoms change.