Mark2

That is interesting and is probably explained as your failures were sudden-straight to red no yellow stage. The yellow stage indicates battery charge degradation is gradual I.e. the charge is not being replaced. Lack of belt tension maybe gave intermittent charge- no charge red light, charge no light at all. This is my take but am no expert.

This is a question we have all been asking. The Vehicle Construction Agency are not interested, it yesterday’s news, it’s old technology which will be redundant by 2030 when we will all need driving electric- in your dreams!

I have heard but have nothing in writing that the BSG failure is due to water ingress and replacements have been modified. however your dealer has not confirmed whether the BSG is charging or not. When mine failed I drove 5 miles and a breakdown truck patched in another battery to allow me to drive to his garage, which you can do but the battery is not charging so eventually thus will run down.

That is just the sort of story I would expect from Audi, how is it that other dealers get it so wrong?

There was no recall. Audi just waited till the alternator failed thn took responsibility.

7 years starts from the car registration

If your battery is only 2 years old I cannot think it has failed unless one cell has gone down. Best get it professionally checked and show Audi the report.

When I had my alternator failure, the battery drained but this is a lead/acid type and can take a full discharge and recover. I think the dealer is swinging this so a professional test should prove it.

That is not the affected part number. The one off my invoice is A4N1 903 028 B If you check the earlier posts this is the one with the extended warranty so you may not be covered

I am sorry to say but the Audi technician only has the capability to read off a computer screen and not use his brain. however he has diagnosed the starter generator as the failure. you need to look back at old posts in this string and yiu will find the part number and the Audi extended warranty which you can present to them.

If anyone is desperate I for have a spare Audi BSG sitting on a shelf in my garage, I am happy to sell it to anyone as long as they pay the shipping cost and replace it with their new one when it arrives

Did they check the BSG is charging the battery, if not why not?

Frankly what has a service history got to do with a known component failure. There have not been any service recalls fir this component so how can Audi suggest lack of service history is a problem?

The alternator went at about 35000 miles, whole car died on a roundabout no steering no door locks etc. since replacement of the starter generator no probs in another 10,000 miles.

I used to use Bristol but did not like their attitude so moved to Bath-same group though but nicer people.