cliffcoggin

My guess is that one of the locks has not operated fully. To be sure you should get the car scanned on a decent code reader.

As Gareth suggested, volts not amps would make more sense.

12 amps? That would be double the power of a headlight. Even 3 amps (36 watts) would be a seriously bright reversing lamp.

Please let us know the outcome.

If you had searched these forums John, you would have seen this: https://www.audiownersclub.com/forums/topic/24906-alternator-failure-related-to-mild-hybrid-system

Harold. What is the point of twice copying the OP's post into your own reply, especially without adding any text of your own? I have hidden your post.

Glad to read it.

The error needs to be reset using a decent code reader such as VCDS and OBD11 etc. A cheap reader may not be able to do that. Alternatively take a trip to a dealer or preferably a VAG specialist.

Thanks for letting us know.

Coding of the new battery is more than just desirable, it is essential to avoid buying new batteries every six months.

Any progress on this Nigel?

Evidently Boldrick is happy to accept advice from the forum but is not prepared to give anything in return. Oh well, that's another time waster for the blocked list.

What of it? Whether it has one, two, or twenty fans they all depend on the fan module.

Please let us know the outcome.

Any progress on this Allen?

So it's a mild hybrid. See this topic which seems similar to yours, though has not shown a resolution yet. https://www.audiownersclub.com/forums/topic/29907-mysterious-lightshow-and-scary-consequences/#comment-129146 See also this topic which may or may not be related to yours: https://www.audiownersclub.com/forums/topic/24906-alternator-failure-related-to-mild-hybrid-system

I assume there is a tolerance or limit of +/- x psi before the warning light is triggered. I suppose you could establish that limit by progressively letting the pressure down. Consider this, many years ago it was normal to have a gauge on the dashboard for engine oil pressure, but it was eventually realised that few people could interpret the readings, so the gauge was replaced by a warning light. The same was true of dynamo voltage. Modern TPMS systems are directly analogous to those situations.

David. Is yours a hybrid power train?

I can't answer your question, but I do wonder why you want that data displayed somewhere. Surely all you need to know while driving is whether the pressures are wrong, i.e. have they changed since you set them?

Martin. It's likely the fan control module has failed and needs to be replaced. It is sometimes mounted on or near the radiator.

Damon. I have merged your two identical topics to keep all responses in one place.

I daresay Audi would do it for a considerable price. There are online suppliers of maps but be aware that many are sketchy traders. There was one company recommended on the forum some months ago, but I don't recall its name. A forum search should find it.

I believe visual inspection is the best test. While a completely broken wire can be found with a continuity test, the damage can be as slight as cracked insulation that only shorts out as the wire chafes against metal during door opening.

Being a lazy driver I like the deceleration from electric regeneration in my non Audi car, but it takes a little getting used to not applying the brakes as often as I would in a liquid fuelled car. That highlights a minor problem in many EVs: the brakes have a greater tendency to suffer from rust because they don't get the usage that would otherwise keep them free in petrol or diesel cars. They never seize of course, but it can lead to some inconsistency in braking effort unless exercised often.

The driver's door lock is the master that controls the other doors.