Leaderboard

Yes, agreed. I don't have the capacity to test this without doing a lot of research first on limits and Continuous discharge thresholds etc. Having a quick look at the info on Halfords, they do it at their autocentre and hook it up to a machine which apparently tests various things including "Cranking capability" which is essentially a load stress test... As it's free I'll give it a go. Going back to the Throttle body though, I did manage to get it to stick a couple of times when manually actuating it, so I've got a second hand eBay one on the way to pop on and try out. (Was only £35 so worth eliminating I think!) Al

glad you found the culprit, but what a pain.plenty of soaking beforehand to get those nuts and bolts off

Update: Audi discontinued these in 2021; they were £580 when available. I have found a breaker with a used one for £150 delivered, and have asked for pics. If anyone is interested, the correct part number is 038253031L