wordsman Posted February 25, 2014 Report Share Posted February 25, 2014 My A8 isn't starting when it's very warm, like after a 1-2hr drive. My indie audi guys have replaced the starter motor, and then some relays, which sorted it for a couple of weeks. But it's happened again and going back in tomorrow. It's starting to feel like Groundhog Day. Is anyone aware of any known faults, or have any advice? thanks guys Link to comment Share on other sites More sharing options...
cruiser647 Posted February 25, 2014 Report Share Posted February 25, 2014 What's the symptoms? Does the engine churn or churn fast or slow? Link to comment Share on other sites More sharing options...
wordsman Posted February 25, 2014 Author Report Share Posted February 25, 2014 Everything lights up OK, but the engine doesn't turn over at all, complete silence. Link to comment Share on other sites More sharing options...
E-bmw Posted February 25, 2014 Report Share Posted February 25, 2014 (edited) Sounds suspiciously like a chassis earth missing to me. Try/clean/tighten EVERY under-bonnet earth around the engine/chassis/battery/alternator. Edited for typo! Edited February 25, 2014 by E-bmw Link to comment Share on other sites More sharing options...
cruiser647 Posted February 25, 2014 Report Share Posted February 25, 2014 Is everything OK when it's running? ie the headlights are bright, tail lights are OK and don't bring up any error messages on the dash? Link to comment Share on other sites More sharing options...
wordsman Posted February 25, 2014 Author Report Share Posted February 25, 2014 Yep no unusual behaviour apart from that, though I'll check the lights. No error messages, but when my mechanic plugged his laptop in initially it told him the problem was with the starter motor which they then replaced. Link to comment Share on other sites More sharing options...
drpellypo Posted February 28, 2014 Report Share Posted February 28, 2014 Collant temp sender? Although I've never seen a faulty one of these stop the car starting when warm; just cause a hard start. Link to comment Share on other sites More sharing options...
wordsman Posted March 1, 2014 Author Report Share Posted March 1, 2014 Well it looks like my mechanics have solved it, as far as I can tell. The battery was going into shutdown, which is why the dash lit up but the engine didn't turn. So, new battery and a couple of long journeys next week - let's see if I get stuck! Fingers crossed. To be honest the depressing thing, was looking for a newer car for the £8k or so I recon I'd get for the A8, and seeing what I'd get for the money. Not much fun. Let's hope it'll last me another year so I can save up for a new shape A8. Link to comment Share on other sites More sharing options...
cruiser647 Posted March 1, 2014 Report Share Posted March 1, 2014 I have just had to change my battery coding agian in VAG-Com to get the battery to read 100%. Only replaced it in Sept. It then read 100%, but then dropped to 25% and things were turning off (rear courtesy lights not coming on when car unlocked, radio turning off after 5 mins when engine not on etc etc). So had to change to change the code again. Oh, also turned off the bloody seatbelt chime! Link to comment Share on other sites More sharing options...
Iron Viking Posted February 21, 2015 Report Share Posted February 21, 2015 Hi there wordsman. Hows the A8 running? I am having the exact same problems with my D3 4.2. Did your new battery solve the starting issue? Long journeys or multiple stop starts when the car is at running temperature and my car will not start. Link to comment Share on other sites More sharing options...
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