Question about 2000 Audi A4

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Audi 2000 A4 wont start warm/hot (not weather related)

I've looked for similar issues on the forum and haven't quite found an answer just yet.

I have a 2000 Audi A4 that wont start after it has been running for a while. If the car is hot, and I turn it off for 20 or so minutes, it wont start again until about an hour or two later.

I've taken it to the dealership and they have replaced the thermostat and battery, a local shop and got the starter replaced but I still seem to have an issue. The local shop is saying it may be the thermostat sensor, but frankly I dont know if they are just guessing at this point to milk me out of money. Any ideas?

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  • ccrozier_agr
    ccrozier_agr May 11, 2010

    Hi can you give us details on the engine like size & fuel type

  • Barrle Cahill Jul 10, 2013

    As you look into the engine from the front..on the left hand side back you will see a black cover where the module is situated its silver to the right of that the is a relay with the number 30 printed on it....The relay is the problem happend to my mates car today



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Yep, He's right.If thats not it, it's the main relay. good luck.

Posted on Mar 13, 2010

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You have been milked already ! change the coolant temp sender unit its a very common fault

Posted on Dec 11, 2008


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