Question about 1999 Audi A4

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1999 audi a4 1.8t doesn't start, i put in the battery the with crossed terminals, then i changed it and now it doesn't start, what can it be, did i fry the ecu?

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  • andmark36 Jul 13, 2009

    all the fuses are good, 40 and 60 amps, any other solution, could it be a relay?


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Sounds like to me you more than likely fried the ECU. If you replace this, it should fix your problem and get you back to running. The only other thing, and it comes after the ECU which is what makes me think it would be the ECU, is the ignitor chip. You would have to get this part from the dealer, but again, I think that you killed your ECU. Good luck and let me know if you have any further questions. Thanks for using FixYa!

Posted on Jul 14, 2009

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Check the undehood fuse box (most likely u will find one or more "MAXI" fuses blown, they will be 40-60 amps) and the passenger compartment fuse box, u will find fuses blown, replace them and it should start.

Posted on Jul 12, 2009

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