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Car won't start after radiator fan staying on

mel09 Jun 13, 2019

  1. mel09

    mel09 New Member

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    Please help! We have an Audi A4 2.0 TDI 2006. I popped out in it earlier and when I stopped the radiator fan came on. Got back in to go home and same again but stayed on for ages. It drained the battery so car wouldn't start. Took out the fuse for the fan which stopped that. Got the car jump started and left it running outside the house. Went back out and it had cut out. Now it will turn over but won't start and help would be most appreciated!
     
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  3. RAF_S7

    RAF_S7 Well-Known Member Team V8 Gold Supporter Team Sepang Audi S7 A7 Owner Group Black Edition

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    Is the battery original?

    Do you have a meter to measure the battery voltage across the terminals?
     
    Sidrick likes this.
  4. mel09

    mel09 New Member

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    Fairly sure it's not the battery as it is turning over, just not firing?
     
  5. Sidrick

    Sidrick Active Member TFSI Owners Group Audi A4

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    Diagnosis by internet mechanic can be a laborious process. I assume that since you're asking here, you're not sure what the issue is, so I wouldn't be so quick to dismiss questions from those trying to help. The indications are that it's electrical, so the battery is the best place to start.

    Do you have a meter to measure the battery voltage across the terminals?

    Do you have access proper a proper diagnostic device?
     
  6. mel09

    mel09 New Member

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    So the car is fixed! Turns out the box that holds the ECU and relays was full of water... Got it dried out but the relays were knackered so replaced them and it fired straight away. Thanks to another post on another forum it was a fairly easy fix. Thank God it wasn't a huge garage bill!
     
    RAF_S7 likes this.

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