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Thread: Coolant sensor

  1. #1
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    Coolant sensor

    The engine management light has come up on the dashboard of my S3 and according to the vag.com it is the coolant sensor.

    However, the temp. is dead on 90 and it hasn't lost any water/coolant so is it just a faulty sensor?

    Where is it and how easy is it to replace. Can I do it myself as a reasonably competant mechanic or is it a specialist job?

    Thanks in advance.....

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  3. #2
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    Really easy DIY job. Not sure exactly where it is on the S3 but I did mine on my 2.8Q and took 20 minutes. Just look at the water pipes in the engine bay and you'll see an electrical connector with about 4 wires coming off it somewhere on the pipe. the coolant sensor is underneath. Just unplug the connector, prsie out the circlip and the sensor will come away with a bit of wiggling. Remember to take the top off the expansion tank to release the pressure first otherwise you'll get sprayed with coolant (like I was).

 

 

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