The coolant fan on my mk2 Fabia 1.4tdi is running constantly, even when the engine has stopped and the keys are out of the ignition. I noticed the other day having been on a short journey that the fan ran on after I had stopped and locked the car.  The fan completely flattened the battery as a result.  I suspect that the fan control relay is to blame. Has anyone ever replaced this? Is it an easy repair? Where is it located? Thanks.

I think there was this issue on another post from a chap called Mr Crow. Try looking up his old posts as he may have rectified the issue by now. It happened after either heavy rain or a jet wash I think. It was speculated that the components may have been saturated and/or damaged but I can't be totally sure without a re-read.

Thank you, I'll look for that one.