Cooling fan issue

[Kln]

I have a 2007 audi A4 2.0T. I recently had the somewhat common issue of intermittent crank/ no start which I diagnosed as a fulty PCM/ECU relay. I replaced and have not had the issue since.

Now I am having an issue with both cooling fans running when the car is off and key out.

If I open the drivers door the cooling fans wil stop but shortly after closing it the fans will begin to run on high again.

If the fans are running and I get in the car and close the door the fans will stop when I open the door. Start shortly after I close it. If I insert the key and turn it to the ACC position or start the car the fans will stop. When I remove the key the fans will run again.

If I unplug the main harness or remove the fuse the fans will not run.

I have searched the forum and found similar issues but I haven't seen any that exhibit the same symptoms I am seeing.

Any help would be appreciated. Thank you!

http://i1202.photobucket.com/albums/bb379/klnhrpr/55A7CC7F-7943-414B-A55C-C5E921128D72.jpg

[vtwinjunkie]

how long do they run for? does this happen all the time?

[Kln]

They will run until the battery dies. It is happening consistently. I have been forced to unplug them after I'm done driving to keep then from killing the battery

[1killera4]

Fan Control Module. Got too hot and melted internally.

[Kln]

Thanks for the reply. Are then any diagnostics I can run to verify ?

[Axis]

I have a 2007 audi A4 2.0T. I recently had the somewhat common issue of intermittent crank/ no start which I diagnosed as a fulty PCM/ECU relay. I replaced and have not had the issue since.

If it was the relay you replaced was for your fuel pump located under the ECU in the ECU box because of water infiltration note that the fan relay is located beside it. (Iirc)

[Kln]

I suspected the same. Accompanying my crank/no start issue was the symptom of no check engine light appearing on the dash. Indicating there was no communication to the ecu. I could generally lightly tap the ecu box cover the. Proceed to turn the key, check engine light would illuminate and car would start.
When I opened the ecu box to replace the ecu relay I saw no signs of water ( which is not conclusive). On a whim I removed the second relay in the box while the fans were running to see if there was the possibility that was the culprit but the fans continued to run with that relay removed.