Hi all I'm new to the forum and I have a 2006 GTC. I recently changed the main battery with the exact same one that came out, and the engine fan came on and doesn't stop, It stops for a while if you get in the car or press the button to open the boot. I cleared all the fault codes that came up (127!) and i'm wondering if it just needs a good run to reset the ECU? Thank you in advance!