I replaced my 2010 Mini Cooper base engine (40k miles) with another 41k mile one two months ago. Did myself. Last Friday my son said the thermometer sign came on. It started in yellow and became red.

I looked at it this morning and found the electrostatic fan was not connected. Turned out I connected the connector to another one near the engine control module (ECM). So I switched. And the fan naturally started working.

Now I have a connector near the ECM hanging. Please help.