I've complained twice to my dealer that the A/C doesn't seem to blow cold. On hot days, when set at 70F, the cabin temp seems to be closer to 85F. The dealer set the system at Max A/C and it did blow cold - so they pronounced it OK. Today was cool yet the A/C came on - the opposite problem.

Here's my new theory: The A/C control unit either gets an incorrect temp signal from the sensor, or it gets a correct signal but can't process it.

Before I discuss this problem again with my dealer, I going to check the cabin temp sensor to see if it's somehow blocked or even disconnected. But here's my question: where is the cabin temp sensor located? ('15 Cooper S HT). Thanks.