2007 Mini Cooper S R56. Began getting yellow and red temp lights. The AC would then not blow cold until the lights went off. I replaced the coolant sensor. Had all codes cleared. Now AC not cold and ac snowflake light flashes. Along with intermittent slight loss of horsepower while driving and MPG went from well over 35 to now 27 MPG. Tested all fuses and all good. Compressor not engaging, clutch is turning.

 

did you ever resolve this?

 

A/C pressure switch. Part #64539181464