Looking for location of A/C Evaporator Housing Temp Switch
 

My 2008 Cayman S A/C compressor won't turn on, however, the 2 front fans turn on after 20 seconds and run continuously. My scanner indicates that the A/C evap sensor is reading -40 degrees. This reading prevents the A/C from turning on.

Part # is: 1H0-907-543-A. Diagrams show that it "should be" on the driver's side interior, above the floor vent! I have searched for the sensor location to no avail!

Any idea where this sensor is hiding??

https://www.renntech.org/uploads/mon...1314625257.png https://www.renntech.org/uploads/mon...5432_thumb.png

That's exactly where it SHOULD be, unfortunately, it is not there. I actually removed the driver side duct to see if it was just hidden from view (and touch) and that area is a solid piece of plastic.
I also removed the battery and tray from the frunk hoping that it was on the other side of the firewall, again to no avail!

Don't know what to tell you then, that is where that part number normally is located.