I have 2012 Panamera that I managed to hit a football size rock on the highway. It ripped of my serpentine belt and the AC compressor pulley. I have replaced the AC compressor and belt...charged the AC with coolant. The problem now is that I must directly power on the compressor to a 12v source to engage the clutch.

I am thinking it may be the relay switch but cannot, for the life of me, find it. I've searched all over the car as well as the internet yet still I can not find. Can anyone point it out to me.

Cheers

 

See if this helps ....

 

I appreciate this help so much . I'm at work but will play around with that this evening.

Thanks again!!

 

This is the pressure sensor I belive...not the Relay.

 

You are correct. --- not what you were looking for.

This is a wiring diagram of the A/C system. It might help in diagnosis.

I'll look for a relay location diagram.

 

I'm about to go crazy...behind passenger seat...in yrunk...in engine compartment infront of driver!!!

I've heard it all.

Does no one know?

 

Still can not find AC relay switch...any help would be appreciated.

 

Have you inspected that pressure switch to make sure it's not faulty or damaged? It may be the thing that engages the clutch, just thinking out loud. Not definite

https://www.sunsetporscheparts.com/o...or-95561313703

 

I did last night...I think you may be correct. Multimeter showed no life

 

Great, I hope it's just that.

From the looks of the wiring diagram and that fact that no one knows where it is, there might not even be a relay switch for it. I did find a relay, but I think it might just be for the internal fan/blower

 

I do belive you are correct on both counts. The meter had no continuity and that would mean that the circuit would not be complete...thus, no power to the compressor. Thank you for your input. I have a new sensor on order and that should do the trick!!

It's only 112 degrees here in Texas...whats another week or so without AC!!