anyone have a FSM diagram of where this sensor is located, how to change it, and where to buy it?

this sensor is at the back of the compressor usually.

The sensors would be similar across the range of cars - I bought a compressor clutch assy for my w124 too, it was sold on ebay as S500 compressor clutch unused.. I paid 40 bucks for it and its a perfect fit - same part no too.

You can try the jyard for it. It usually is good for a long time. Most people have had klima relay or other problems.

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2012 BMW X5 (Beef + Granite suspension model)

1995 E300D - The original humming machine (consumed by Flood 2017)
2000 E320 - The evolution (consumed by flood 2017)

thanks

do you know anything about the cooling system

I'm losing water. I think it's exiting the overflow tube

mechanic said I had too much pressure in the system, would a water pump do that?