It was working about 2 months ago perfectly fine. I think I found the leak in the system to be the high side port....I have pressure in the system, but the compressor wont start.

I've switch Klimate Relay /w working one from my 300TE, so that rules it off.

I just checked and I have voltage at the pressure switch Ignition on, engine off. One terminal has 11.56v, the other terminal has 0.65v. Sound ok? When I bridge the terminals though nothing happens...

What else could be the problem?

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2016 Monsoon Gray Audi Allroad - 21k
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2003 Gray Mercedes ML350 - 122k