BenzWorld Junior Member
Date registered: Sep 2015
Mentioned: 0 Post(s)
Quoted: 1 Post(s)
2004 ML500 AC or Compressor issue
Thanks in advance!
I got a 2004 ML500, absolutely love it. I am having an issue with the AC. It seems like multiple things could be going wrong. Not sure.
I took it to a Mercedes mechanic, he evacuated and recharged the system. Issue remained. He also attached a diagnose tool, couldn't see any code.
My vehicle I believe does not have a clutch on the compressor. Also it does not have a fuse for the A/C or the compressor. It has a fuse for the whole instrument controller on the passenger side kick fuse box. I checked it and it is good.
I did not hear a clicking sound on relay 26 when I turned the AC on. I checked the relay, it is good. So I read the voltage across terminals 30-87, when relay unplugged. I do not have a 12V sitting there like I do for the other relays. That seems like a problem to me. What could be the case?
Any other suggestions?