Hi all, in trying to diagnose my 2009 is220d a/c not working I have checked high and low pipes and there is no refrigerant loss. It appears that the a/c compressor clutch does not engage when aircon turned on. Before trying to check the current/voltage going to the compressor I wanted to check the relays in the engine compartment fuse boxes but am having trouble identifying where they are. Any help would be much appreciated as I am trying to do it myself as taking to Lexus may prove extremely costly. I don't just want to go down the road of a regas as I don't believe this is the problem.
