I have a 2001 S500. I have had a leak in the air suspension system for while - but now it quit completely. We checked all the fuses and put in a new relay. Before we spend several hundred dollars on a new compressor - is there a way to test it? I took a test light, and I don't seem to have any power to the compressor motor. I do have 12 volts to the solenoid on the compressor itself - am I looking in the wrong place?

Thanks,

Matthew