My AC suddenly quit on my 1999 C280 and it's necessary here in GA...91 degF again today!
My trusted MB shop ran numerous tests and says the signal is being transmitted to the compressor but it's not coming on. I can turn the compressor by hand and I don't hear any grinding or noise, however, the clutch apparently won't engage.
Mechanic wants $1200 to replace the compressor and dryer.
Based on reading posts in this forum, I did try gently banging on the crompressor clutch plate to see if it would free up but no luck.
Any suggestions?