My air conditioner on my 99 ML320 stopped working and I took it to a local Mercedes mechanic who is pretty good but not that experienced on the M class. He found and fixed the leak (a loose nut) but cannot figure out how to recharge it. The problem is that he can't find the sequence to start the compressor to build up the pressure of coolant.
Does anyone have instructions on recharging the system?
Its a two hour drive to the nearest dealer and I'd rather not go.


Terry