Mino,

This car has a circuit that cuts out the AC if it senses a slipping built. I would expect that there is a problem with the belt tensioner. Check it out, repair or adjust and replace the belt. This is most likely your problem.

Good luck,

------------------
Larry Bible
'84 Euro 240D, 523K miles
'88 300E 5 Speed
'81 300D Daughter's Car
Over 800,000 miles in
Mercedes automobiles