I have a 1995 S420, 130,000 mis. Owned for past 6mos. A/C was not working, took it to a reputable A/C service center (not Mercedes) They found it low on #134 Freon, filled it up and checked for leaks. It worked fine for about 7-10 days, then quit again. Took it back, said it was low again (very little) and again could find no leaks. They said it could be the evaporator and that could only be done at the dealer as they had to remove windsheild, etc. to get at it? Anyone ave any input as to what it most likely could be? If I take it to the dealer (local Mercedes) how much money do I take out of the bank to find/fix the problem?

Thanks in advance!

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Mike T.
Snohomish, WA.