Chris,
I think your plan is a solid one. I agree -- doesn't seem worth it to evacuate the system for what seems to be a malfunctioning pressure switch, esp. since the fans, if anything, are running more than they 'need' to. That's a much better 'problem' to have than not running at all. You are conscientous enough to know that your aux fans weren't working before you changed the temp switch. On the other hand, there are a LOT of MB owners with non-working aux fans who don't know it, and may be shortening the life of their AC compressor.

Many folks don't know that low-speed aux fan operation is really intended to preserve the compressor, not to keep the cabin cool (although that's certainly a nice side benefit).

__________________
Steve
'93 400E