Yeah, replace the fuse. If it is original, it can look just fine and be bad.

Your symptoms fit this exactly. For some reason, the front driver's window is on the same fuse as the rear passenger side window. The opposite is also true. I guess there's some German logic behind why they did that, such as escaping from a car lying on its side...... You always have at least one working window per side with a blown fuse.

Anyway, either the fuse or the circuit has an open condition. Buy a whole bunch of new fuses. Use the newer brass type rather than the originals which tended to suffer from oxidized ends. Problems start going away as if by magic when you replace them all at once I have found on more than one occasion.

Good luck....

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-tp


1990 300SE "Corinne"- 145k daily driver - street modified differential - PARTING OUT OR SELLING SOON - PORTLAND OR. AREA - PM ME FOR DETAILS
1988 560SEL "Gunther"- 190K passes anything except a gas station
1997 S420 - 265k just bought it with a rebuilt trans. Lovely condition