Has to be a fuse or a broken wire.

when I brought my car to florida the humidity played heck with the fuses. I took all of them out and wire brushed the terminals in the box and replaced them with new ones from MB. used a lot of dielectric grease too. this fixed a lot of intermittant and bothersome issues with one pass, including the passenger front driver rear window issues I was having

also, if you recently replaced or removed your window switches, it is wery easy to get them connected wrong. The plugs will go on in many different combinations resulting in some windows not working or blown fuses....

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1982 300CD Turbo (Otis, "ups & downs") parts for sale
2003 TJ with Hemi (to go anywhere, quickly) sold
2001 Excursion Powerstroke (to go dependably)
1970 Mustang 428SCJ (to go fast)
1962 Corvette LS1 (to go in style)
2001 Schwinn Grape Krate 10spd (if all else fails)