There are TWO fuses that you need to remove. We just sold our 190E so I'm going from memory.
In our car, one fuse controlled the L front window and the R rear window. Another fuse controlled the R front window and the L rear window.
I'm sorry but I don't know which ones they were. Pop the lid off of the fuse box and there should be a key that tells you which fuse is for what function. You should also be able to find the same info in your owners manual.

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Jay Yambrovich
Scotts Valley, CA.

1993 300 CE Cabriolet (A124) 131K miles
1997 C-280 133K miles

2000 BMW R1100RT 69K miles
1989 300 E 216K miles (sold)