Door locks, window motors, roll bar failure?

[RonK]

My 91 300SL has 97000 miles. I just had to have the drivers door lock assembly replaced. I was told that my keyless entry wasn't working because of a bad vacuum pump. I was ready to order one for about $375 when my passenger side window quit working. Then the roll bar wouldn't lower and finally, the driver's window won't go down. Does anyone have an idea what might be causing the problem (s)? Fuses look fine. Thanks for any help.