This is an easy repair.

It's probably your window switches. They get dirt and stuff in them over time. Buy a few new ones, they're pretty cheap, $10 or so from memory.

Take out your center junk-holder compartment between the seats. There are 2 screws at the bottom front of it, that are angled forward to screw into the wood shifter console panel.

Once those are out, lift out your junk holder, then take out a few screws on the rear of the wooden console panel, and lift it out.

Your switches lift straight up. Pull the bad ones out, replace with new ones.

Reassemble, you're done.