1994 Jaguar XJS convertible top back windows

You might try using a rubber mallet n inside of interior panel smack it and that sometimes breaks the motor loose so it will go up. Or if it's a door slam it hard and that may do the same thing. As long as you know it's getting power because the wires can break in door or switches can go bad.

Ok there are 4 relays for the windows and one fuse. The fuse is on the component panel in trunk as well as relays. There are two for up and two for down, one each window. You can see if they are getting and putting power out to the window. You may be able to jump them to see if it's a motor or power i'm pretty sure that you need to jump the grn/brn wire and the grn wht wire to get motor to go up. But this could also be a module problem so have that checked as well see pics.

They don't give us what type of fluid to use but hydraulic fluid would be ok it shold be at auto parts. If in a pinch uses trans mission fluid atf. Also you need to pull the plugs out of the relays to jump the wires. If the pump /reservoir is low on fluid it will have to be bled to get the air out so a pro will have to do it.