Jaguar Repair Problems? Ask a Jaguar Repairs Expert.
If you open the door and the window drops then goes back up when you release the handle with the door stillness pen then this is usually a failed micro switch in the latch assembly. If the window keeps dropping then we should try and reset it. With the engine running and all doors closed lower both Windows then hold the switches down for about three seconds. Then raise both front windows and hold the switches up for about three seconds. Let me know.
If the windows lost memory then yes low voltage can be the cause.