Why are my car's windows opening by themselves?

I have just been out to my SEAT Ateca 1.4 TSI and found all of the electric windows open. I have not used the car for three days and know they were closed when I parked the car.
Any thoughts on what could have caused this?

Asked on 3 January 2020 by Neil Stevens

Answered by Honest John
Can be caused by sitting on the button on the remote and activating the 'global windows opening' function. But more likely to be caused by moisture ingress to the locking and windows ECU inside the driver's door.
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