2008 Jaguar XJ8 (Automatic Windows Open)
 

I was at a restaurant for a birthday, and after parking the car myself right in front of the restaurant, keeping the keys on me, and having my doors locked and windows closed, i come out about 2-3 hours later to see my windows down, SUNROOF OPEN!! lights on, but nothing in my car was touched, i assumed it was a break it but after a while i can see that nobody could have broken into such a secure car without setting off the alarm, i have been thinking for hours to myself now on how this could have happened, is it some sort of malfunction of the car or maybe there's some key combination on the key that i might have accidentally pressed? I am afraid to park my car on the street as of me not being assured that my car won't do the same thing again, someone please let me know what kind of an issue this is, thank you!

Hi you must have pressed the unlock button down for more than a few seconds this will open all windows if you hold down the lock button it will lock the car and close all the windows it was a option on these cars nothing wrong

OP, either search here or your manual "Global Open/Gobal Close".

Explains post #2 a little better for you.

Sorry should have said on your key fob ( old age )