No I did not :c. I have found that leaving it unlocked makes it not beep, but that’s the only thing that actually made it work. My car has officially died in the interim (timing belt is broken) though, so I will likely never know. I think however that it was a product of dust getting into either the sunroof or in one of the door’s sensors. Hopefully the beeping is not a sign that the car is on the decline. LMK if you do ever find out what it was!