BMW 5-series F10 when car is parked relay or something triggers shock sensor

I have weird issue with my BMW F10. 2011 530d xDrive to be exact. the problem is that when car is parked shock sensor is triggers from time to time. I have CCTV camera so I see that nobody is around, but in the car there is a dash camera and it records some noise. this happens like up to 3-4 times per 24 hours, sometimes only once. Any ideas of what that could be?

Video from the dash camera: https://www.youtube.com/watch?v=Ja96lrljMO0