Loud thud after M3 locks

[Havenmess]

Hello - My M3P makes a very loud thud from what seem the rear of the car, shortly after it locks. I have had a previous model 3 long range and it never made this sound. I have uploaded a clip of it. I also found a YouTube video of a gentleman that had the same issue, but it doesn't appear he got closure. Any ideas? I have an open ticket to Tesla on this.

Clip of thud (5 seconds):

Longer video of gentleman with same problem (3 min) :

 

[Avid]

Contactor opening, not an issue, the car will at times make noise like that and more. I suggest the next time you get a update, sit in the car the entire time it is updating. Lots of things going on, lights flashing, contactor opening, etc., normal.

 

[RayK]

I believe that it's your car exhibiting obvious displeasure at the Powered by BMW Motorsport sign up on the wall.

+1 on the explanation of the high voltage contacts switching.

 

[Candleflame]

it defo sounds like the contactor opening/closing.
Does your car fall asleep?