Found this inside the NS B pillar, any idea what it is?  Look like some kind of speaker, maybe the one that 'chirps' when you alarm the car?

 

Yes it's the thing that annoys the guy stealing your car  Nice to see you got into your B pillar

That's the parking aid beeper 

4 minutes ago, digifish said:

Yes it's the thing that annoys the guy stealing your car  Nice to see you got into your B pillar

 

Thanks for all the tips digifish, super helpful.  Satisfying job to do and thankfully everything went back as it came off!

6 minutes ago, nige8021 said:

That's the parking aid beeper 

 

I thought so too, but my beeps come from the dash.

6 minutes ago, Steviedakota said:

Satisfying job to do and thankfully everything went back as it came off!

 

Yes nice to do something while sitting upright in a comfortable position for a change

According to Elsawin, that one is for the rear parking aid, the front parking aid beeper is under the dash 

2 minutes ago, nige8021 said:

According to Elsawin, that one is for the rear parking aid, the front parking aid beeper is under the dash 

 

Ah OK I stand corrected. Bonus then, its less annoying after this mod - https://www.briskoda.net/forums/topic/449490-noise-insulation/?do=findComment&comment=5242615

perhaps its a microphone put in by a foreign spying agency, sorry seen too many spy films recently.