There are no sensors in seats that’s why the car assumes there is someone in the car after they have alighted with their seat belt off hence the chime unless you switch car off and restart it assumes you are on a continuous journey. I had it in dealer twice they submitted a technical request and the reply from Porsche is it “working as designed”Wow @Dek, you must be having the issue more than me. Only had the issue a few times since getting the car in March, but it is every time I've dropped a rear seat passenger off. I rarely have more than 1 passenger in the car and if I do we're getting out together anyway. For me it's annoying, but not enough to get rid of the car, not even annoying enough for me to get to the dealer about it yet.
I'd think that there has to be sensors in the seats otherwise it wouldn't know when you'd had passengers. So they must be there, and if there, fixable. I'll try calling service dept today, we're in lockdown again so SA most prob not working.