I can see that since I have the car the following error is always present:

A872 JBE: Passenger-compartment sensor
DIAGCODE: D6575_DWA00000_90_901

It seems it is related to the passenger side movement sensor, since Rheingold asks for a check related with triggering the alarm by opening the passenger window side and moving an object inside to activate the alarm (it work prefectly).

I'm deleting the error code everytime when I connect to the car for other reasons.
I'm thinking in replacing the "sensor".

What sensor it is?