Thanks! Knowing that what I might be searching for would be somewhere under the dashboard is a good first step.
Then I am not an engineer nor have any experience in electronics BUT I know from my dad that taking the dashboard apart is not an easy task. If I would succeed I do not know what I would be looking for… Would tan antenna look like a piece of wire? Or could it be embedded in the ‘copper’ circuitry of a PCB? Do cars use regular SIM cards like the ones found in phones or would they look different?
The maintenance manual would probably be a good place to start before trying to put anything apart.
Valid point, no offense taken. I did not think about the airbags! As for damages to the vehicle, this is something I understand an am willing to accept. If I do stupid things I have to face consequences.
Anyway, getting the help of a mechanic would be point number 1 on my list. If can find one willing to take the challenge :)