[phchecker17]

What is a CEL and what is a "base control knob"? What base are you trying to control?

Surely you can just remove the 12v-socket, as it does not have any kind of "chip". Just terminate the ends correctly, so nothing bad happens.

 

[phchecker17]

Oh I thought about that in terms of errors in the car memory, but didn't get the abbreviation, as in German it is MKL - Motorkontrollleuchte. Same thing, other language.

As far as I know the 12v socket is just connected with 2 wires for 12V. Maybe I'm wrong though and they've changed it. But you will easily be able to see that if you just remove the front part of the center console. Sadly I didn't find any part numbers on my quick search.