This is my second post with you and I already have a few questions: The horn no longer works. The previous owner was at a wedding and horned as often as it goes, suddenly she didn’t go any more. I would first look at the fuses for the horn. This sits driver’s side under the light switch, right? The radio key no longer works, on the return journey everything went still. The next then only sporadically. Now I open it with the key beard. And just now he showed me in the display “Searching for a driver’s fault workshop” and beeped. After a few seconds the error had disappeared. I had the comfort battery on the left side in suspicion, opened the cover and it stood 18/06 on the pole – so June 2018? This should probably be changed more quickly? The voltmeter shows something over 13 volts. Must it be more and is already an indication for a weakening battery? Furthermore, the steering wheel heater is not working, but the button is there, but when I press it on the seat heater o does not work?