Hi Weißi!
Neureichenau? ...isn't that near me, in the real Bavaria, just around the corner?
First of all: We all use the informal "you" here, because it makes things easier.
I can't do anything with your error descriptions...
As always and everywhere: PLEASE ALWAYS FIRST perform a complete car scan, then it will also be easier to help you

.
Best regards from Munich!
1. S.verlängerung: Audi A4 Avant quattro, 1,9 TDi MKB: AFN, BJ98, Vollausstattung, +VP1L
2. Moped BMW K1200RS, 130 PS, BJ98, Vollausst.
3. T5 1,9 TDI PD (AXC), BJ04 - nur Ärger!