Retrofit Passat 3BG Electric Folding Mirrors

Hello everyone,

Hope you're all doing well!
I didn't find anything using the search function, so I thought I would start a thread about an old car.

Okay, I have a Passat sedan (model 3BG) from 2003. It originally didn't have power windows in the rear, but I want to add them.

"We've completely rebuilt everything, extended the wiring harness (removed all the original components from a scrapped car and installed them here), replaced the front left and right door control modules, and I also have a central locking system with part number xxx799B."

The problem now is that when I install the TSGs (window regulators), the other existing TSG from vo.li. isn't recognized as the one currently installed, and similarly, the KSG (control unit) isn't recognized when I replace it. And even if I code the KSGs for a "4-door car with 4 electric windows," I still end up with a cascade of errors in the fault memory.

Error:
CAN bus corporation.
and all those TSGs (technical support groups) with no communication.


I measured and checked the cables, and there are no breaks or bad connections, so everything seems to be fine.

Can someone possibly help me here?

Best regards from Carinthia!

Autoscan?

I don't have it on hand right now, but I actually just put everything back together.

What I was able to find out is;
I have the "1C0 959 799 A" KSG (allegedly capable of handling 4 eFH), the "1C1 959 801/802" front headlights, and apparently need the "1C0 959 811/812" headlights for the rear.

The rear door control modules I received are from a 3B Passat.
It seems there's a mismatch with the bus system, which is causing the KSG (likely referring to a specific system or component) to fail.

Thank you for the feedback, I'm excited .