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I'm absolutely certain no one else on this planet could have solved your problem this way.

Yes, that is true. Thank you Mr. Ciclo.

I changed adaptation channel 54 from 1 to 0, but the problem persisted.
So, I changed channel 54 back from 0 to 1.
Then I changed adaptation channel 69 from 1 to 0, and the problem was solved.

Is it enough to just have adaptation channel 69 set to 0, or should I also change channel 54 to 0?
What ...

Exactly, and that's why the T73b/34 needs to be connected.

Install the wire you discovered yourself. T73b/4 --- T6/3 (1.0mm2).

Take a reading of the BCM's adaptation channels and upload it to a server so we can access it.
https://drive.google.com/drive/folders/0B2nv91Y7YYCba3hCc3V1bHBIblU ...

Exactly, and that's why the T73b/34 needs to be connected.

Install the wire you discovered yourself. T73b/4 --- T6/3 (1.0mm2).

Take a reading of the BCM's adaptation channels and upload it to a server so we can access it.
https://drive.google.com/drive/folders/0B2nv91Y7YYCba3hCc3V1bHBIblU ...

Hi there.
Looks like signal 58/58d conflict is going on after BCM swap. Temporarily isolate T73/b 34 wire from BCM and see if problem resolves.


When I disconnect wire T73b/34, the flickering of the instrument cluster backlight and all buttons stops. However, the dimmer wheel now only adjusts ...

NO.
I only said that if you look there, you might be able to find the solution yourself.

It's very obvious to me. 🤷‍♂️

---

However, it's a good time to install automatic lights. Highly recommended.


OK, I think I have the solution: A new wire between Dimmer (pin T6/3) and BCM 7E0 (pin T73b/4 ...

ciclo wrote: Tue Mar 31, 2026 11:07 am Search here...
viewtopic.php?p=516196#p516196
... and perhaps you'll find the solution yourself!

Ciclo, i am sorry, this topic is about Automatic lights, but I dont have automatic light switch. So you're saying I need to get a wiring harness for automatic lighting?

Update:
This only happens when the engine is running and the lights are on. When only the ignition is on (engine off) and lights are on, there is no flickering at all.


Temporarily isolate T73/b 34 wire from BCM and see if problem resolves.
Thanks for the advice. I'll pull this pin out of the ...

Hi everyone, I’m looking for some advice regarding an issue after a BCM upgrade on my 2013 VW Polo 6R (TSI).

VW Polo 6R (TSI) 2013 with:
Factory Bi-Xenons - without auto-lights
Auto-dimming mirror
Rain sensor
Cruise Control
Panoramic Sunroof
DSG Transmission

The Upgrade:
I upgraded ...