What do you mean by "tried another used part"? What part?

 

I've highlighted it.

 

The problem reads like a clockspring or wiring harness issue.
For brightness, have you tried adjusting the brightness using the control? Does it make any difference? Do both switch packs vary intensity?
(RHD shown and LHD is a mirror image)

 

Yes, tried this as well. Left one stays lit on the highest level, right one is adjustable.

 

Turned to be the wiring problem. The one just above the wheel. The electricial has managed to switch missing connections. Other option would be to change the part.

 

Hello. Sorry to call this thread to 2025. I have the same problem occurring In the same left control. Can you specify ease a little bit more what the electrician have done? Do you have any more images?

Kind regards
João

 

Hi. The flat wires cable was damaged. The electrician mixed some wires and said there were a couple of spare ones. But charged about 200$. From what I see you'd better just replace the part, with a used one, it costs about 50-60$ only. That round plastic part I posted photo of, just behind the steering whell. Inside it are the flat cables that went broke.

 

Hey I have a similar issue. Can you be a bit more specific with your fix please. Thank you

 

To sumarize. If your buttons on the right side are off it's more likely just a #33 fuse under rear seat (unplug/ignition/plug) . If like I had left side bahaves strange you need to replace first round plastic part behind the wheel (there are flat cables inside it that are broken)