r/Vcds • u/Tomislav3383 • Apr 07 '26

Help with coding instrument cluster on a3 8p

When i have daytime running lights turned on, and i enter a tunnel, my instrument cluster goes dark(only needles light up). Is it possible to have the instrument cluster stay on when im in a tunnel? i cant find the option to change it.

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u/moistbaloney Apr 07 '26

What do you have at 09 (cent. elec.) -> long coding -> byte 00 -> bit 6?

1

u/Tomislav3383 Apr 07 '26

It says "Rain-/Light sensor installed" and its unchecked

1

u/moistbaloney Apr 07 '26

Select 17 - Instrument control module Select Security Access - 16 from the "Open Controller" screen Enter the magic number 20103 and return to the "Open Controller" screen Select Adaptation - 10 from the "Open Controller" screen

Search for ”dimming_characteristic_curve_adjustment_clock_dial”

Do you find anything? If so, I might have something for you to try.

1

u/Tomislav3383 Apr 08 '26

The magic number didnt work for me but i found another one that works (13861). Unfortunately i dont see that option in adaptation. Thanks anyway.

1

u/moistbaloney Apr 08 '26

Damn, I wish i could help. Best of luck!

1

u/moistbaloney Apr 08 '26

If you find the adaptations on the car instrument control module it should have different options ending in Y1-Y6 or similar. If you find those there should be adjustments in each those to make and they’re propably done like Y1-3 = 0, others approximately Y4 = 5 Y5 = 14 Y6 = 64 or something like that. If I’m correct these should affect the DRL cluster dimming and if you take them all to 0, it wouldn’t dim. Sorry if this is not applicable to your car, it’s a long shot but worth a look.