I am trying to get the lumbar support to work on my seats from a 2018 Audi S4. I installed them on a 2007 A3. I got a bcm from a 2018 S4 and the pin 25 linbus displays a constant set of wake-up codes, is my guess. Going through one of the seat controllers it seems that Audi uses a sti L99PM72PXP …

Audi LinBus B9 S4 Seats

Railroader July 2, 2025, 9:38pm 2

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