Maybe someone has coded it in? But not fitted it
Code is gone, checked with carista and someone had enabled auto lights and auto wipers, disabled them and code went away 🙂Lin bus from memory is for wipers,exterior lights and electric mirrors. That fault you have would require some testing of the lin bus with a scope. I would say something is dragging it down. Could be a faulty component like rain sensor or a wiring issue. I think FRM is originating point for the lin.
ideally you need a circuit drawing to see exactly where the lin bus runs and if there are any crimped connections in the loom as these have been known to cause issues.
Think I know what they are, they are the gearbox sensor for auto start/stop, just whether it's the sensor or it need calibration...but as I don't need start/stop will leave that until after Xmas, will get a cable and ista thenWhy not start a new thread for the other 2.