I've upgraded my 2009 Scirocco with the 187b head unit, but the reverse camera doesn't switch the screen when reversing, although the radar works fine. Interestingly, the reverse camera works normally when the car is off, but not when the engine is running. I've already replaced the head unit and the reverse camera, but the issue persists. Any experts out there who can help?

What could be the reason for the Scirocco 2.0 engine warning light to turn off and then come back on again?

Does the Scirocco consume oil?

Has anyone experienced the driver's door window on the Scirocco only lowering a little bit when opening the door? What could be causing this issue?