BMAX Power Windows Failure

Sounds familiar. I had a similar issue with my old Opel Astra. The power windows just packed it in. The 'window regulator' is basically the mechanism that moves the window up and down. Did the error message say anything specific? Sometimes it's just a faulty switch.

The error was pretty vague, just something about the window regulator malfunctioning. What exactly does the switch do, and could that really stop all the windows from working?

The switch controls the power going to the window motor, which is part of the regulator assembly. If the switch is defective, it can cut off the power supply. Yes, it could stop all the windows working if they are linked through a central control. Given the symptoms and error, and that you are not too familiar, it is probably best to take it to a workshop.

Thanks for the help! Took it to a local garage, and you were spot on – it was the power window switch! Cost me 200€ all in to get it sorted.