Seat Leon brake light issue

I had a similar issue with my Volvo a while back. Error message, no brake lights, the whole thing. Have you checked the brake light switch itself? Sometimes they can be a bit temperamental. Does the error appear immediately when you start the car, or only when you press the brake pedal?

Thanks for the quick reply! Where is the brake light switch located exactly? Is it something I can check myself, or would I need special tools or knowledge? Is it like checking a fuse, or is switch replacement more complicated?

On my Volvo, the brake light switch was located right above the brake pedal, in the footwell. It's usually a small plastic thing. It's not too complicated, but if you're not comfortable working in tight spaces, it might be worth taking it to a workshop. It's possible you dislodged it somehow. A simple switch replacement shouldn't be too expensive, but it's worth visually inspecting it first. Otherwise a new switch may be needed but you'd need to get it to a workshop to check.

It turns out I caused the problem. I had been fiddling around in the footwell and knocked the brake light switch loose. I pushed it back in until it clicked, and everything is working now. The error message is gone, and all the tail lights are working. Thanks for the help!