Iqlima, my udm is e46 328i. I also tot is the brake pedal but i tried to shake it with leg but no use. It happened when I drove around 7pm and open the fog lights. Then the warning sign came out (with the two small lights at behind). And the brake lights always on whenever i start the engine.
Mouse, it's not handbrake light. Then handbrake warning lights is another one. I pretty sure it's not.
However, thanks for sharing ideas. Appreaciate that.