hmm.... I just opened up the dash cover on my e320. didn't see any brake switch behind the brake pad. does anyone know where exactly it is?

Also, I've found that if i press down on the brake and then start up the car, the BAS light will go away. But as soon as i let go the brake, the BAS light pops right back.

I've managed to connect a diagnostic tool to read out the codes. But the tool just said: "All pass, no code readout".

Any ideas?