Hello forum, the topic has been dealt with before, but this doesn’t quite hit my problem. Starting position: Vehicle had to be TÜV and I gave it to the workshop to make some repairs. Among other things, apparently a brake light bulb was defective. Everything was good. Now after a few KM the EPG light lights up in connection with the yellow system light. Didn’t come on at the first moment and then had read out the error. P0571 unplausible signal from the brake pedal switch. I extended the switch (4 pole) and checked for passage when pressing. Although I could not detect any malfunction, I now installed a new one and deleted the error code. This now reports error-free, but now the brake lights are constantly shining, even when the ignition lock is switched off. The switch is installed according to regulations, pin out completely and pedal actuated. Only after pulling the fuse 15 the lights are extinguished. My scarf is checked, none of the three went. tplan is now a bit confusing, it is older and refers to the predecessor model. The fuse 15 is now supposed to get the switching voltage from the ECU. Does the ignition lock possibly still hang in between? Can it be that the ECU is defective? Can it be somehow reset? I am at the end of my Latin right now, but I have to make the box run, my wife belongs. Therefore, would be more than grateful for qualified help.