Hi, I have an 04 Audi A4 Quattro 1.8T. My ESP light has been appearing while driving and stays on. The car has also had the brake lights come on at random throughout the night only for me to find them still on when I leave for work in the morning. I have also noticed while driving the car will just lose power similar to an american car with shutoff after a certain speed. When I downshift I regain power. I was thinking it was the brake switch then I thought maybe the ABS control module, but I am now lost with the engine losing power at random. Anyone have any ideas?