I've got an 09 328i Wagon/E91. The only way I could get into reset mode was to hold both the trip reset button and the B/C button at the same time. Brake pedal did not work for me.
- Also, referencing brake sensors. I just changed out my front pads and rotors. I could not reset the brake service interval and I also got the red car-on-lift service warning and both front and rear brake service interval mileage read '_ _ _ _'
- i looked closer and did have wear on the brake sensor. These newer sensors are not good/bad like the E46's. I've read that they increase resistance as they wear until a full open. Trying to reset the service interval with an old sensor will only work if there is no rubbing on the sensor.
- NOW, the trick. Just take a metal garbage bag tie and jump the two sensor plug wires. This now shows zero resistance and the computer will allow a service reset! Plug the old sensor back in (as long as it's not a full open) and no more brake warnings
