How do you reset brake fluid light on a 2004 530i BMW?

get on driver seat & look for two things.

1st: Check button (located on indicator stick)

2nd: reset button (small black stick button located on left side of the speedometer)

Move the key to the ON position where all the lights turns ON but the car doesn't start. Push & hold the reset button until you see the service icon appears. Now press the check button couple of times until you see the brake fluid icon. Once the brake fluid icon appears press & hold the reset button again until the RESET icon appears. As soon RESET icon appears press & hold the reset button again until you see the new milage.