The MINI uses a Brake Wear Sensor on the front left and rear right brake pads. When the brake pad wears down, the brake pad wear sensor is also worn down and will eventually trigger the warning light to alert you. Once the warning light is triggered, the wear sensor needs to be replaced.
2002-2006 R50 MINI Cooper and R53 Cooper S Hatchbacks
2005-2008 R52 MINI Cooper and Cooper S Convertibles
After replacing the sensor, turn the ignition key to the #2 position for around 30 seconds without turning over the engine...the light goes out!
This wear sensor is the factory original sensor.
See NMB1014 for the front sensor.
For 2007+ R56 Hatchbacks and 2008+ R55 CLUBMANS, see G2NMB2020.
MINI recommends brake fluid replacement every 2 years, more often if you track your MINI.
For replacement Brake Fluid, see Mini Cooper Brake Fluid Pentosin DOT4.
For High Performance Brake Fluids, see the following: