High-Pressure Test
WARNING: This page does not describe the selected car, but rather 8 other vehicles, including the 2003 BMW M5, 2003 BMW 540i, 2003 BMW 530i, 2003 BMW 525i, and 2002 BMW M5. However, it is still accessible from the selected car via links, so may be relevant.
NOTE:
Perform test on both brake circuits, front and rear.
- Unscrew vent plug, connect pressure tester and vent. See Figure.
- Load brake pedal with a force of approximately 112 lbs. (500 N), and block pedal with pedal support.
- After 2 minutes, pressure must not drop by more than 8 percent.
- Perform low-pressure test. See LOW-PRESSURE TEST .