Brake Warning Light
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.
Brake warning light is mounted on instrument panel. Turn ignition on and release parking brake. Verify light is off. Remove master cylinder filler cap. Warning light should come on. If warning light does not come on, check bulb and circuit connections.