BMW X3 2005

Bleeding the Brake System


Clean, high quality brake fluid is essential to the safe and proper operation of the brake system. You should always buy the highest quality brake fluid that is available. If the brake fluid becomes contaminated, drain and flush the system, then refill the master cylinder with new fluid. Never reuse any brake fluid. Any brake fluid that is removed from the system should be discarded. Also, do not allow any brake fluid to come in contact with a painted surface; it will damage the paint.

Brake fluid contains polyglycol ethers and polyglycols. Avoid contact with the eyes and wash your hands thoroughly after handling brake fluid. If you do get brake fluid in your eyes, flush your eyes with clean, running water for 15 minutes. If eye irritation persists, or if you have taken brake fluid internally, IMMEDIATELY seek medical assistance.

  1. Remove the reservoir cap and fill the brake reservoir with brake fluid.
  3. Connect a vinyl tube to the wheel cylinder bleeder screw and insert the other end of the tube in a clear container.
  5. Slowly depress the brake pedal several times.
  7. While depressing the brake pedal fully, loosen the bleeder screw until fluid runs out. Then close the bleeder screw and release the brake pedal.
  9. Repeat these steps until there are no more bubbles in the fluid escaping to the clear container.
  11. Tighten the bleeder screw to 80 inch lbs. (9 Nm).
  13. Repeat the above procedure for each wheel.