Tools and Materials Needed:
- Brake fluid (DOT 3 or DOT 4, as recommended in your vehicle's manual)
- Brake fluid bleed kit or clear tubing
- Wrench
- Assistant
Procedure:
1. Park your car on a level surface and turn off the engine. Engage the parking brake to keep the vehicle from moving.
2. Identify the brake bleeder screws on each wheel. They're usually located near the calipers or wheel cylinders.
3. Start with the rear right wheel (passenger side). This is typically the furthest point from the master cylinder and helps to prevent introducing air into the system.
4. Clean the bleeder screw with a wire brush to remove any dirt or debris.
5. Attach a brake fluid collection container to the end of the bleed tube. Make sure the container is clear enough so you can see the brake fluid as it flows out.
6. Attach the other end of the bleed tube snugly onto the bleeder screw.
7. Open the bleeder screw slightly with the wrench. Start slowly and only a quarter or half turn to prevent introducing air into the system.
8. Have your assistant depress the brake pedal slowly and steadily until it reaches the floor.
9. While the brake pedal is fully depressed, close the bleeder screw.
10. Repeat steps 8 and 9 a few times until no bubbles are visible in the brake fluid flowing into the collection container. This indicates that air has been removed from the brake lines.
11. Repeat steps 3 to 10 for the other wheels, following the sequence of rear left, front right, and front left.
12. After bleeding all four wheels, top up the brake fluid reservoir with fresh fluid to the recommended level.
13. Test the brakes by gently applying pressure to the brake pedal. The pedal should feel firm and responsive.
14. Reinstall the bleeder screw caps to prevent leaks.
Notes:
- Make sure to use the proper brake fluid recommended for your Ford Focus. Mixing different types of brake fluid can cause problems.
- Brake fluid is corrosive, so avoid getting it on your skin or eyes. Wear gloves and eye protection when working on the brake system.
- If you're not confident in performing this procedure, it's best to consult a professional mechanic.
