why does my Ford F-150 14th Generation (2021-2024) brake pedal feel spongy

Solution

1. Preparation

• Gather necessary tools and ensure the vehicle is on a flat surface.
• Ensure the engine is off and the parking brake is engaged.

2. Check and Refill Brake Fluid

• Sub-steps:
  1. Open the hood and locate the brake fluid reservoir.
  2. Remove the cap and check the fluid level; it should be between the "MIN" and "MAX" marks.
  3. If low, add the recommended brake fluid type (DOT 3 or DOT 4).
  4. Replace the cap securely.

3. Inspect for Leaks

• Sub-steps:
  1. Visually inspect all brake lines, hoses, and connections for signs of fluid leakage.
  2. Check the calipers and wheel cylinders for any fluid accumulation.
  3. If leaks are found, replace the damaged components.

4. Bleed the Brake System

• Sub-steps:
  1. Start with the brake farthest from the master cylinder (usually the passenger rear).
  2. Attach a clear hose to the bleeder valve on the brake caliper and place the other end in a container.
  3. Have an assistant pump the brake pedal several times and hold it down.
  4. Open the bleeder valve to let out air and fluid, then close it before your assistant releases the pedal.
  5. Repeat until no air bubbles are present in the fluid.
  6. Move to the next brake in the order: driver rear, passenger front, driver front.

5. Replace Master Cylinder (if necessary)

• Sub-steps:
  1. Disconnect the battery to prevent electrical issues.
  2. Remove the brake fluid reservoir from the master cylinder.
  3. Disconnect the brake lines using a line wrench to avoid stripping.
  4. Unbolt the master cylinder from the brake booster.
  5. Install the new master cylinder and reverse the removal steps, ensuring all connections are tight.