why does my Tesla Model 3 Highland (2024-present) brake pedal go all the way to the floor?

Solution

1. Preparation

• Gather necessary tools and parts.
• Ensure the vehicle is parked on a flat surface, and engage the parking brake.
• Wear safety goggles and gloves.

2. Inspect and Refill Brake Fluid

• Locate the brake fluid reservoir (usually near the driver's side).
• Remove the cap and check the fluid level; if low, add the appropriate brake fluid (DOT 3 or DOT 4 as specified in the owner's manual).
• Replace the cap securely.

3. Check for Leaks

• Visually inspect brake lines, calipers, and the master cylinder for any signs of fluid leaks.
• If leaks are found, identify the source and proceed to replace the damaged components.
  • Tools Required: Wrench set, brake fluid, rags for cleanup.

4. Bleed the Brake System

• If fluid was added or a leak is found and repaired, bleed the brake system to remove air.
  • Start with the wheel farthest from the master cylinder (usually the right rear).
  • Attach a clear hose to the bleeder valve and place the other end in a container.
  • Have an assistant pump the brake pedal several times and hold it down.
  • Open the bleeder valve to release air and fluid, then close it before the pedal is released.
  • Repeat until no air bubbles are present and fluid runs clear.
• Move to the next wheel and repeat the process in order (right rear, left rear, right front, left front).

5. Inspect Brake Components

• Check brake pads and rotors for wear. Replace if they are below the manufacturer's specifications.
  • Tools Required: Brake caliper tool, torque wrench.

6. Reassemble and Test

• Reassemble any disassembled components, ensuring all bolts are torqued to manufacturer specifications.
• Test drive the vehicle in a safe area to ensure proper brake function.