how to fix Honda Civic 11th Generation (2022-Present) brake pedal feels soft?

Solution

1. Preparation

• Gather tools and parts.
• Ensure the vehicle is on a level surface.
• Wear safety glasses and gloves.
• Disconnect the negative battery terminal to avoid electrical issues.

2. Check and Refill Brake Fluid

1. Locate the brake fluid reservoir under the hood.
2. Remove the reservoir cap and inspect the fluid level.
3. If low, fill with the appropriate brake fluid (DOT 3 or DOT 4 as specified in the owner’s manual).
4. Replace the cap securely.

3. Bleed the Brake System

1. Starting at the farthest brake from the master cylinder (usually the rear passenger side):
   • Attach a clear hose to the bleeder valve on the brake caliper.
   • Place the other end into a container to catch fluid.
2. Have an assistant press the brake pedal several times and hold it down.
3. Open the bleeder valve to allow air and old fluid to escape, then close it before your assistant releases the pedal.
4. Repeat until no air bubbles appear in the fluid.
5. Move to the next brake in sequence (rear driver, front passenger, front driver) and repeat the process.

4. Inspect and Replace Components (if necessary)

1. If soft pedal persists, check the master cylinder:
   • Remove the master cylinder from the brake booster.
   • Inspect for internal leaks or damage.
   • Replace with a new master cylinder if needed.
2. Check the brake booster for any signs of failure:
   • Vacuum test the booster using a vacuum gauge.
   • Replace if it does not hold vacuum.

5. Final Checks

1. Reconnect the negative battery terminal.
2. Test the brake pedal feel before taking the vehicle on a road test.
3. Ensure all tools and materials are removed from the engine bay.