why does my Honda Accord 9th Generation (2013-2017) brake pedal feel soft and spongy

Solution

1. Preparation

• Gather necessary tools and parts.
• Ensure the vehicle is on a level surface and secure it with wheel chocks.
• Wear safety glasses and gloves.

2. Check and Replace Brake Fluid

1. Locate the master cylinder: Open the hood and find the brake fluid reservoir.
2. Inspect brake fluid: Remove the cap and check the fluid level. If low, top it off with the recommended DOT brake fluid (usually DOT 3 or DOT 4).
3. Flush the system (if moisture is detected):
   • Remove brake fluid: Use a turkey baster to remove old fluid from the reservoir.
   • Bleed the brakes: Starting from the wheel farthest from the master cylinder (usually the right rear), attach a clear tube to the bleeder valve and have an assistant pump the brake pedal. Open the valve to allow fluid to flow out until clear fluid appears. Repeat this for all wheels.
   • Refill reservoir: Continuously monitor and refill the master cylinder reservoir during the process.

3. Inspect and Replace Brake Components

1. Remove wheel: Use a socket set to take off the lug nuts and remove the wheel.
2. Inspect brake pads and rotors: Check for thickness and any signs of damage or uneven wear. Replace if necessary.
   • Pad replacement: Remove the caliper bolts and slide off the caliper. Replace pads and reassemble.
   • Rotor replacement: If rotors are damaged, remove the caliper, then the rotor retaining screws and slide the rotor off. Install the new rotor and reassemble.

4. Check Brake Booster

1. Inspect vacuum line: Ensure the vacuum line connected to the brake booster is intact and free of leaks.
2. Test brake booster: With the vehicle off, press the brake pedal several times to deplete the booster. Then, press the pedal and start the engine. If the pedal sinks slightly, the booster is functioning properly. If not, consider replacing the brake booster.