why does my Honda Pilot YF4 (2023-Present) brake pedal feel spongy

Solution

1. Preparation

• Gather necessary tools and parts.
• Ensure the vehicle is parked on a flat surface and secured with wheel chocks.
• Wear gloves and safety glasses for protection.

2. Inspect and Replace Brake Fluid

1. Check Brake Fluid Level:
   • Open the hood and locate the brake fluid reservoir.
   • Ensure the fluid is at the correct level; if low, top up with the manufacturer's recommended brake fluid (DOT 3 or DOT 4).
2. Replace Contaminated Brake Fluid:
   • Use a brake bleeder kit or a turkey baster to remove old fluid from the reservoir.
   • Refill with fresh brake fluid.
   • Bleed all four brakes to remove air from the system.

3. Inspect Brake Lines and Components

1. Visual Inspection:
   • Inspect brake lines for cracks or leaks.
   • Check the brake calipers and master cylinder for signs of fluid leakage.
2. Replace Damaged Components:
   • If any leaks are found, replace the affected brake line, caliper, or master cylinder as necessary.

4. Brake Booster Check

1. Test the Brake Booster:
   • With the engine off, press the brake pedal several times to deplete the vacuum.
   • Start the engine and press the pedal; it should feel firmer. If not, the brake booster may need replacement.

5. Brake Pad and Rotor Inspection

1. Remove Wheel:
   • Use a lug wrench to remove the wheel where the spongy pedal is felt.
2. Inspect Brake Pads and Rotors:
   • Check brake pads for thickness (minimum 3mm recommended).
   • Inspect rotors for scoring or warping; replace if necessary.
3. Reassemble:
   • Reinstall the wheel and torque the lug nuts to the manufacturer’s specifications.