my Genesis G70’s brakes feel spongy what can cause this

Solution

1. Preparation

• Gather necessary tools and parts.
• Park the vehicle on a flat surface, engage the parking brake, and place wheel chocks behind the rear wheels.

2. Check and Refill Brake Fluid

• Locate the brake fluid reservoir.
• If the fluid level is low, top it off with the manufacturer's recommended brake fluid (DOT 3 or DOT 4).
• Inspect for any leaks around the reservoir and brake lines.

3. Inspect Brake Lines and Hoses

• Visually examine the brake lines and hoses for cracks, fraying, or signs of wear.
• If any damage is found, replace the defective brake line or hose using appropriate fittings.
• Ensure all connections are secure and free of leaks.

4. Bleed the Brake System

• Use a brake bleeder kit to bleed the brakes:
  1. Start with the wheel furthest from the master cylinder (usually rear passenger side).
  2. Connect the bleeder hose to the bleeder valve on the brake caliper.
  3. Open the bleeder valve and have an assistant press the brake pedal several times until no air bubbles are present in the fluid.
  4. Close the bleeder valve and check fluid level in the reservoir, adding more if necessary.
  5. Repeat for all wheels in the correct order (rear passenger, rear driver, front passenger, front driver).

5. Inspect and Replace Brake Pads and Rotors (if necessary)

• If pads are worn below the minimum thickness or rotors show signs of warping:
  1. Remove the wheel to access the brake caliper.
  2. Unbolt the caliper and remove it from the rotor.
  3. Remove the old brake pads and inspect the rotor.
  4. If the rotor is damaged, replace it with a new one.
  5. Install new brake pads, ensuring they are properly seated.
  6. Reattach the caliper and torque bolts to the manufacturer's specifications.