why is my Genesis G70's brake pedal sinking to the floor

Solution

1. Preparation

• Gather necessary tools and parts.
• Ensure the vehicle is on a flat surface and securely lifted using jack stands.
• Wear safety gloves and goggles for protection.

2. Inspect and Replace Brake Fluid

• Sub-steps:
  • Locate the master cylinder reservoir and remove the cap.
  • If fluid is low, add the appropriate brake fluid (DOT 3 or DOT 4, as specified in the owner's manual).
  • Bleed the brakes to remove air, starting from the farthest wheel from the master cylinder.

3. Repair or Replace Leaking Components

• Sub-steps:
  • Identify the source of any leaks (e.g., brake lines, calipers, or master cylinder).
  • If brake lines are damaged, replace them using a line wrench to avoid rounding the fittings.
  • For leaking calipers, remove the caliper bolts, replace the caliper assembly if necessary, and install new brake pads.
  • If the master cylinder is defective, remove it from the brake booster and replace it with a new unit.

4. Bleed Brake System

• Sub-steps:
  • Using a brake bleeder kit, attach the clear tubing to the bleeder screw on the brake caliper.
  • Open the bleeder screw and pump the brake pedal until no air bubbles are visible in the fluid.
  • Close the bleeder screw and repeat for each wheel, starting from the farthest wheel to the nearest.
  • Ensure the brake fluid reservoir is kept full throughout the process.

5. Final Inspection

• Sub-steps:
  • Inspect all connections and ensure there are no leaks.
  • Recheck brake fluid levels and top off if necessary.
  • Test the brake pedal feel before taking the vehicle on the road.

Tools Required:

• Brake bleeder kit
• Socket set
• Line wrench
• Torque wrench
• Jack and jack stands

Parts Required:

• Brake fluid (DOT 3 or DOT 4)
• Brake lines (if damaged)
• Brake caliper (if leaking)
• Master cylinder (if defective)

Estimated Repair Time: 2-4 hours

Safety Warnings:

• Always disconnect the battery before working on the brake system.
• Allow the vehicle to cool before handling hot components.