my Skoda Octavia's brake pedal goes to the floor what should I do

Solution

1. Preparation

• Gather tools and parts required for the repair.
• Ensure the vehicle is on a flat surface and secure it with wheel chocks.
• Disconnect the battery before starting any work on the brake system.

2. Inspect and Replace Brake Fluid

• Sub-steps:
  • Remove the master cylinder reservoir cap.
  • If the fluid is low, top it up with the recommended brake fluid (DOT 4).
  • Check for contamination in the fluid; if dirty, proceed to flush the system.

3. Identify and Repair Leaks

• Sub-steps:
  • Visually inspect all brake lines, hoses, and connections for signs of leaks.
  • If leaks are found, replace the affected brake line or hose.
  • Tighten any loose fittings or connections as necessary.

4. Replace Worn Brake Components

• Sub-steps:
  • Remove the wheel to access the brake caliper and rotor.
  • Inspect the brake pads for thickness; replace if worn below the manufacturer's specifications.
  • Check the brake rotor for scoring or excessive wear; replace if necessary.
  • Install new brake pads and reassemble the caliper with proper torque specifications (typically 25-30 Nm).

5. Bleed the Brake System

• Sub-steps:
  • Attach a brake bleeder kit or a clear tube to the bleeder valve on the caliper.
  • Have an assistant pump the brake pedal several times and hold it down.
  • Open the bleeder valve to release air and old fluid, then close it before the pedal is released.
  • Repeat until no air bubbles are visible and clean fluid flows out, then repeat for all calipers.

6. Final Assembly and Testing

• Sub-steps:
  • Reinstall the wheel and lower the vehicle.
  • Reconnect the battery.
  • Start the engine and test the brake pedal for firmness.

Tools Required:

• OBD-II scanner
• Brake bleeder kit
• Socket set
• Wrench set
• Torque wrench
• Screwdriver set
• Brake fluid (DOT 4)
• Replacement brake pads and rotors (if necessary)

Parts Required:

• Brake fluid (DOT 4)
• Brake pads
• Brake rotors (if worn)
• Brake lines or hoses (if leaking)

Estimated Repair Time: 2-4 hours

Safety Warnings:

• Always allow the engine to cool before working on brake components.
• Use protective eyewear and gloves when handling brake fluid, as it can damage paint and skin.