my Skoda Octavia's brake pedal goes to the floor what to check

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. Inspect and Replace Brake Fluid

• Sub-steps:
  1. Remove the brake fluid reservoir cap.
  2. If the fluid is low, refill it with the recommended brake fluid (DOT 4).
  3. If the fluid appears contaminated, drain the system.
  4. Bleed the brake system to remove air bubbles.
• Tools Required: Brake fluid, funnel, brake bleeder kit.

3. Inspect and Repair Brake Lines and Master Cylinder

• Sub-steps:
  1. Visually inspect all brake lines and hoses for cracks, corrosion, or leaks.
  2. If any damage is found, replace the affected brake lines.
  3. Inspect the master cylinder for leaks or fluid seepage; replace if necessary.
  4. Tighten any loose fittings and ensure connections are secure.
• Tools Required: Wrench set, pliers, brake line fittings.

4. Check and Replace Brake Pads and Rotors

• Sub-steps:
  1. Remove the wheel to access the brake assembly.
  2. Check the thickness of the brake pads; replace if worn below the minimum specification (usually 3 mm).
  3. Inspect rotors for warping or excessive wear and replace if necessary.
  4. Reassemble the brake assembly and wheel.
• Tools Required: Jack and jack stands, lug wrench, socket set.

5. Test the Brake Booster

• Sub-steps:
  1. With the engine off, pump the brake pedal several times to deplete vacuum.
  2. Start the engine and press the brake pedal; it should feel firmer with the engine running.
  3. If there is no change, the brake booster may need replacement.
• Tools Required: Vacuum gauge (optional).