Skoda Octavia NFL (2020-Present) brake pedal feels spongy what should I check

Solution

1. Preparation

• Gather necessary tools and parts.
• Disconnect the battery to ensure safety while working on the brake system.
• Raise the vehicle using a jack and secure it with jack stands.

2. Inspect and Repair Brake Lines

• Sub-steps:
  • Visually inspect all brake lines and hoses for signs of wear, corrosion, or leaks.
  • Replace any damaged or leaking brake lines with new sections.
  • Use a flare nut wrench to avoid damaging the fittings during removal and installation.

3. Replace Brake Fluid

• Sub-steps:
  • Locate the master cylinder reservoir and remove the cap.
  • Use a syringe or brake bleeder to extract old brake fluid.
  • Fill the reservoir with the manufacturer-recommended brake fluid (e.g., DOT 4 for most Skoda vehicles).
  • Ensure the fluid level is at the appropriate mark.

4. Bleed the Brake System

• Sub-steps:
  • Attach a brake bleeder kit or hose to the bleeder valve on the farthest brake caliper from the master cylinder.
  • Open the bleeder valve and have an assistant press the brake pedal several times, holding it down on the last press.
  • Close the bleeder valve before the pedal is released and repeat until clean, bubble-free fluid is seen.
  • Move to the next caliper and repeat the process until all calipers are bled.

5. Final Checks

• Sub-steps:
  • Refill the master cylinder reservoir if needed after bleeding.
  • Reconnect the battery and check the brake warning light.
  • Perform a test drive to ensure the brake pedal feels firm and responsive.

Tools Required:

• OBD-II scanner
• Brake bleeder kit or hose
• Jack and jack stands
• Flare nut wrench
• Syringe or brake fluid extractor

Parts Required:

• Brake fluid (DOT 4)
• Replacement brake lines (if damaged)

Estimated Repair Time: 2-4 hours

Safety Warnings:

• Disconnect the battery before working on the electrical components of the braking system.
• Allow the vehicle to cool before working on brake components to prevent burns.