my Skoda Octavia NFL (2020-Present) brake pedal goes to the floor, what should I do?

Solution

1. Preparation

• Gather all necessary tools and parts.
• Ensure the vehicle is parked on a flat surface and engage the parking brake.
• Wear appropriate safety gear (gloves and safety glasses).

2. Check Brake Fluid Level

• Open the hood and locate the brake fluid reservoir.
• If the fluid level is low, add the appropriate brake fluid (DOT 4 for most Skoda models).
• If fluid is added, monitor for leaks before proceeding.

3. Inspect Brake Lines and Components

• Use a socket set to remove the wheels for a full inspection.
• Visually inspect brake lines for any signs of wear or leaks.
• Check the condition of brake pads and rotors; replace if worn beyond specifications.

4. Replace Master Cylinder (if necessary)

• Disconnect the negative battery terminal.
• Remove any components obstructing access to the master cylinder.
• Unbolt the master cylinder from the brake booster using a socket set.
• Disconnect brake lines carefully to avoid fluid loss; use a flare nut wrench.
• Install the new master cylinder, ensuring it is properly aligned.
• Reconnect the brake lines and torque to manufacturer specifications.

5. Bleed the Brake System

• Reconnect the negative battery terminal.
• Begin bleeding the brake system starting from the furthest wheel from the master cylinder (usually the passenger rear).
• Use a brake bleeder kit or have an assistant pump the brake pedal while you open and close the bleeder valve on each caliper.
• Ensure no air bubbles are present in the fluid before closing the bleeder valve.

6. Reassemble and Test

• Reinstall the wheels and lower the vehicle.
• Test the brake pedal for firmness before taking the vehicle for a test drive.
• Monitor for any leaks and ensure all systems are functioning correctly.