my Skoda Octavia NFL (2020-Present) has a hard brake pedal what's wrong

Solution

1. Preparation

• Gather tools and parts required for the repair.
• Ensure the vehicle is parked on a level surface and the parking brake is engaged.
• Disconnect the battery to prevent electrical shorts during the repair.
• Tools Required: Socket set, wrenches, OBD-II scanner, brake fluid, vacuum gauge.

2. Inspect and Replace Brake Fluid

• Open the brake fluid reservoir cap.
• Check the fluid condition; if contaminated or low, drain the old fluid.
• Refill with new brake fluid (DOT 4 recommended) to the specified level.
• Reattach the reservoir cap securely.

3. Brake Booster Inspection

• Remove the engine cover (if applicable) to access the brake booster.
• Inspect the booster for any visible damage or corrosion.
• Use a vacuum gauge to test the brake booster; it should hold a vacuum. If not, proceed to replace the booster.
• To replace, disconnect the vacuum hose and unbolt the booster from the firewall.

4. Replace Brake Booster (if necessary)

• Remove the faulty brake booster from the vehicle.
• Install the new brake booster by reversing the removal steps.
• Tighten bolts to manufacturer torque specifications (typically around 20-25 Nm).
• Reconnect the vacuum hose ensuring a secure fit.

5. Final Checks

• Reconnect the battery.
• Test the brake pedal feel with the engine running to confirm proper operation.
• Inspect for leaks around the brake booster and brake lines.