why does my Porsche 911 992 (2019-Present) have a hard brake pedal

Solution

1. Preparation

• Gather necessary tools and parts.
• Ensure the vehicle is parked on a level surface and the parking brake is engaged.
• Disconnect the negative battery terminal to ensure safety.

2. Check Brake Fluid Level

• Open the master cylinder reservoir cap.
• Inspect the brake fluid level; if low, top up with the recommended brake fluid (Porsche DOT 4 fluid).

3. Inspect Brake Lines and Components

• Visually inspect brake lines for leaks and corrosion.
• Check brake calipers for any signs of fluid leakage.
• If leaks are found, replace the damaged lines or calipers as necessary.

4. Test and Replace Brake Booster

• If the brake booster is suspected to be faulty, proceed to check the vacuum line:
  • Disconnect the vacuum line from the brake booster.
  • Inspect the line for cracks or blockages; replace if necessary.
• If the brake booster is confirmed to be faulty, remove it:
  • Remove any attached components (e.g., air intake hose, throttle body).
  • Unbolt the brake booster from the firewall.
  • Install the new brake booster and secure it in place.

5. Reassemble and Bleed Brakes

• Reconnect the vacuum line and any other components that were removed.
• Refill and bleed the brake system to remove any air bubbles using a brake bleeder kit.
• Ensure proper pedal feel before finalizing the assembly.