my Porsche 911 992 (2019-Present) has a soft brake pedal, is it safe to drive?

Solution

1. Preparation

• Tools Required: Brake fluid, brake line wrench, vacuum gauge, socket set, jack and jack stands.
• Ensure the vehicle is parked on a level surface and the engine is off.
• Wear safety gloves and goggles to prevent injury from brake fluid.

2. Inspect and Refill Brake Fluid

• Open the master cylinder reservoir cap.
• Inspect the brake fluid level; if low, fill it with the recommended brake fluid (Porsche DOT 4).
• Check the fluid for contamination; if dirty, proceed to flush the system.

3. Brake System Inspection

• Tools Required: Torque wrench, brake line wrench.
• Raise the vehicle using a jack and secure it with jack stands.
• Visually inspect brake lines, hoses, and calipers for leaks or damage.
• Remove the wheel and check brake pads for thickness; replace if below 3mm.

4. Bleed Brake Lines

• Connect a vacuum gauge to the bleeder valve on the farthest brake caliper.
• Open the bleeder valve and allow fluid to flow until no air bubbles are visible.
• Repeat for each brake caliper in the following order: rear passenger, rear driver, front passenger, front driver.
• Ensure to keep the master cylinder reservoir filled during the bleeding process.

5. Reassemble and Test

• Reinstall the wheels and lower the vehicle.
• Test the brake pedal for firmness before driving the vehicle.
• If the brake pedal remains soft, further inspection of the master cylinder may be necessary.