my Porsche Cayenne E3 (2018-Present) brakes feel spongy what's wrong

Solution

1. Preparation

• Tools Required: Brake fluid, clean rags, jack and jack stands, wheel chocks
• Ensure the vehicle is parked on a level surface and the parking brake is engaged.
• Disconnect the battery to prevent any electrical issues.

2. Inspect and Top Off Brake Fluid

• Locate the brake fluid reservoir.
• If the fluid level is low, clean around the reservoir cap to prevent contamination, then remove the cap.
• Top off with the recommended brake fluid (usually DOT 3 or DOT 4).
• Reinstall the cap securely.

3. Inspect Brake Components

• Tools Required: Wrench set, socket set
• Lift the vehicle using a jack and secure it with jack stands.
• Remove the wheels to access the brake calipers and pads.
• Inspect the brake pads for thickness; replace if they are below the manufacturer's specifications.
• Check the brake rotors for any signs of warping or damage; resurface or replace as necessary.

4. Bleed the Brake System

• Tools Required: Brake bleeder kit, clear tubing
• Start at the wheel farthest from the master cylinder (usually the rear passenger side).
• Attach the clear tubing to the bleeder valve and place the other end in a container.
• Have an assistant press the brake pedal while you open the bleeder valve to release air and old fluid; close the valve before the pedal is released.
• Repeat this process for all wheels in the correct order (rear passenger, rear driver, front passenger, front driver).
• Ensure the brake fluid reservoir remains filled throughout the process.

5. Reassemble and Test

• Reinstall the wheels and lower the vehicle.
• Reconnect the battery.
• Test the brake pedal feel; it should now feel firm.