Porsche 991.1 Carrera Coolant Flush and Fill (2012 - 2016)

Introduction

This tutorial provides a step-by-step guide for performing a coolant flush and fill on a Porsche 991.1 Carrera (2012-2016). Proper coolant maintenance is essential for engine performance and longevity. This process involves using a specialized refill tool to ensure the system is filled correctly and to avoid damage.

Step 1: Prepare the Vehicle

• Ensure the engine is completely cool before starting the process.
• Gather necessary tools, including the Schwaben coolant refill tool, a six-millimeter Allen wrench, and hose clamp pliers.
• Have buckets ready for draining coolant.

Step 2: Access the Coolant System

• Locate the coolant fill port on the left side of the engine tray.
• Remove the engine coolant fan assembly:
  • Take out the metal ring inside the center air snorkel.
  • Pull up on the rear of the housing to release it from the chassis.
• If necessary, disconnect the wiring for each fan.

Step 3: Drain the Coolant

• Remove the coolant fill cap to facilitate draining.
• Use a six-millimeter Allen wrench to remove the two drain plugs located underneath the vehicle.
• Allow the coolant to fully drain into buckets.
• Replace the crush washers when reinstalling the drain plugs.

Step 4: Remove Underbody Components

• Consider removing the underbody trays for better access.
• Release the coolant hoses at the lowest points on the rear:
  • Focus on the hen coupling on the supply and return lines.
• Check all hoses for wear or damage.

Step 5: Prepare for Refilling

• Remove the oil filler cap and the E27 Torx screw holding the plate in place.
• Move the plate aside and, if needed, disconnect the oil filler hose using hose clamp pliers.

Step 6: Use the Coolant Refill Tool

• Ensure you have the Schwaben coolant refill tool, which includes:
  • A vacuum valve and vacuum fill mechanism.
  • Various hoses and adapters for sealing.
• Attach the appropriate adapter to the fill port for a tight seal.
• Connect the compressor air hose to the refill tool.

Step 7: Create a Vacuum

• Run the compressor to create a vacuum in the system.
• Monitor the gauge; you should achieve approximately 0.8 bar of vacuum pressure.
• Wait for 3 to 5 minutes to check for any leaks—if the vacuum drops, there is a leak.

Step 8: Fill the System

• Once a stable vacuum is confirmed, open the fill valve to allow coolant to fill the system.
• Keep the hose submerged in the coolant to prevent air from entering the system.
• Wait until the vacuum gauge returns to zero, indicating the system is full.

Step 9: Finalize the Process

• Remove the vacuum mechanism and open the bleeder valve by lifting it to the up position.
• Reconnect the engine coolant fans and plug in your scan tool.
• Use the scan tool to run the system in bleed coolant mode, following the provided instructions.
• After bleeding, close the bleed valve.

Step 10: Check Coolant Levels

• Start the engine with the cap off and allow it to warm up.
• Check the engine coolant level; it should be between the minimum and maximum marks.
• Add or remove coolant as necessary.

Conclusion

Performing a coolant flush and fill on a Porsche 991.1 Carrera is a straightforward process when using the right tools and following the steps outlined. Regular maintenance will help keep your vehicle running smoothly. For further assistance or parts, refer to Pelican Parts' resources.