my Porsche Cayenne E3 (2018-Present) shows a transmission fluid leak, what to check?

Solution

1. Preparation

• Gather tools and materials needed for the repair.
• Ensure the vehicle is on a level surface and safely lifted using jack stands.
• Wear appropriate safety gear, including gloves and goggles.

2. Identify the Source of the Leak

• Inspect Transmission Pan:
  • Remove any debris around the transmission pan.
  • If the pan is damaged, replace it.
• Check Seals and Gaskets:
  • Inspect the transmission pan gasket and replace if it's worn or leaking.
  • Check the input/output shaft seals for damage; replace if necessary.
• Examine Cooler Lines:
  • Tighten any loose connections on the cooler lines.
  • Replace any damaged cooler lines if they show signs of wear.

3. Fluid Replacement

• Drain Old Transmission Fluid:
  • Place a drain pan under the transmission.
  • Remove the transmission pan bolts and carefully lower the pan to drain old fluid.
• Install New Fluid:
  • Replace the transmission filter if applicable.
  • Clean the transmission pan and install a new gasket.
  • Reinstall the pan and torque the bolts to the manufacturer's specifications.
  • Refill the transmission with new fluid via the dipstick tube, following the manufacturer’s recommended fluid type and capacity.

4. Final Inspection

• Start the engine and let it idle for a few minutes.
• Check for any leaks around the transmission pan, seals, and cooler lines.
• Ensure the transmission fluid level is correct and adjust as needed.