Transmission fluid leak Q5 FY

Transmission Fluid Leak Diagnosis and Repair for Audi Q5 FY (2018-2024)

Tools Required

• Car lift or jack stands
• Transmission fluid catch pan
• Socket set
• Torque wrench
• Transmission fluid funnel
• Clean rags
• New transmission fluid (as per Audi specifications)
• Transmission filter and gasket (if needed)
• Sealant (if needed)

Repair Instructions

1. Transmission Pan Gasket Replacement:

• Step 1: Drain the Transmission Fluid

  • Place the transmission fluid catch pan under the transmission pan.
  • Remove the transmission drain plug (if equipped) or loosen the pan bolts to allow fluid to drain.

• Step 2: Remove the Transmission Pan

  • Fully remove the bolts securing the transmission pan.
  • Carefully remove the pan and clean the mating surface on both the pan and the transmission housing.

• Step 3: Replace the Gasket

  • Remove the old gasket from the transmission pan.
  • Install a new gasket ensuring it is properly aligned.

• Step 4: Reinstall the Transmission Pan

  • Position the transmission pan back onto the transmission.
  • Tighten the pan bolts to the manufacturer’s specified torque using a torque wrench.

• Step 5: Refill Transmission Fluid

  • Use the transmission fluid funnel to add new transmission fluid through the fill port.
  • Ensure the fluid level is correct and does not exceed the maximum mark.

2. Transmission Cooler Line Replacement:

• Step 1: Identify the Leaking Line

  • Locate the leaking transmission cooler line.

• Step 2: Remove the Faulty Line

  • Use the appropriate socket or line wrench to disconnect the line.
  • Remove any retaining clips or brackets securing the line.

• Step 3: Install New Line

  • Route the new line in the same path as the old one.
  • Secure it with any necessary brackets or clips.

• Step 4: Check for Leaks

  • Refill the transmission fluid if necessary and start the engine.
  • Inspect for leaks at the connection points.

3. Seal Replacement:

• Step 1: Remove the Old Seal

  • If the leak is from a shaft seal, use the appropriate tool to remove the old seal carefully.

• Step 2: Install New Seal

  • Lightly lubricate the new seal with transmission fluid.
  • Press the new seal into place, ensuring it is seated evenly.

Final Steps

• Check Operation:

  • Lower the vehicle and start the engine.
  • Shift through all gears to ensure smooth operation.
  • Recheck fluid levels and add more if necessary.

• Test Drive:

  • Take the vehicle for a test drive to ensure repair effectiveness.
  • Reinspect for any leaks after the test drive.

Safety Precautions

• Always work on a cool engine to prevent burns.
• Ensure the vehicle is securely lifted to prevent accidents.
• Dispose of old transmission fluid properly as per local regulations.

By following these detailed steps, you should be able to effectively diagnose and repair a transmission fluid leak in an Audi Q5 FY.