how to fix the whirring noise from the differential in Tesla Outback 4th Generation (2010-2014)

Solution

1. Preparation

• Gather tools and parts needed for the repair.
• Tools Required: Floor jack, jack stands, socket set, torque wrench, differential fluid pump, OBD-II scanner.
• Parts Required: Differential fluid, new differential gasket, and possibly new bearings or gears if damage is found.
• Ensure the vehicle is on a flat surface and securely lifted with jack stands.

2. Drain Differential Fluid

• Place a drain pan under the differential.
• Remove the differential drain plug using the socket set.
• Allow the old fluid to drain completely into the pan.

3. Inspect and Replace Components

• Inspect Gears and Bearings:

  • Remove the differential cover by unscrewing the bolts. Carefully pry it off if necessary.
  • Inspect the ring and pinion gears for wear or damage. If damaged, they must be replaced.
  • Check the bearings for play or roughness; replace if necessary.

• Replace Bearings (if needed):

  • Remove the old bearings using a bearing puller.
  • Install new bearings by pressing them into place, ensuring they are seated properly.

4. Clean and Reassemble

• Clean the differential cover and mating surfaces thoroughly to remove old gasket material.
• Apply a new gasket or sealant as per manufacturer specifications.
• Reattach the differential cover and tighten the bolts to the specified torque using a torque wrench.

5. Refill with New Differential Fluid

• Use the differential fluid pump to fill the differential with new fluid until it reaches the proper level.
• Replace the drain plug securely.