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

Solution

1. Preparation

• Tools Required: Jack, jack stands, wheel chocks, socket set, torque wrench, fluid catch pan.
• Gather necessary replacement parts if needed (e.g., U-joints, differential fluid).

2. Check and Replace Differential Fluid

1. Drain Fluid:
   • Position a fluid catch pan under the differential.
   • Remove the drain plug using the socket set and allow the fluid to fully drain.
2. Inspect Fluid:
   • Check the drained fluid for metal shavings and contamination.
   • If the fluid is dirty or has metal particles, replace it.
3. Refill with New Fluid:
   • Replace the drain plug and torque to manufacturer specifications.
   • Using a funnel, fill the differential with new fluid until it reaches the fill plug level. Use manufacturer-recommended fluid type.

3. Inspect and Replace U-Joints (if needed)

1. Remove Driveshaft:
   • Unbolt the driveshaft from the differential and transmission using a socket set.
   • Carefully slide the driveshaft out from its mount.
2. Inspect U-Joints:
   • Check for play or excessive wear in the U-joints. If they are worn, replace them.
3. Replace U-Joints:
   • Use a press to remove old U-joints and install new ones.
   • Ensure they are properly lubricated before installation.

4. Reinstall Driveshaft

1. Position Driveshaft:
   • Align the driveshaft with the transmission and differential.
2. Bolt Down:
   • Securely bolt the driveshaft back to the transmission and differential, ensuring torque specifications are met.

5. Test Drive

• Lower the vehicle and take it for a test drive to ensure the whining noise has been resolved.