how to troubleshoot Tesla Model S Plaid/Refresh (2021-present) differential noise

Solution

1. Preparation

• Tools Needed:
  • Jack and jack stands
  • Socket set
  • Torque wrench
  • OBD-II scanner
• Safety Warnings:
  • Ensure the vehicle is on a level surface before lifting.
  • Always use jack stands when working under the vehicle.

2. Differential Fluid Change

1. Lift Vehicle: Use a jack to lift the vehicle and secure it with jack stands.
2. Drain Differential Fluid:
   • Locate the differential drain plug and remove it using a socket.
   • Allow the fluid to fully drain into a suitable container.
3. Inspect Drain Plug:
   • Check the magnet on the drain plug for metal shavings or debris.
   • Clean the drain plug before reinstalling.
4. Refill Differential Fluid:
   • Replace the drain plug and torque it to the manufacturer’s specifications.
   • Locate the fill plug and remove it.
   • Use a fluid pump to refill the differential with the appropriate fluid until it reaches the fill level.
5. Reinstall Fill Plug: Replace the fill plug and torque it to specifications.

3. Inspect and Replace Components (if needed)

1. Check for Wear:
   • Inspect the differential gears for any signs of wear or damage.
   • Check bearings and seals for any signs of failure.
2. Replace Damaged Parts:
   • If any component shows significant wear, replace it with OEM parts.
   • Ensure all components are torqued to the manufacturer’s specifications during reassembly.