how to fix Tesla Model S Original (2012-2020) drive unit noise

Tesla Model S Plaid/Refresh (2021-present)

Error Codes

4-8 hours

Time

hard

Difficulty

high

Severity

4 min read

621 words

⚠️ Safety Warning

This issue requires immediate attention. If you are not experienced with automotive repairs, consult a professional mechanic. Working on critical systems can be dangerous.

Problem Statement

Learn how to diagnose and fix drive unit noise in Tesla Model S (2012-2020). Step-by-step guide with symptoms, diagnostic steps, and repair instructions.

Affected Component

Transmission

Estimated Time

4-8 hours

⚠️ Safety Warnings

Important safety information - read before proceeding

•Disconnect the battery before working on electrical systems.
•Allow the vehicle to cool before performing any work.

Symptoms

•Unusual grinding or whining noises during acceleration
•Clicking or popping sounds when turning
•Increased vibration felt through the floor or steering wheel
•Intermittent loss of power or hesitation during acceleration
•Warning messages related to the drive unit on the dashboard

Diagnostic Steps

1
Scan for error codes using OBD-II scanner to identify any fault codes related to the drive unit.
2
Perform a visual inspection of the drive unit and surrounding components for any signs of damage or wear.
3
Check fluid levels in the drive unit, if applicable, to ensure they are at the proper levels.
4
Inspect the drive unit mounts for signs of deterioration or failure.
5
Test the drive unit's electrical connections with a multimeter to ensure proper voltage and continuity.
6
Listen for noise characteristics while stationary and during a test drive to narrow down the source.

Solution

💡 Expert Tip

For complex repairs like this, consider taking photos at each step. This helps if you need to reverse a step or consult with a mechanic. Also, keep all removed parts organized - you may need to reference them during reassembly.

Verification

After completing the repair, verify that the issue has been resolved:

✓Test the affected component to ensure it functions correctly
✓Check for any error codes or warning lights
✓Monitor the vehicle for a few days to ensure the issue does not recur

Prevention Tips

To prevent this issue from occurring again:

•Follow the manufacturer's recommended maintenance schedule
•Address warning signs early before they develop into major issues
•Use quality parts and fluids recommended for your vehicle
•Keep detailed records of all repairs and maintenance

Tools & Equipment Required

•OBD-II scanner
•Socket set
•Torque wrench
•Multimeter
•Ratchet and socket

Parts Required

•Replacement bearings
•Seals or gaskets (if damaged)
•Electrical connectors (if corroded)

Related Faults

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Diagnostic Steps

1
Scan for error codes using OBD-II scanner to identify any fault codes related to the drive unit.
2
Perform a visual inspection of the drive unit and surrounding components for any signs of damage or wear.
3
Check fluid levels in the drive unit, if applicable, to ensure they are at the proper levels.
4
Inspect the drive unit mounts for signs of deterioration or failure.
5
Test the drive unit's electrical connections with a multimeter to ensure proper voltage and continuity.
6
Listen for noise characteristics while stationary and during a test drive to narrow down the source.

Solution

1. Preparation

Gather necessary tools and parts.
Disconnect the vehicle's battery to prevent any electrical issues during the repair.
Ensure the area is well-lit and clean.

2. Remove the Drive Unit

Lift the vehicle using a hydraulic lift or jack stands to access the undercarriage.
Remove the rear wheels using a socket set.
Detach the underbody shield by unscrewing the fasteners using a ratchet and socket.
Disconnect the drive unit wiring harness and any sensors attached to the drive unit.
Unbolt the drive unit from its mounts using the appropriate socket size (check manufacturer specifications for torque values).
Carefully lower the drive unit from the vehicle with assistance if necessary.

3. Inspect and Repair

Open the drive unit casing, carefully removing any seals or gaskets to access the internal components.
Inspect gears, bearings, and seals for wear or damage, replacing any components as necessary (e.g., bearings may need replacement if they are noisy).
Clean all mating surfaces with a suitable solvent to ensure a good seal upon reassembly.
Replace any worn seals or gaskets with new parts to prevent fluid leaks.

4. Reassemble the Drive Unit

Reinstall the drive unit cover, ensuring all screws are tightened to manufacturer specifications.
Reattach the drive unit to the vehicle, ensuring all bolts are secured to the correct torque value.
Reconnect all wiring and sensors to the drive unit.
Reattach the underbody shield and reinstall the rear wheels.

5. Final Checks

Reconnect the vehicle's battery.
Perform a system reset via the car's touchscreen to clear any error codes.