my Tesla Model S Original (2012-2020) is making a loud whining noise, what's happening?

Tesla Model S Plaid/Refresh (2021-present)

Error Codes

4-8 hours

Time

medium

Difficulty

medium

Severity

3 min read

507 words

Problem Statement

Learn how to diagnose and fix a loud whining noise in Tesla Model S (2012-2020). Step-by-step guide with diagnostic procedures and repair instructions.

Affected Component

Electrical

Estimated Time

4-8 hours

⚠️ Safety Warnings

Important safety information - read before proceeding

•Disconnect the 12V battery before working on electrical systems.
•Allow the vehicle to cool before performing any inspections on the electric motor.

Symptoms

•Loud whining noise from the vehicle
•Possible decrease in performance or acceleration
•Fluctuating or erratic power delivery
•Unusual vibrations felt through the cabin
•Check battery status and range may fluctuate

Diagnostic Steps

1
Inspect the vehicle for any visible signs of wear or damage related to the drive system.
2
Check the battery charge level and any associated error messages on the dashboard.
3
Use an OBD-II scanner to check for any diagnostic trouble codes (DTCs) related to the propulsion system.
4
Inspect the electric motor and gearbox for unusual wear or signs of failure.
5
Listen for the noise at different speeds and under various driving conditions to pinpoint the source.
6
Test the inverter for proper operation and any error codes indicating malfunction.

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

Parts Required

•Replacement bearings (if worn)
•Gearbox seals or gaskets (if leaking)
•Electric motor components (if damaged)

Related Faults

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Diagnostic Steps

1
Inspect the vehicle for any visible signs of wear or damage related to the drive system.
2
Check the battery charge level and any associated error messages on the dashboard.
3
Use an OBD-II scanner to check for any diagnostic trouble codes (DTCs) related to the propulsion system.
4
Inspect the electric motor and gearbox for unusual wear or signs of failure.
5
Listen for the noise at different speeds and under various driving conditions to pinpoint the source.
6
Test the inverter for proper operation and any error codes indicating malfunction.

Solution

1. Preparation

Gather necessary tools and parts.
Disconnect the 12V battery to ensure safety while working on electrical components.

2. Inspect and Remove Drive Components

Tools Required: Socket set, torque wrench, multimeter.
Remove the underbody panel to access the electric motor and gearbox.
Inspect the motor mounts and gearbox for any signs of wear or damage.
If necessary, unbolt the electric motor from the mounts and carefully remove it.

3. Inspect Electric Motor

Sub-steps:
- Check the bearings for wear; replace if they are noisy or have excessive play.
- Inspect the rotor and stator for signs of damage or overheating.
- Use a multimeter to check windings for continuity and shorts.
Safety Warning: Ensure all power sources are disconnected before working on the motor.

4. Inspect Gearbox and Inverter

Sub-steps:
- Inspect the gearbox and fluid levels; replace any worn gears or bearings.
- Check the inverter connections for corrosion or loose wiring.
- Test the inverter output to ensure it meets manufacturer specifications.

5. Reassemble and Test

Reinstall the electric motor and gearbox, ensuring all bolts are torqued to manufacturer specifications.
Reattach the underbody panel and reconnect the 12V battery.
Start the vehicle and monitor for any abnormal noises.