why is my Tesla Model S Original (2012-2020) making a whining noise when accelerating

Tesla Model S Plaid/Refresh (2021-present)

Error Codes

2-4 hours

Time

medium

Difficulty

medium

Severity

3 min read

483 words

Problem Statement

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

Affected Component

Electrical

Estimated Time

2-4 hours

⚠️ Safety Warnings

Important safety information - read before proceeding

•Disconnect the high-voltage battery before working on electrical systems.
•Allow the vehicle to cool before inspecting the motor or gearbox to avoid burns.

Symptoms

•Whining noise increases with acceleration
•Possible vibration felt in the cabin
•Noise may vary with vehicle speed rather than engine RPM
•Reduced acceleration performance
•Unusual sounds during deceleration or coasting

Diagnostic Steps

1
Inspect the vehicle for any visible signs of damage or loose components in the drivetrain.
2
Check for any error codes using the Tesla diagnostic tool or OBD-II scanner.
3
Listen for the noise at different speeds and under various driving conditions to determine if it is consistent.
4
Test the electric motor for operational efficiency and unusual heat levels.
5
Inspect wheel bearings and tires for any signs of wear or damage that could contribute to noise.

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
•Jack and jack stands
•Multimeter

Parts Required

•Replacement motor bearings (if needed)
•Gearbox lubricant (if necessary)
•Wheel bearings (if worn)

Related Faults

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Diagnostic Steps

1
Inspect the vehicle for any visible signs of damage or loose components in the drivetrain.
2
Check for any error codes using the Tesla diagnostic tool or OBD-II scanner.
3
Listen for the noise at different speeds and under various driving conditions to determine if it is consistent.
4
Test the electric motor for operational efficiency and unusual heat levels.
5
Inspect wheel bearings and tires for any signs of wear or damage that could contribute to noise.

Solution

1. Preparation

Ensure the vehicle is in a safe, well-ventilated area.
Disconnect the high-voltage battery as a safety precaution.
Gather necessary tools and parts.

2. Inspect and Tighten Drivetrain Components

Sub-steps:
- Check all bolts and fasteners in the drivetrain for proper torque specification (consult repair manual for exact values).
- Tighten any loose components, such as motor mounts or transmission bolts.

3. Inspect Electric Motor and Gearbox

Sub-steps:
- Remove the access cover to the electric motor.
- Check the motor bearings for signs of wear or damage.
- Inspect the gearbox for proper lubrication and any metal shavings that may indicate internal wear.
- Replace any worn bearings or lubricate as necessary.

4. Wheel Bearing and Tire Inspection

Sub-steps:
- Jack up the vehicle and spin each wheel to check for roughness or play in the wheel bearings.
- Inspect tires for uneven wear patterns and replace if necessary.

5. Reconnect Battery and Perform Test Drive

Sub-steps:
- Reconnect the high-voltage battery.
- Start the vehicle and perform a test drive to check for the resolution of the whining noise.