why is my Tesla Model S Original (2012-2020) making a whirring sound

Tesla Model S Plaid/Refresh (2021-present)

Error Codes

2-4 hours

Time

medium

Difficulty

medium

Severity

3 min read

538 words

Problem Statement

Learn how to diagnose and fix the whirring sound 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 12V battery before working on electrical systems.
•Ensure the vehicle is in Park and on a flat surface.
•Allow the vehicle to cool before inspecting any components.

Symptoms

•Whirring or buzzing sound when the vehicle is in operation
•Noise may increase with acceleration or deceleration
•Possible loss of power or inconsistent power delivery
•Check battery or drivetrain warning light may illuminate
•Unusual vibrations felt through the vehicle

Diagnostic Steps

1
Inspect for any error messages on the vehicle's display or use a diagnostic tool to scan for fault codes.
2
Check the battery state of charge and ensure it is within the normal operating range.
3
Visually inspect the electric motor and drivetrain components for any signs of wear, damage, or loose connections.
4
Test the electric motor’s resistance using a multimeter to ensure it is within specifications.
5
Inspect the wheel bearings and drivetrain components for unusual wear or damage that could cause noise.
6
Verify the operation of the cooling system for the battery and electric motor.

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
•Multimeter
•Basic hand tools (sockets, wrenches)

Parts Required

•Replacement motor mounts (if worn)
•Replacement wiring harness (if damaged)

Related Faults

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Diagnostic Steps

1
Inspect for any error messages on the vehicle's display or use a diagnostic tool to scan for fault codes.
2
Check the battery state of charge and ensure it is within the normal operating range.
3
Visually inspect the electric motor and drivetrain components for any signs of wear, damage, or loose connections.
4
Test the electric motor’s resistance using a multimeter to ensure it is within specifications.
5
Inspect the wheel bearings and drivetrain components for unusual wear or damage that could cause noise.
6
Verify the operation of the cooling system for the battery and electric motor.

Solution

1. Preparation

Tools Required: OBD-II scanner, multimeter, basic hand tools (sockets, wrenches).
Safety Warnings: Disconnect the 12V battery before working on electrical systems. Ensure the vehicle is in Park and on a flat surface.

2. Inspect Electric Motor

Remove the rear underbody panel to access the electric motor.
Check for any loose connections or damaged wiring harnesses.
Inspect the motor mounts for signs of wear or damage.
If noise persists, proceed to test the electric motor's resistance:
- Disconnect the motor connectors.
- Use a multimeter to measure resistance across the terminals. Refer to service manual for acceptable values.

3. Check Drivetrain Components

Inspect the drivetrain for any unusual wear.
Examine the driveshaft and CV joints for play or damage.
Rotate the wheels by hand to listen for abnormal noises that could indicate bearing issues.

4. Inspect Cooling System

Verify that the cooling system is functioning properly.
Check coolant levels and look for leaks in the cooling system surrounding the motor and battery.
If the cooling fans are not operating correctly, check for any obstructions or faulty fan controls.

5. Reassemble and Test

Reattach any panels removed during inspection.
Reconnect the battery.
Perform a test drive to monitor for the whirring sound and ensure all systems are functioning normally.