why does my Tesla Model S Original (2012-2020) make a whirring noise when I start it

Tesla Model S Plaid/Refresh (2021-present)

Error Codes

2-4 hours

Time

medium

Difficulty

medium

Severity

3 min read

492 words

Problem Statement

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

Affected Component

Cooling System

Estimated Time

2-4 hours

⚠️ Safety Warnings

Important safety information - read before proceeding

•Disconnect the 12V battery before working on electrical systems to prevent shock or short-circuiting.

Symptoms

•Whirring noise when the vehicle is powered on
•Possible vibrations felt in the cabin
•No warning lights illuminated on the dashboard
•Reduced acceleration performance (if applicable)
•Noise persists for a few moments after starting

Diagnostic Steps

1
Inspect the vehicle's drive unit for any visible signs of damage or leaks.
2
Check the battery state of charge to ensure it is within acceptable limits.
3
Use Tesla's onboard diagnostics to check for any error codes related to the drive unit or auxiliary systems.
4
Verify the operation of the cooling system, including the coolant levels and pump functionality.
5
Listen for the whirring noise while monitoring the performance of the electric motor during a test drive.

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

•Multimeter
•OBD-II scanner
•Basic hand tools

Parts Required

•Replacement coolant pump
•Coolant

Related Faults

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Diagnostic Steps

1
Inspect the vehicle's drive unit for any visible signs of damage or leaks.
2
Check the battery state of charge to ensure it is within acceptable limits.
3
Use Tesla's onboard diagnostics to check for any error codes related to the drive unit or auxiliary systems.
4
Verify the operation of the cooling system, including the coolant levels and pump functionality.
5
Listen for the whirring noise while monitoring the performance of the electric motor during a test drive.

Solution

1. Preparation

Gather tools such as a multimeter, OBD-II scanner (if applicable), and basic hand tools.
Ensure the vehicle is in a safe environment, parked on a flat surface.
Disconnect the 12V battery for safety if working on electrical components.

2. Inspect Drive Unit

Remove any covers or panels obstructing access to the drive unit.
Visually inspect for loose connections, damaged wiring, or leaks around the drive unit.
Use a multimeter to check for electrical continuity in the motor connections.

3. Check and Replace Auxiliary Components

Inspect the cooling system components, including the coolant pump and hoses, for wear or leaks.
If the whirring noise is associated with the cooling pump, proceed to replace it:
- Disconnect electrical connectors and hoses from the pump.
- Remove the old pump and install the new one, ensuring all connections are secure.
- Refill the cooling system with manufacturer-recommended coolant if necessary.

4. Reconnect Battery and Test

Reconnect the 12V battery, ensuring all connections are tight.
Power on the vehicle and listen for any unusual noises during startup.
Conduct a short test drive to ensure the vehicle operates normally and the whirring noise has ceased.