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

530 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 12V battery before working on electrical systems.
•Allow the vehicle to cool before inspecting the electric motor or drivetrain.

Symptoms

•Whining noise that increases with acceleration
•Possible loss of power during acceleration
•No warning lights illuminated on the dashboard
•High-pitched sound when in motion
•Noise persists at various speeds

Diagnostic Steps

1
Inspect the electric motor and drivetrain components for any visible wear or damage.
2
Use a diagnostic tool to check for any error codes related to the powertrain.
3
Test the inverter and motor for proper operation using a multimeter.
4
Check the transmission fluid levels if applicable, ensuring they are within the recommended range.
5
Listen for the noise while stationary and in gear to distinguish if it's drivetrain-related or from a different 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

•Diagnostic tool (OBD-II scanner)
•Multimeter
•Socket set
•Torque wrench
•Fluid transfer pump (if changing transmission fluid)

Parts Required

•Motor bearings (if worn)
•Transmission fluid (if low or contaminated)

Related Faults

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Diagnostic Steps

1
Inspect the electric motor and drivetrain components for any visible wear or damage.
2
Use a diagnostic tool to check for any error codes related to the powertrain.
3
Test the inverter and motor for proper operation using a multimeter.
4
Check the transmission fluid levels if applicable, ensuring they are within the recommended range.
5
Listen for the noise while stationary and in gear to distinguish if it's drivetrain-related or from a different source.

Solution

1. Preparation

Gather tools and parts needed for the repair.
Ensure the vehicle is parked on a level surface and engage the parking brake.

2. Inspect and Secure Drivetrain Components

Sub-steps:
- Lift the vehicle using a jack and secure it with jack stands.
- Inspect the motor mounts and transmission mounts for any signs of wear or damage.
- Tighten any loose bolts associated with the electric motor and drivetrain.

3. Address Electric Motor or Inverter Issues

Sub-steps:
- Disconnect the vehicle's 12V battery to ensure safety when working on electrical components.
- Remove the cover from the electric motor and inspect for any signs of wear or foreign objects.
- If necessary, replace the motor bearings or any worn parts.
- Reconnect the inverter wiring and ensure all connections are secure.

4. Transmission Fluid Check and Replacement (if needed)

Sub-steps:
- Locate the transmission fluid fill plug and remove it.
- Use a transmission fluid dipstick to check the fluid level. If low, add the manufacturer-recommended fluid.
- If the fluid appears discolored or contaminated, drain and replace it with fresh transmission fluid, ensuring to follow the correct procedure for fluid replacement.

5. Reassemble and Test

Sub-steps:
- Reinstall any covers removed during inspection.
- Reconnect the 12V battery.
- Lower the vehicle and perform a test drive to check if the whining noise persists.