my Tesla Model S Original (2012-2020) has a high-pitched noise when accelerating

Tesla Model S Plaid/Refresh (2021-present)

Error Codes

3-5 hours

Time

medium

Difficulty

medium

Severity

3 min read

403 words

Problem Statement

Diagnose and fix high-pitched noise during acceleration in Tesla Model S (2012-2020). Step-by-step guide with diagnostic procedures and repair instructions.

Affected Component

Electrical

Estimated Time

3-5 hours

⚠️ Safety Warnings

Important safety information - read before proceeding

•Disconnect the high-voltage battery before working on electrical systems.
•Allow sufficient time for the electric motor to cool before inspection.

Symptoms

•High-pitched noise during acceleration
•Possible vibration felt through the cabin
•Decreased acceleration performance
•Unusual sounds when decelerating
•Potential warning messages on the dashboard

Diagnostic Steps

1
Inspect the electric motor for signs of wear or damage.
2
Check drivetrain components, including the drive unit and associated bearings.
3
Use an OBD-II scanner to check for any logged error codes.
4
Examine the suspension and chassis components for loose or damaged parts.
5
Listen carefully to isolate the noise location when accelerating and decelerating.

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
•Socket set
•Torque wrench
•Bearing puller and press

Parts Required

•Replacement bearings (if necessary)
•Electric motor components (if damaged)

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Diagnostic Steps

1
Inspect the electric motor for signs of wear or damage.
2
Check drivetrain components, including the drive unit and associated bearings.
3
Use an OBD-II scanner to check for any logged error codes.
4
Examine the suspension and chassis components for loose or damaged parts.
5
Listen carefully to isolate the noise location when accelerating and decelerating.

Solution

1. Preparation

Gather tools and parts required for the repair.
Park the vehicle on a flat surface and engage the parking brake.
Disconnect the high-voltage battery for safety.

2. Inspect Electric Motor

Remove the rear cover of the electric motor assembly.
Visually inspect for any signs of burning, fraying, or loose connections.
Use a multimeter to check the motor windings for shorts or open circuits.

3. Check Drivetrain Components

Remove the drive unit cover to access the internal components.
Inspect the bearings and gears for wear or damage.
Replace any damaged bearings using a bearing puller and press.

4. Reassemble and Test

Reassemble all components in reverse order.
Ensure all fasteners are torqued to manufacturer specifications.
Reconnect the high-voltage battery and perform a system check.