why does my Tesla Model S Original (2012-2020) make 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

465 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 down before inspecting the electric motor or gearbox.

Symptoms

•Whining noise during acceleration
•Noise increases with vehicle speed
•No loss of power or performance observed
•Possible vibration felt through the cabin
•Lack of unusual warning lights on the dashboard

Diagnostic Steps

1
Inspect the electric motor and gearbox for any visible signs of damage or wear.
2
Check for any loose or damaged drive belt components.
3
Listen for the noise while stationary and in gear to determine if it is related to acceleration or the drivetrain.
4
Scan the vehicle's system for any stored error codes using an OBD-II scanner.
5
Test the electric motor's performance and check for abnormal resistance or overheating.

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
•Lubrication tools (grease gun, etc.)

Parts Required

•Lubricant for electric motor and gearbox

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Diagnostic Steps

1
Inspect the electric motor and gearbox for any visible signs of damage or wear.
2
Check for any loose or damaged drive belt components.
3
Listen for the noise while stationary and in gear to determine if it is related to acceleration or the drivetrain.
4
Scan the vehicle's system for any stored error codes using an OBD-II scanner.
5
Test the electric motor's performance and check for abnormal resistance or overheating.

Solution

1. Preparation

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

2. Inspect and Secure Components

Inspect Drive Components:
- Remove the frunk (front trunk) cover to access the electric motor.
- Check the electric motor mount and surrounding components for any signs of wear or damage.
Secure Loose Components:
- Tighten any loose bolts or brackets that may contribute to noise.

3. Lubricate Bearings (if applicable)

Access the Gearbox:
- If the noise is determined to be from the gearbox, remove the gearbox cover.
Apply Lubrication:
- Use an appropriate lubricant for the bearings and gears.
- Ensure excess lubricant does not contaminate any electrical components.

4. Reassemble and Reconnect

Reinstall Components:
- Reattach the gearbox cover and secure all bolts to manufacturer specifications (consult repair manual for torque settings).
Reconnect Battery:
- Reconnect the high-voltage battery before testing the vehicle.