why does my Tesla Model S Original (2012-2020) make a grinding noise when accelerating

Tesla Model S Plaid/Refresh (2021-present)

Error Codes

2-4 hours

Time

medium

Difficulty

high

Severity

3 min read

429 words

⚠️ Safety Warning

This issue requires immediate attention. If you are not experienced with automotive repairs, consult a professional mechanic. Working on critical systems can be dangerous.

Problem Statement

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

Affected Component

Drivetrain

Estimated Time

2-4 hours

⚠️ Safety Warnings

Important safety information - read before proceeding

•Always wear safety glasses and gloves when working on vehicles.
•Ensure the vehicle is securely supported on jack stands before working underneath it.
•Disconnect the battery before accessing electrical components.

Symptoms

•Grinding noise during acceleration
•Vibrations felt through the floor or steering wheel
•Decreased acceleration performance
•Unusual smells (e.g., burning rubber or metal)
•Possible warning lights on the dashboard

Diagnostic Steps

1
Inspect the tires for uneven wear or damage that could cause noise during acceleration.
2
Check the wheel bearings for play or roughness by spinning the wheels and listening for noise.
3
Scan the vehicle's computer for any error codes that may indicate issues with the electric motor or drivetrain.
4
Inspect the drive unit and associated components for signs of wear, damage, or loose connections.
5
Test drive the vehicle to replicate the conditions under which the noise occurs and pinpoint its 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

•Jack and jack stands
•Socket set
•Torque wrench
•OBD-II scanner
•Tire pressure gauge

Parts Required

•Wheel bearing (if found defective)
•Drive unit components (if wear is detected)

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Diagnostic Steps

1
Inspect the tires for uneven wear or damage that could cause noise during acceleration.
2
Check the wheel bearings for play or roughness by spinning the wheels and listening for noise.
3
Scan the vehicle's computer for any error codes that may indicate issues with the electric motor or drivetrain.
4
Inspect the drive unit and associated components for signs of wear, damage, or loose connections.
5
Test drive the vehicle to replicate the conditions under which the noise occurs and pinpoint its source.

Solution

1. Preparation

Gather necessary tools and parts.
Ensure the vehicle is on a flat surface and securely parked.
Disconnect the 12V battery to prevent any electrical issues during inspection.

2. Inspect Tires

Sub-steps:
- Visually inspect all tires for any signs of damage or uneven wear.
- Check tire pressure and adjust if necessary.
- Rotate tires if uneven wear is detected.

3. Check Wheel Bearings

Sub-steps:
- Lift the vehicle using a jack and secure it with jack stands.
- Spin each wheel by hand and listen for grinding noises.
- Wiggle the wheel back and forth to check for play in the bearings; replace if necessary.

4. Inspect Drive Unit

Sub-steps:
- Remove the cover from the drive unit (if applicable).
- Check for any visible signs of wear, such as metal shavings or oil leaks.
- Tighten any loose bolts or connections.
- If wear is excessive, consider replacing the drive unit or components as necessary.

5. Test Drive

Sub-steps:
- Reconnect the battery.
- Conduct a test drive to check if the grinding noise persists.
- Monitor for any changes in performance or additional noises.

Tools Required:

Jack and jack stands
Socket set
Torque wrench
OBD-II scanner
Tire pressure gauge

Parts Required:

Wheel bearing (if found defective)
Drive unit components (if wear is detected)

Estimated Repair Time: 2-4 hours

Safety Warnings:

Always wear safety glasses and gloves when working on vehicles.
Ensure the vehicle is securely supported on jack stands before working underneath it.
Disconnect the battery before accessing electrical components.