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

Tesla Model S Plaid/Refresh (2021-present)

Error Codes

2-4 hours

Time

medium

Difficulty

medium

Severity

3 min read

566 words

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

•Ensure the vehicle is on a level surface and secured with wheel chocks before lifting
•Disconnect the battery before working on electrical systems

Symptoms

•Grinding noise when accelerating
•Vibration felt in the steering wheel or cabin
•Unusual smells (burning or metallic)
•Decreased acceleration performance
•Warning lights illuminated on the dashboard (e.g., battery or powertrain warning)

Diagnostic Steps

1
Scan for error codes using OBD-II scanner
2
Inspect the drivetrain for signs of wear or damage
3
Examine all accessible components for looseness or improper installation
4
Perform a test drive to replicate the noise while observing any changes in vehicle performance
5
Check wheel bearings for signs of wear or damage
6
Inspect brake pads and rotors for wear

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
•Jack and jack stands
•Torque wrench
•Socket set
•Safety glasses
•Gloves

Parts Required

•Motor mounts (if damaged)
•Wheel bearings (if worn)
•Brake pads and rotors (if worn)

Related Faults

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Diagnostic Steps

1
Scan for error codes using OBD-II scanner
2
Inspect the drivetrain for signs of wear or damage
3
Examine all accessible components for looseness or improper installation
4
Perform a test drive to replicate the noise while observing any changes in vehicle performance
5
Check wheel bearings for signs of wear or damage
6
Inspect brake pads and rotors for wear

Solution

1. Preparation

Tools Required: OBD-II scanner, jack and jack stands, torque wrench, socket set, safety glasses, gloves.
Safety Warnings: Ensure the vehicle is on a level surface and secured with wheel chocks before lifting. Disconnect the battery before working on electrical systems.

2. Inspect and Tighten Drivetrain Components

Sub-steps:
1. Use a jack to lift the vehicle and secure it on jack stands.
2. Remove the underbody covers if necessary to access the drivetrain.
3. Inspect the motor mounts for cracks or excessive wear; replace if required.
4. Check the drive shafts for any signs of damage or looseness and tighten any loose bolts to manufacturer specifications.
5. Inspect the differential for leaks or damage; replace fluids as needed.

3. Wheel Bearing Inspection and Replacement

Sub-steps:
1. Remove the wheel from the affected side.
2. Check the wheel bearings for play by rocking the wheel back and forth.
3. If play is detected, remove the hub assembly and replace the bearings.
4. Reassemble and torque all nuts and bolts to the manufacturer's specifications.

4. Brake System Inspection and Replacement

Sub-steps:
1. Inspect brake pads for wear; replace if thickness is below the minimum specification.
2. Check rotors for scoring or warping; replace if damaged.
3. Clean the brake components and reassemble, ensuring proper torque specifications are followed.