my Tesla Model S Original (2012-2020) has a loud noise when accelerating what’s wrong

Tesla Model S Plaid/Refresh (2021-present)

Error Codes

2-4 hours

Time

medium

Difficulty

high

Severity

3 min read

464 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

Diagnose and fix loud 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

•Disconnect the 12V battery before performing any repairs to electrical components.
•Allow the vehicle to cool down before working on the drive unit or related components.

Symptoms

•Loud noise during acceleration
•Possible vibrations felt through the chassis
•Decreased acceleration performance
•Unusual sounds when decelerating or coasting
•Possible warning lights on the dashboard

Diagnostic Steps

1
Inspect the tires for uneven wear or damage that could contribute to noise.
2
Check the motor mounts for wear or damage that could transmit noise into the cabin.
3
Scan the vehicle for any error codes related to the drivetrain or electric motor.
4
Examine the drive unit and associated components for signs of wear or damage.
5
Test drive the vehicle to replicate the noise and identify when it occurs (e.g., speed, load, etc.).

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

•Socket set
•Torque wrench
•OBD-II scanner

Parts Required

•Motor mounts (if replacement is necessary)
•Drive unit fluid (if needed)

Related Faults

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Diagnostic Steps

1
Inspect the tires for uneven wear or damage that could contribute to noise.
2
Check the motor mounts for wear or damage that could transmit noise into the cabin.
3
Scan the vehicle for any error codes related to the drivetrain or electric motor.
4
Examine the drive unit and associated components for signs of wear or damage.
5
Test drive the vehicle to replicate the noise and identify when it occurs (e.g., speed, load, etc.).

Solution

1. Preparation

Tools Required: Socket set, torque wrench, OBD-II scanner
Ensure the vehicle is parked on a flat surface and the parking brake is engaged.
Disconnect the 12V battery for safety.

2. Inspect and Replace Motor Mounts

Remove the undercarriage cover (if applicable):
- Use a socket set to remove screws or bolts securing the cover.
Inspect motor mounts:
- Check for cracks or excessive wear.
Replace motor mounts if necessary:
- Remove the bolts securing the mounts using a socket set.
- Install new motor mounts and torque to manufacturer specifications.

3. Examine Drive Unit

Access the drive unit:
- Remove any covers that may obstruct access to the drive unit.
Inspect the drive unit for noise:
- Rotate the drive unit by hand to check for grinding or roughness.
Check fluid levels (if applicable):
- Inspect the drive unit fluid for contamination or low levels, and replenish or replace if necessary.

4. Reassemble Components

Reinstall the undercarriage cover:
- Secure it with the previously removed screws or bolts.
Reconnect the battery and ensure all connections are secure.