why is my Tesla Model S Original (2012-2020) making a grinding noise

Tesla Model S Plaid/Refresh (2021-present)

Error Codes

2-4 hours

Time

medium

Difficulty

high

Severity

3 min read

469 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 issues in Tesla Model S (2012-2020). Step-by-step guide with symptoms, diagnostic steps, and repair instructions.

Affected Component

Brakes

Estimated Time

2-4 hours

⚠️ Safety Warnings

Important safety information - read before proceeding

•Disconnect the 12V battery before working on electrical systems.
•Allow the vehicle to cool before working on the brake system to avoid burns.

Symptoms

•Grinding noise when accelerating or decelerating
•Noise persists when turning or cornering
•Unusual vibrations felt through the floor or steering wheel
•Decreased braking performance or responsiveness
•Warning lights illuminated on the dashboard, such as the brake or traction control lights

Diagnostic Steps

1
Inspect the brake system for wear or damage, including pads and rotors.
2
Check for any loose or damaged components in the drivetrain, such as CV joints or motor mounts.
3
Scan for error codes using an OBD-II scanner to identify any electronic issues.
4
Perform a visual inspection of the tires for uneven wear or damage.
5
Listen closely to the noise source while the vehicle is in motion to pinpoint the location.

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
•Jack and jack stands
•Brake cleaner

Parts Required

•Brake pads
•Brake rotors (if needed)
•CV joint assembly (if needed)
•Motor mounts (if needed)

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Diagnostic Steps

1
Inspect the brake system for wear or damage, including pads and rotors.
2
Check for any loose or damaged components in the drivetrain, such as CV joints or motor mounts.
3
Scan for error codes using an OBD-II scanner to identify any electronic issues.
4
Perform a visual inspection of the tires for uneven wear or damage.
5
Listen closely to the noise source while the vehicle is in motion to pinpoint the location.

Solution

1. Preparation

Gather necessary tools and parts.
Park the vehicle on a flat surface and engage the parking brake.
Disconnect the 12V battery to ensure safety.

2. Inspect and Replace Brake Components

Sub-steps:
1. Remove the wheel to gain access to the brake assembly.
2. Inspect brake pads for thickness; if less than 3mm, replace them.
3. Check brake rotors for scoring or wear; replace if necessary.
4. Reassemble the brake components and ensure all bolts are torqued to manufacturer specifications.

3. Inspect the Drivetrain

Sub-steps:
1. Check for play in the CV joints by manually wiggling the axle.
2. Examine motor mounts for cracks or excessive wear; replace if damaged.
3. If grinding is suspected from the motor, consult a qualified technician for further diagnosis.

4. Test Drive

Sub-steps:
1. Reconnect the battery and ensure all tools are removed from the engine bay.
2. Conduct a test drive to confirm the noise has been resolved.
3. Monitor for any unusual vibrations or sounds during the drive.