my Tesla Model S Original (2012-2020) has a strange engine noise

Tesla Model S Plaid/Refresh (2021-present)

Error Codes

1-3 hours

Time

medium

Difficulty

medium

Severity

3 min read

474 words

Problem Statement

Learn how to diagnose and fix strange engine noise in Tesla Model S (2012-2020). Step-by-step guide with symptoms, diagnostic steps, and repair instructions.

Affected Component

Electrical

Estimated Time

1-3 hours

⚠️ Safety Warnings

Important safety information - read before proceeding

•Disconnect the 12V battery before working on electrical systems.
•Ensure the vehicle is secure and stable before performing any inspections or repairs.

Symptoms

•Unusual whining or grinding noise during acceleration
•Noise persists while driving at various speeds
•Intermittent noise that changes with vehicle speed
•No warning lights illuminated on the dashboard
•Decreased acceleration performance

Diagnostic Steps

1
Inspect the vehicle for any visible signs of damage or loose components in the motor area.
2
Use a diagnostic tool to scan for any error codes related to the powertrain or motor systems.
3
Listen for the noise while stationary and while in motion to determine if it changes with vehicle speed.
4
Check the condition and tightness of the drive unit mounting bolts.
5
Verify the condition of the electric motor coolant and ensure it’s at the proper level.

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
•Diagnostic tool (OBD-II scanner)
•Coolant refill bottle

Parts Required

•Tesla-approved electric motor coolant
•Replacement mounting bolts

Related Faults

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Diagnostic Steps

1
Inspect the vehicle for any visible signs of damage or loose components in the motor area.
2
Use a diagnostic tool to scan for any error codes related to the powertrain or motor systems.
3
Listen for the noise while stationary and while in motion to determine if it changes with vehicle speed.
4
Check the condition and tightness of the drive unit mounting bolts.
5
Verify the condition of the electric motor coolant and ensure it’s at the proper level.

Solution

1. Preparation

Gather necessary tools and parts.
Ensure the vehicle is parked on a flat surface and secured with wheel chocks.
Disconnect the 12V battery for safety.

2. Inspect Motor Mounts

Locate the electric motor mounting points.
Use a socket set to check the torque of the mounting bolts according to manufacturer's specifications (usually around 25-30 Nm).
Tighten any loose bolts to the specified torque.

3. Inspect Drive Unit

Remove the protective cover over the drive unit if applicable.
Check for any signs of physical damage or wear on the motor itself.
Ensure that all electrical connections are secure and free from corrosion.

4. Fluid Check

Inspect the electric motor coolant reservoir for the correct fluid level.
If low, refill with Tesla-approved coolant to the appropriate level.
Check for any leaks in the cooling system.

5. Reassemble and Test

Reattach any covers that were removed during inspection.
Reconnect the 12V battery.
Start the vehicle and listen for the noise again during a short test drive.