my Tesla Model S Original (2012-2020) has a burning smell coming from the motor

Tesla Model S Plaid/Refresh (2021-present)

Error Codes

2-4 hours

Time

medium

Difficulty

high

Severity

3 min read

528 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 a burning smell from the motor in Tesla Model S (2012-2020). Step-by-step guide with diagnostic procedures and repair instructions.

Affected Component

Electrical

Estimated Time

2-4 hours

⚠️ Safety Warnings

Important safety information - read before proceeding

•Disconnect the battery before working on electrical systems
•Allow the motor to cool before attempting repairs

Symptoms

•Burning smell from the motor area
•Possible warning lights on the dashboard (e.g., motor or battery warning)
•Reduced power or acceleration
•Unusual noises from the motor (e.g., grinding or whining)
•Overheating of the motor or battery pack

Diagnostic Steps

1
Inspect for visible damage to the motor and surrounding components
2
Scan for error codes using an OBD-II scanner
3
Check motor temperature with a temperature gun
4
Inspect electrical connections for signs of corrosion or burning
5
Test battery health with a Tesla-compatible diagnostic tool

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

•Safety gloves
•Safety glasses
•OBD-II scanner
•Multimeter
•Temperature gun
•Socket set
•Electrical cleaner

Parts Required

•Replacement wiring (if damaged)
•Electrical connectors (if needed)

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Solution

1. Preparation

Tools Required: Safety gloves, safety glasses, OBD-II scanner, multimeter, and temperature gun.
Disconnect the vehicle from the charging station and ensure it is powered off. Allow the motor to cool down before proceeding.

2. Inspect and Repair Wiring

Sub-steps:
1. Remove the underbody shield to access the motor.
2. Check all wiring harnesses for burnt or damaged insulation.
3. Repair any damaged wiring by splicing in new wire and insulating it properly.
4. Reattach any connectors that are loose or show signs of wear.

3. Motor and Component Cleaning

Sub-steps:
1. Clean the motor and surrounding components using an appropriate electrical cleaner.
2. Ensure that there is no debris or foreign objects obstructing the motor.
3. Pay special attention to the cooling fans and vents to ensure they are free of dust and debris.

4. Reassemble and Test

Sub-steps:
1. Reattach the underbody shield securely.
2. Reconnect the battery and ensure all connections are tight.
3. Power on the vehicle and check for any warning lights.
4. Take the vehicle for a short drive to test the motor's performance and listen for unusual noises.