why does my Tesla Model S Original (2012-2020) have a burning smell while driving

Tesla Model S Plaid/Refresh (2021-present)

Error Codes

2-4 hours

Time

hard

Difficulty

high

Severity

3 min read

448 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 the burning smell issue 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 any electrical components to avoid shock.
•Allow the vehicle to cool before handling any components that may have overheated.

Symptoms

•Burning smell noticeable inside or outside the vehicle
•Possible overheating warning on the dashboard
•Reduced performance or power during acceleration
•Unusual noises from the electric motor or drivetrain
•Smoke visible from under the hood or near the wheels

Diagnostic Steps

1
Inspect the motor and battery compartment for visible signs of overheating or burnt components.
2
Use a diagnostic tool to check for any error codes related to the battery management system or motor performance.
3
Examine the brake components for signs of excessive wear or overheating.
4
Check fluid levels, especially coolant levels, to ensure proper thermal management.
5
Inspect the wiring harness and connectors for damage or signs of electrical shorts.

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

•Multimeter
•Socket set
•Torque wrench
•OBD-II scanner
•Screwdrivers

Parts Required

•Replacement motor (if necessary)
•Wiring harness or connectors (if damaged)
•Coolant (if levels were low)

Related Faults

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Diagnostic Steps

1
Inspect the motor and battery compartment for visible signs of overheating or burnt components.
2
Use a diagnostic tool to check for any error codes related to the battery management system or motor performance.
3
Examine the brake components for signs of excessive wear or overheating.
4
Check fluid levels, especially coolant levels, to ensure proper thermal management.
5
Inspect the wiring harness and connectors for damage or signs of electrical shorts.

Solution

1. Preparation

Gather necessary tools and parts.
Ensure the vehicle is on a flat surface and in "Park" mode.
Disconnect the 12V battery to prevent electrical shock.

2. Inspect and Remove Components

Sub-steps:
1. Open the front trunk and remove any covers to access the battery compartment and motor.
2. Use a multimeter to check the voltage and ground continuity of the wiring.
3. If overheating is indicated, remove the battery pack cover carefully, following the manufacturer’s guidelines.

3. Replace Faulty Components

Sub-steps:
1. Identify any burnt connectors or wiring, and replace as needed.
2. If the electric motor is found to be faulty, remove it by unbolting it from its mounts and disconnecting all associated wiring.
3. Install a new or refurbished motor, ensuring all connections are secure and properly insulated.

4. Reassemble and Reconnect

Sub-steps:
1. Reinstall the battery cover and any other components that were removed.
2. Reconnect the 12V battery and ensure all connections are tightened.
3. Close the front trunk and check for any tools or loose parts.

5. Final Check

Sub-steps:
1. Start the vehicle and monitor for any warning lights on the dashboard.
2. Allow the vehicle to run for a few minutes and check for any unusual smells or sounds.
3. Conduct a test drive to ensure everything is functioning correctly.

Tools Required:

Multimeter
Socket set
Torque wrench
OBD-II scanner
Screwdrivers

Parts Required:

Replacement motor (if necessary)
Wiring harness or connectors (if damaged)
Coolant (if levels were low)

Estimated Repair Time: 2-4 hours

Safety Warnings:

Disconnect the battery before working on any electrical components to avoid shock.
Allow the vehicle to cool before handling any components that may have overheated.