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

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 a burning smell 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 vehicle to cool down before inspecting the motor or battery components.

Symptoms

•Burning odor noticeable inside or outside the vehicle
•Warning lights on the dashboard (e.g., battery or motor warning)
•Overheating of the vehicle components
•Reduced performance or power during acceleration
•Unusual noises coming from the electric motor or battery area

Diagnostic Steps

1
Inspect for any visible smoke or signs of burning around the battery and motor areas.
2
Scan the vehicle's systems using a Tesla diagnostic tool for any error codes.
3
Check the battery management system (BMS) for signs of overheating or malfunction.
4
Inspect the wiring and connectors for any signs of damage or wear.
5
Test the electric motor for unusual resistance or noise during operation.
6
Confirm the cooling system is functioning properly and that coolant levels are adequate.

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
•Basic hand tools (screwdrivers, socket set)
•Wire crimpers
•Electrical tape
•Heat shrink tubing
•Coolant pressure tester

Parts Required

•New wiring or connectors (if damaged)
•Coolant (if levels are low)

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Diagnostic Steps

1
Inspect for any visible smoke or signs of burning around the battery and motor areas.
2
Scan the vehicle's systems using a Tesla diagnostic tool for any error codes.
3
Check the battery management system (BMS) for signs of overheating or malfunction.
4
Inspect the wiring and connectors for any signs of damage or wear.
5
Test the electric motor for unusual resistance or noise during operation.
6
Confirm the cooling system is functioning properly and that coolant levels are adequate.

Solution

1. Preparation

Gather necessary tools and parts.
Ensure the vehicle is in a safe, well-ventilated area.
Disconnect the vehicle from any charging source.

2. Inspect and Clean Components

Tools Required: Multimeter, basic hand tools (screwdrivers, socket set)
Steps:
1. Remove any covers or panels to access the battery and motor areas.
2. Visually inspect the battery pack and electric motor for signs of damage or burnt components.
3. Use a multimeter to check for shorts or irregular readings in electrical connections.

3. Address Wiring Issues

Tools Required: Wire crimpers, electrical tape, heat shrink tubing
Steps:
1. Replace any damaged wiring or connectors found during inspection.
2. Use heat shrink tubing and electrical tape to secure connections and prevent future wear.
3. Ensure all connections are tight and secure.

4. Cooling System Check

Tools Required: Coolant pressure tester
Steps:
1. Inspect the coolant reservoir and hoses for leaks or blockages.
2. Test the cooling system pressure to ensure it is within specifications.
3. Replace any faulty components, such as the coolant pump or thermostat.