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

Tesla Model S Plaid/Refresh (2021-present)

Error Codes

3-5 hours

Time

hard

Difficulty

high

Severity

3 min read

512 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

Discover how to diagnose and fix a burning smell in Tesla Model S (2012-2020). Step-by-step guide with symptoms, diagnostic steps, and repair instructions.

Affected Component

Electrical

Estimated Time

3-5 hours

⚠️ Safety Warnings

Important safety information - read before proceeding

•Disconnect the high-voltage battery before working on electrical systems
•Allow components to cool before inspecting or handling them to avoid burns

Symptoms

•Burning smell noticeable inside the cabin or near the vehicle
•Overheating warning on the dashboard
•Reduced performance or power loss
•Unusual sounds from the electric motor or components
•Smoke or visible signs of burning from under the hood

Diagnostic Steps

1
Inspect for visible damage under the hood
2
Monitor temperature of components using thermal camera or infrared thermometer
3
Scan for error codes using OBD-II scanner
4
Check coolant and other fluid levels
5
Inspect battery pack for swelling, corrosion, or leakage

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

•Wire cutters
•Wire strippers
•Soldering iron
•Heat-shrink tubing
•Socket set
•Torque wrench
•OBD-II scanner
•Thermal camera or infrared thermometer
•Battery analyzer

Parts Required

•Replacement wiring (if damaged)
•Heat-shrink tubing
•Possible replacement components (e.g., inverter, electric motor)

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Solution

1. Preparation

Gather necessary tools and parts.
Ensure the vehicle is parked on a flat surface and in "Park" mode.
Disconnect the high-voltage battery for safety.

2. Inspect and Address Wiring Issues

Sub-steps:
1. Remove the front trunk cover to access wiring.
2. Visually inspect all wiring for signs of burns or damage.
3. If damaged wiring is found, cut out the damaged section and splice in new wiring using appropriate connectors.
4. Insulate all connections with heat-shrink tubing and electrical tape.
Tools Required: Wire cutters, wire strippers, soldering iron, heat-shrink tubing.

3. Check and Replace Overheating Components

Sub-steps:
1. Identify components that are overheating (e.g., electric motor, inverter).
2. If any component is excessively hot, remove it according to manufacturer guidelines.
3. Inspect for wear and replace with OEM parts if necessary.
4. Reinstall the component and ensure all connections are secure.
Tools Required: Socket set, torque wrench.

4. Test Battery Health

Sub-steps:
1. Reconnect the high-voltage battery.
2. Use a battery analyzer tool to assess the health of the battery pack.
3. If battery health is compromised, consider replacing the battery or consulting Tesla service.
Tools Required: Battery analyzer.