my Tesla Model S Original (2012-2020) has a burning smell when I drive

Tesla Model S Plaid/Refresh (2021-present)

Error Codes

2-4 hours

Time

medium

Difficulty

high

Severity

3 min read

491 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 high-voltage battery before working on electrical systems.
•Allow the vehicle to cool down before inspecting brake components.

Symptoms

•Burning smell noticeable inside the cabin or outside the vehicle
•Possible increase in battery temperature on the display
•Electric motor or component warning lights illuminated on the dashboard
•Reduced performance or acceleration
•Unusual noises from the electric motor or drivetrain

Diagnostic Steps

1
Inspect the vehicle for any visible signs of electrical damage or burnt components.
2
Check the battery temperature readings through the vehicle’s onboard diagnostics.
3
Scan for error codes using an OBD-II scanner to identify any related faults.
4
Inspect the brake components for signs of overheating or wear.
5
Examine the wiring harness and connectors for any signs of corrosion or melting.

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

•OBD-II scanner
•Socket set
•Wire strippers and connectors
•Torque wrench

Parts Required

•Replacement wiring (if damaged)
•Brake pads (if worn)
•Brake rotors (if necessary)

Related Faults

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Diagnostic Steps

1
Inspect the vehicle for any visible signs of electrical damage or burnt components.
2
Check the battery temperature readings through the vehicle’s onboard diagnostics.
3
Scan for error codes using an OBD-II scanner to identify any related faults.
4
Inspect the brake components for signs of overheating or wear.
5
Examine the wiring harness and connectors for any signs of corrosion or melting.

Solution

1. Preparation

Gather necessary tools and parts.
Ensure the vehicle is parked in a safe and ventilated area.
Disconnect the high-voltage battery before starting repairs to avoid electric shock.

2. Inspect and Replace Damaged Components

Inspect wiring and connectors:
- Remove the frunk cover to access wiring.
- Visually inspect all wiring for burns or melting.
Replace damaged wiring:
- If any damaged wires are found, carefully cut out the damaged section.
- Use appropriate automotive-grade wire connectors to splice in new wire.
Reconnect all connectors securely.

3. Brake System Inspection

Remove wheel covers:
- Use a socket set to remove the lug nuts and take off the wheel.
Inspect brake components:
- Check brake pads, rotors, and calipers for signs of excessive wear or overheating.
- Replace worn brake pads and resurfacing or replacing rotors as necessary.
Reinstall the wheel and tighten lug nuts to manufacturer specifications.

4. Reconnect Battery and Test

Reconnect the high-voltage battery.
Start the vehicle and monitor for any abnormal smells or warning lights.
Conduct a short test drive to assess if the burning smell persists.