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

Tesla Model S Plaid/Refresh (2021-present)

Error Codes

3-6 hours

Time

hard

Difficulty

high

Severity

3 min read

531 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 burning smell issues in Tesla Model S (2012-2020). Step-by-step guide with symptoms, diagnostic steps, and repair instructions.

Affected Component

Electrical

Estimated Time

3-6 hours

⚠️ Safety Warnings

Important safety information - read before proceeding

•Disconnect the high-voltage battery before working on electrical systems.
•Use caution when handling components due to the risk of electric shock.

Symptoms

•Burning smell inside or outside the vehicle
•Overheating of components (e.g., battery, motor)
•Warning lights illuminated on the dashboard
•Unusual sounds (e.g., grinding, whining) from the electric motor
•Reduced performance or power loss

Diagnostic Steps

1
Inspect the vehicle for any visible signs of smoke or burning.
2
Check the battery pack for any signs of damage or overheating.
3
Scan the vehicle's onboard diagnostics system for error codes using an OBD-II scanner specific to Tesla.
4
Examine the electric motor and associated wiring for any signs of wear or damage.
5
Inspect the cooling system and associated components for leaks or blockages.
6
Evaluate the condition of the brakes and brake system components for overheating.

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
•Multimeter
•Torque wrench

Parts Required

•Replacement battery pack (if damaged)
•Replacement electric motor (if damaged)
•Electrical connectors and wiring (if needed)

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Diagnostic Steps

1
Inspect the vehicle for any visible signs of smoke or burning.
2
Check the battery pack for any signs of damage or overheating.
3
Scan the vehicle's onboard diagnostics system for error codes using an OBD-II scanner specific to Tesla.
4
Examine the electric motor and associated wiring for any signs of wear or damage.
5
Inspect the cooling system and associated components for leaks or blockages.
6
Evaluate the condition of the brakes and brake system components for overheating.

Solution

1. Preparation

Ensure the vehicle is turned off and parked on a level surface.
Disconnect the high-voltage battery to prevent electrical shock.
Gather necessary tools and replacement parts.

2. Inspect and Clean Components

Battery Pack Inspection
- Remove the underbody panels using a socket set.
- Visually inspect the battery pack for any signs of damage or burns.
- Use a multimeter to check for any abnormal voltage readings.
Electric Motor and Wiring Check
- Disconnect the electric motor's wiring harness.
- Inspect the motor for any signs of wear, burning, or overheating.
- Check the wiring for frayed or damaged insulation.

3. Repair or Replace Damaged Components

If any components are damaged:
- Battery Pack Replacement
  - Refer to manufacturer guidelines for battery pack replacement.
  - Ensure proper handling of the high-voltage battery.
- Motor Replacement or Repair
  - If replacing, follow the manufacturer’s torque specifications for all bolts and connectors.
  - Reconnect wiring harness and ensure all connections are secure.

4. Reassemble and Test

Reinstall all underbody panels and ensure they are secure.
Reconnect the high-voltage battery and check all connections.
Reconnect the vehicle to power and monitor for any abnormal smells or sounds during a test drive.