my Tesla Model S Original (2012-2020) has a strong burning smell, what could it be?

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 strong 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 components that may have overheated.

Symptoms

•Strong burning smell from the vehicle
•Possible overheating of components
•Warning lights illuminated on the dashboard
•Loss of power or reduced performance
•Smoke coming from under the hood or near the battery compartment

Diagnostic Steps

1
Inspect the vehicle's exterior and under the hood for visible signs of smoke or burning.
2
Use an OBD-II scanner to check for any error codes related to the battery or electrical system.
3
Check the battery temperature using the Tesla app or onboard diagnostics.
4
Visually inspect wiring harnesses and connectors for signs of damage or melting.
5
Assess the condition of the brake pads and rotors, as overheating can cause burning smells.

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
•Multimeter
•Flashlight
•Basic hand tools (sockets, wrenches)

Parts Required

•Replacement wiring (if damaged)
•Replacement connectors (if burnt)
•Potential battery replacement (if severely damaged)

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Diagnostic Steps

1
Inspect the vehicle's exterior and under the hood for visible signs of smoke or burning.
2
Use an OBD-II scanner to check for any error codes related to the battery or electrical system.
3
Check the battery temperature using the Tesla app or onboard diagnostics.
4
Visually inspect wiring harnesses and connectors for signs of damage or melting.
5
Assess the condition of the brake pads and rotors, as overheating can cause burning smells.

Solution

1. Preparation

Tools Required: OBD-II scanner, multimeter, flashlight, basic hand tools (sockets, wrenches).
Ensure the vehicle is parked on a flat surface and the ignition is turned off.
Disconnect the high-voltage battery by following Tesla's safety procedures.

2. Inspect Components

Sub-steps:
1. Open the front trunk and visually inspect for any signs of burnt wires or connectors.
2. Check the condition of the battery pack by examining for any swelling, leaks, or burnt areas.
3. Inspect brake components for excessive wear or overheating.
4. Look for any foreign objects or debris that may be causing interference or overheating.

3. Repair or Replace Damaged Parts

Sub-steps:
1. If any wiring is damaged, replace the affected sections with appropriate gauge wire.
2. For any burnt connectors, replace them using OEM parts to ensure compatibility.
3. If overheating components are found, replace the battery or any affected electrical parts.
4. Ensure all connections are tight and free of corrosion.

4. Reconnect Battery and Test

Sub-steps:
1. Reconnect the high-voltage battery following Tesla’s guidelines.
2. Clear any error codes using the OBD-II scanner.
3. Start the vehicle and monitor for any unusual smells or warning lights.