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

Tesla Model S Plaid/Refresh (2021-present)

Error Codes

2-4 hours

Time

medium

Difficulty

high

Severity

3 min read

499 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 12V battery before working on electrical systems.
•Allow the vehicle to cool down before inspecting the battery or brake components.

Symptoms

•Strong burning smell, noticeable inside and outside the vehicle
•Possible overheating warning on the dashboard
•Smoke or steam observed from under the hood or near the wheels
•Reduced performance or power during driving
•Unusual noises from the motor or drivetrain

Diagnostic Steps

1
Inspect for visible smoke or steam under the hood and around the wheels.
2
Check the vehicle's logs using the Tesla app for any error messages or alerts.
3
Examine the battery pack and associated wiring for signs of overheating or damage.
4
Inspect the brake components for signs of excessive wear or overheating.
5
Use a multimeter to check for electrical shorts in wiring harnesses.
6
Verify fluid levels (coolant and brake fluid) for any discrepancies.

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
•Socket set
•Screwdrivers
•Torque wrench
•Flashlight

Parts Required

•Replacement wiring (if damaged)
•Brake pads/rotors (if worn)
•Battery pack (if damaged)

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Diagnostic Steps

1
Inspect for visible smoke or steam under the hood and around the wheels.
2
Check the vehicle's logs using the Tesla app for any error messages or alerts.
3
Examine the battery pack and associated wiring for signs of overheating or damage.
4
Inspect the brake components for signs of excessive wear or overheating.
5
Use a multimeter to check for electrical shorts in wiring harnesses.
6
Verify fluid levels (coolant and brake fluid) for any discrepancies.

Solution

1. Preparation

Ensure the vehicle is parked on a flat surface and powered off.
Wear safety gloves and goggles.
Disconnect the 12V battery to prevent electrical shock.

2. Inspect and Address Electrical Issues

Step 1: Check wiring harnesses for insulation damage.
- Use a flashlight to inspect wiring for burn marks or melting.
Step 2: Repair or replace damaged wiring.
- Use appropriate gauge wire and connectors to make repairs.
Step 3: Reconnect the battery once repairs are complete.

3. Address Overheating Components

Step 1: Inspect the battery pack.
- Remove the access cover and check for signs of overheating or swelling.
Step 2: If damage is found, replace the battery pack as necessary.
- Follow Tesla's guidelines for battery replacement; ensure proper disposal of the old battery.
Step 3: Check the thermal management system for leaks.
- Inspect hoses and connections for coolant leaks; replace any compromised parts.

4. Inspect Brake Components

Step 1: Check brake pads and rotors for wear.
- Replace worn brake pads or rotors as needed.
Step 2: Inspect the brake fluid reservoir.
- Top off or replace fluid if levels are low, ensuring it's the correct type.