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

Tesla Model S Plaid/Refresh (2021-present)

Error Codes

2-4 hours

Time

medium

Difficulty

high

Severity

3 min read

529 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 your Tesla Model S (2012-2020). Step-by-step guide with symptoms, diagnostic steps, 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 before inspecting components to avoid burns.

Symptoms

•Burning smell noticeable inside or outside the vehicle
•Electrical components malfunctioning (e.g., lights flickering)
•Overheating indicators on the dashboard
•Smoke visible from under the hood or near the wheels
•Reduced performance (e.g., loss of power or acceleration)

Diagnostic Steps

1
Inspect the vehicle visually for any signs of smoke or burning components.
2
Check the cabin air filter and HVAC system for burnt debris or overheating.
3
Use an OBD-II scanner to check for any error codes related to electrical systems or overheating.
4
Inspect the battery pack for any signs of damage or overheating.
5
Examine the wiring harness and connectors for fraying or exposed wires.
6
Check for any fluid leaks that could be causing a burning smell (e.g., oil, coolant).

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
•Screwdriver
•Torque wrench
•Fluid catch pan

Parts Required

•Cabin air filter
•Electrical connectors (if damaged)
•Seals or gaskets (if leaks are found)

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Diagnostic Steps

1
Inspect the vehicle visually for any signs of smoke or burning components.
2
Check the cabin air filter and HVAC system for burnt debris or overheating.
3
Use an OBD-II scanner to check for any error codes related to electrical systems or overheating.
4
Inspect the battery pack for any signs of damage or overheating.
5
Examine the wiring harness and connectors for fraying or exposed wires.
6
Check for any fluid leaks that could be causing a burning smell (e.g., oil, coolant).

Solution

1. Preparation

Gather necessary tools and parts.
Ensure the vehicle is parked on a flat surface and the parking brake is engaged.
Disconnect the 12V battery to prevent any electrical issues during inspection and repair.

2. Inspect Electrical Components

Sub-steps:
- Remove the front trunk cover to access the wiring harness and battery area.
- Visually inspect all wiring for signs of melting or damage.
- Check connectors for corrosion or overheating.
Tools Required: Socket set, multimeter.

3. Check and Replace Cabin Air Filter

Sub-steps:
- Locate the cabin air filter access panel (usually behind the glove compartment).
- Remove the old filter and inspect for burnt debris or odors.
- Install a new filter if necessary.
Tools Required: Screwdriver.

4. Inspect Battery Pack

Sub-steps:
- Remove the battery pack cover (if safe to do so) to inspect for visible issues.
- Check for any thermal indicators or signs of damage.
- If damage is found, consult Tesla service for potential battery replacement.
Tools Required: Torque wrench.

5. Check for Fluid Leaks

Sub-steps:
- Inspect the ground where the vehicle is parked for fluid spots.
- Investigate under the hood and around the wheels for any leaks.
- Clean any leaks and replace seals or gaskets as needed.
Tools Required: Fluid catch pan, rags.