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

critical

Severity

3 min read

504 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 the causes and solutions for a burning smell in your Tesla Model S (2012-2020). Follow our diagnostic steps and repair instructions for safety.

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 to avoid shock.
•Allow the vehicle to cool down before inspecting the battery or brake components.

Symptoms

•Burning odor inside or outside the vehicle
•Smoke visible from under the hood or near the wheels
•Warning lights on the dashboard
•Reduced power or performance
•Unusual noises from the electric motors or battery pack

Diagnostic Steps

1
Inspect for visible smoke or burning components under the hood and around the battery pack.
2
Use an OBD-II scanner to check for any diagnostic trouble codes (DTCs).
3
Examine the battery pack for any signs of swelling or damage.
4
Check all electrical connections and wiring for signs of melting or shorts.
5
Inspect the brake system for overheated components, such as calipers or pads.
6
Monitor the coolant levels and inspect for any leaks in the cooling system.

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 or connectors (if damaged)
•Brake pads and calipers (if worn)
•Coolant (if low)

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Diagnostic Steps

1
Inspect for visible smoke or burning components under the hood and around the battery pack.
2
Use an OBD-II scanner to check for any diagnostic trouble codes (DTCs).
3
Examine the battery pack for any signs of swelling or damage.
4
Check all electrical connections and wiring for signs of melting or shorts.
5
Inspect the brake system for overheated components, such as calipers or pads.
6
Monitor the coolant levels and inspect for any leaks in the cooling system.

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 parking brake is engaged.
Disconnect the 12V battery to prevent electrical shock.

2. Inspect and Repair Electrical Components

Sub-steps:
1. Visually inspect all wiring harnesses and connectors for any signs of melting or damage.
2. Use a multimeter to check for continuity in suspect wires.
3. Repair or replace any damaged wiring or connectors.

3. Check and Address Battery Issues

Sub-steps:
1. Remove the battery cover (if accessible) and inspect for any signs of damage or swelling.
2. If damage is noted, consult Tesla service for battery replacement or repair.
3. Ensure all battery connections are secure and free from corrosion.

4. Brake System Inspection

Sub-steps:
1. Inspect brake pads for excessive wear or overheating.
2. Check brake calipers for proper operation and signs of sticking.
3. Replace any worn brake components and ensure proper lubrication.

5. Cooling System Inspection

Sub-steps:
1. Check coolant levels and top off with the recommended coolant type if low.
2. Inspect hoses for leaks or damage.
3. Replace any damaged hoses or components in the cooling system.