my Tesla Model S Original (2012-2020) has a burning smell what's going on

Tesla Model S Plaid/Refresh (2021-present)

Error Codes

2-4 hours

Time

medium

Difficulty

high

Severity

3 min read

519 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 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 vehicle's battery before working on electrical systems.
•Allow the vehicle to cool down before inspecting components to avoid burns.

Symptoms

•Burning smell inside or outside the vehicle
•Possible smoke emanating from under the hood
•Warning lights illuminated on the dashboard
•Reduced power or performance
•Unusual noises from the motor or electrical components

Diagnostic Steps

1
Inspect the vehicle for visible smoke or signs of burning components.
2
Check the battery status using the vehicle's interface for any alerts or warnings.
3
Use an OBD-II scanner to retrieve any error codes related to electrical or battery faults.
4
Visually inspect the wiring harness and connectors for signs of damage or overheating.
5
Examine the motor and inverter for any signs of overheating or damage.
6
Check fluid levels, especially coolant, to ensure proper cooling of the electric components.

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
•Socket set
•Screwdriver set
•Heat-shrink tubing

Parts Required

•Replacement wiring (if damaged)
•Electrical connectors (if necessary)

Related Faults

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Diagnostic Steps

1
Inspect the vehicle for visible smoke or signs of burning components.
2
Check the battery status using the vehicle's interface for any alerts or warnings.
3
Use an OBD-II scanner to retrieve any error codes related to electrical or battery faults.
4
Visually inspect the wiring harness and connectors for signs of damage or overheating.
5
Examine the motor and inverter for any signs of overheating or damage.
6
Check fluid levels, especially coolant, to ensure proper cooling of the electric components.

Solution

1. Preparation

Park the vehicle in a well-ventilated area and ensure it is powered off.
Gather tools including a multimeter, OBD-II scanner, and inspection tools.
Wear safety gloves and goggles.

2. Inspect and Clear Wiring

Remove the Frunk Cover:
- Unscrew the fasteners securing the frunk cover.
- Gently lift and remove the cover to expose the wiring and electrical components.
Inspect Wiring:
- Examine the wiring harness for any signs of melting, fraying, or discoloration.
- Use a multimeter to check for continuity and shorts in the wiring.
Repair or Replace Damaged Wires:
- If damaged wires are found, cut and splice in new wiring using heat-shrink tubing for insulation.
- Secure connections with electrical tape.

3. Check Battery and Electrical Components

Battery Inspection:
- Inspect the battery pack for any signs of swelling or damage.
- Check the battery cooling system for blockages or leaks.
Test Components:
- Use a multimeter to check voltage and resistance on critical components like the inverter and motor.
- Replace any components that are outside manufacturer-recommended specifications.

4. Reassemble and Test

Reassemble Frunk:
- Carefully replace the frunk cover and secure it with the fasteners.
Test Drive:
- Conduct a short test drive under varying conditions to monitor for any recurring smells or warning lights.
Monitor Performance:
- Keep an eye on the battery temperature and system alerts during the test.