my Tesla Model S Original (2012-2020) has an unusual smell after driving

Tesla Model S Plaid/Refresh (2021-present)

Error Codes

2-4 hours

Time

medium

Difficulty

high

Severity

3 min read

460 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 unusual smells after driving your 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 battery before working on electrical systems.
•Allow the vehicle to cool before inspecting the battery area.

Symptoms

•Unusual burning or chemical smell
•Increased heat from the battery or motor area
•Warning messages on the dashboard
•Reduced performance or power delivery
•Visible smoke or steam from the vehicle

Diagnostic Steps

1
Inspect the battery area for any signs of overheating or damage.
2
Check for any visible leaks or fluid pooling under the vehicle.
3
Scan the vehicle's system for error codes using a compatible OBD-II scanner.
4
Examine wiring and connectors in the drivetrain for frayed or burnt insulation.
5
Test the battery temperature using a thermal imaging camera or infrared thermometer.

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
•Thermal imaging camera
•Gloves
•Safety glasses

Parts Required

•OEM wiring or connectors
•Battery coolant

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Diagnostic Steps

1
Inspect the battery area for any signs of overheating or damage.
2
Check for any visible leaks or fluid pooling under the vehicle.
3
Scan the vehicle's system for error codes using a compatible OBD-II scanner.
4
Examine wiring and connectors in the drivetrain for frayed or burnt insulation.
5
Test the battery temperature using a thermal imaging camera or infrared thermometer.

Solution

1. Preparation

Tools Required: OBD-II scanner, thermal imaging camera, gloves, safety glasses.
Disconnect the vehicle from any charging source and ensure it is powered off.
Allow the vehicle to cool down before beginning inspection.

2. Inspect the Battery and Drivetrain

Sub-steps:
1. Remove the rear trunk panel to access the battery compartment.
2. Visually inspect the battery for any signs of damage, such as swelling or discoloration.
3. Check the battery connections to ensure they are secure and free from corrosion.
4. Use the thermal imaging camera to check for hot spots on the battery and motor.

3. Check Wiring and Components

Sub-steps:
1. Inspect all visible wiring harnesses for signs of wear, fraying, or melting.
2. Check connectors for any burnt smell or discoloration.
3. Replace any damaged wiring or connectors with OEM parts.

4. Addressing Odor Source

Sub-steps:
1. If the odor persists after inspection, consider replacing the battery coolant if it is old or contaminated.
2. Clean any debris or contaminants from around the battery and motor areas.
3. Reassemble any removed panels and securely fasten.