my Tesla Model S Original (2012-2020) has a burning smell when charging what should I do

Tesla Model S Plaid/Refresh (2021-present)

Error Codes

1-2 hours

Time

medium

Difficulty

high

Severity

3 min read

547 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 the burning smell when charging your Tesla Model S (2012-2020). Step-by-step guide with diagnostic procedures and repair instructions.

Affected Component

Electrical

Estimated Time

1-2 hours

⚠️ Safety Warnings

Important safety information - read before proceeding

•Ensure the charger is unplugged before inspection to avoid electric shock.
•Avoid using water or excessive liquids that could damage electrical components.
•Ensure the outlet is safe to handle; consult an electrician if necessary.
•Disconnect the battery if required to access internal components.

Symptoms

•Burning smell from the charging area
•Unusual heat at the charging port
•Charging process interrupted or slowed
•Warning messages on the vehicle display
•Increased noise from the charging equipment

Diagnostic Steps

1
Inspect the charging cable and connector for damage or signs of overheating.
2
Check the charging port on the vehicle for debris, damage, or corrosion.
3
Use a multimeter to test the voltage and continuity of the charging cable.
4
Verify the electrical outlet or charging station for proper voltage and signs of wear.
5
Review the vehicle's onboard diagnostics for any error codes related to charging.

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
•Soft cloth
•Dielectric grease
•Socket set

Parts Required

•Replacement charging cable (if damaged)
•Replacement charging port (if damaged)

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Diagnostic Steps

1
Inspect the charging cable and connector for damage or signs of overheating.
2
Check the charging port on the vehicle for debris, damage, or corrosion.
3
Use a multimeter to test the voltage and continuity of the charging cable.
4
Verify the electrical outlet or charging station for proper voltage and signs of wear.
5
Review the vehicle's onboard diagnostics for any error codes related to charging.

Solution

1. Preparation

Gather tools: Multimeter, cleaning supplies, dielectric grease, and any replacement parts if necessary.
Ensure the vehicle is parked in a well-ventilated area and powered down.
Disconnect the charger from both the vehicle and the power source.

2. Inspect the Charging Cable

Sub-steps:
- Examine the entire length of the charging cable for frays, cuts, or melted sections.
- Check the connectors at both ends for pitting or discoloration.
Tools Required: Visual inspection; use a multimeter for continuity testing.
Safety Warnings: Ensure the charger is unplugged before inspection to avoid electric shock.

3. Clean the Charging Port

Sub-steps:
- Use a soft cloth to clean the charging port on the vehicle.
- Inspect for any foreign objects or corrosion; remove if present.
- Apply dielectric grease to the port to protect against moisture.
Tools Required: Soft cloth, dielectric grease.
Safety Warnings: Avoid using water or excessive liquids that could damage electrical components.

4. Test Electrical Components

Sub-steps:
- Use a multimeter to check the voltage output from the charging station to ensure it matches specifications (typically around 240V for Level 2 charging).
- Inspect the outlet for signs of wear or overheating.
Tools Required: Multimeter.
Safety Warnings: Ensure the outlet is safe to handle; consult an electrician if necessary.

5. Replace Damaged Components

Sub-steps:
- If any damage is found in the charging cable, replace it with a compatible OEM part.
- If the charging port is damaged, schedule a service appointment with Tesla for replacement.
Tools Required: Socket set if disassembly is needed for replacement.
Safety Warnings: Disconnect the battery if required to access internal components.