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

Tesla Model S Plaid/Refresh (2021-present)

Error Codes

2-4 hours

Time

medium

Difficulty

high

Severity

3 min read

514 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 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 vehicle's high-voltage battery before working on electrical systems.
•Allow components to cool before inspection.

Symptoms

•Burning smell emanating from the cabin or exterior of the vehicle
•Possible overheating warning on the dashboard
•Unusual noises coming from the electric motor or battery pack
•Reduced acceleration or power output
•Electrical components malfunctioning (e.g., lights dimming or flickering)

Diagnostic Steps

1
Inspect for visible signs of burning or melting in the engine compartment and undercarriage.
2
Check the battery temperature and status using the vehicle's diagnostic menu.
3
Use an OBD-II scanner to check for any error codes related to the electric motor or battery system.
4
Verify the condition of the high-voltage wiring for insulation damage or wear.
5
Examine the brake system, particularly for signs of overheating or worn brake 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
•Flashlight
•Safety glasses
•Gloves

Parts Required

•Replacement high-voltage wiring (if damaged)
•Brake pads (if worn)
•Brake calipers (if seized)
•Cooling system components (hoses, pumps)

Related Faults

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Diagnostic Steps

1
Inspect for visible signs of burning or melting in the engine compartment and undercarriage.
2
Check the battery temperature and status using the vehicle's diagnostic menu.
3
Use an OBD-II scanner to check for any error codes related to the electric motor or battery system.
4
Verify the condition of the high-voltage wiring for insulation damage or wear.
5
Examine the brake system, particularly for signs of overheating or worn brake components.

Solution

1. Preparation

Tools Required: OBD-II scanner, multimeter, socket set, flashlight, safety glasses, gloves
Safety Warnings: Disconnect the vehicle's high-voltage battery before working on electrical systems. Allow components to cool before inspection.

2. Inspect Battery and Wiring

Remove the rear trunk cover to access the battery pack.
Visually inspect wiring for any signs of fraying, corrosion, or melting.
Use a multimeter to check for short circuits or incorrect voltage levels in the battery system.
Repair or replace any damaged wiring or connectors as necessary.

3. Check Cooling Systems

Inspect the battery cooling system for leaks or blockages.
Ensure that the coolant levels are adequate and the coolant is clean.
Replace any damaged hoses or components in the cooling system.
If the cooling pump is malfunctioning, remove and replace it according to manufacturer specifications.

4. Brake System Inspection

Remove the wheels to access the brake components.
Inspect brake pads for excessive wear and replace if necessary.
Check brake calipers for proper operation and replace if they show signs of seizing.
Ensure brake fluid is at the correct level and replace if contaminated.