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

424 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 to diagnose and fix burning smell issues in 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 battery before working on electrical systems.
•Allow the vehicle to cool down before inspecting brake components.

Symptoms

•Burning smell inside or outside the vehicle
•Reduced performance or acceleration
•Warning lights on the dashboard
•Smoke visible from the front or rear of the vehicle
•Unusual noises (grinding, squealing, etc.) during operation

Diagnostic Steps

1
Inspect the vehicle for visible smoke or burning components.
2
Check for error codes using an OBD-II scanner to identify any electrical issues.
3
Examine brake components for signs of wear or overheating.
4
Inspect high-voltage wiring and connections for damage or corrosion.
5
Verify the operation of the battery cooling system and check coolant levels.

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
•Torque wrench

Parts Required

•Brake pads (if worn)
•High-voltage wiring (if damaged)
•Battery coolant (Tesla-approved)

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Diagnostic Steps

1
Inspect the vehicle for visible smoke or burning components.
2
Check for error codes using an OBD-II scanner to identify any electrical issues.
3
Examine brake components for signs of wear or overheating.
4
Inspect high-voltage wiring and connections for damage or corrosion.
5
Verify the operation of the battery cooling system and check coolant levels.

Solution

1. Preparation

Tools Required: OBD-II scanner, multimeter, socket set, torque wrench.
Disconnect the vehicle's battery to prevent electrical shock.

2. Inspect and Repair Brake System

Sub-steps:
1. Remove the wheel using a socket set.
2. Inspect brake pads and rotors for excessive wear or damage.
3. If pads are worn, replace them with OEM parts.
4. Reassemble the wheel and torque lug nuts to manufacturer specifications.

3. Check High-Voltage Wiring

Sub-steps:
1. Lift the vehicle safely using jack stands.
2. Examine the high-voltage wiring for fraying or damage.
3. If any wiring is compromised, replace it with OEM wiring harnesses.
4. Ensure all connections are secure and insulated.

4. Test Battery Cooling System

Sub-steps:
1. Locate the coolant reservoir for the battery cooling system.
2. Check the coolant level; refill with Tesla-approved coolant if low.
3. Inspect the cooling fans for proper operation; replace if faulty.
4. Reconnect the battery.