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

Tesla Model S Plaid/Refresh (2021-present)

Error Codes

2-4 hours

Time

medium

Difficulty

high

Severity

3 min read

524 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 issue 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 12V battery before working on electrical systems.
•Allow the brakes to cool before inspection to avoid burns.

Symptoms

•Burning odor noticeable inside or outside the vehicle
•Warning lights on the dashboard (e.g., brake, battery)
•Reduced braking performance or spongy brake pedal
•Increased motor temperature readings
•Smoke or visible signs of burning from the wheels or under the hood

Diagnostic Steps

1
Inspect the brakes for signs of overheating or wear, including burnt brake pads or discs.
2
Perform a visual inspection of the electrical components, wiring, and connectors for any signs of melting or damage.
3
Use the vehicle's onboard diagnostics to check for any error codes related to the battery, motor, or braking system.
4
Monitor the temperature of the electric motor and battery pack using the Tesla service menu.
5
Check fluid levels, particularly brake fluid and coolant, to ensure they are at proper 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
•Socket set
•Torque wrench
•Brake pad spreader
•Multimeter

Parts Required

•Brake pads
•Brake rotors (if needed)
•Electrical connectors (if damaged)
•Coolant (if low)

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Diagnostic Steps

1
Inspect the brakes for signs of overheating or wear, including burnt brake pads or discs.
2
Perform a visual inspection of the electrical components, wiring, and connectors for any signs of melting or damage.
3
Use the vehicle's onboard diagnostics to check for any error codes related to the battery, motor, or braking system.
4
Monitor the temperature of the electric motor and battery pack using the Tesla service menu.
5
Check fluid levels, particularly brake fluid and coolant, to ensure they are at proper levels.

Solution

1. Preparation

Gather tools and materials needed for the repair.
Ensure the vehicle is parked on a level surface and set to "Park."
Disconnect the 12V battery as a safety precaution.

2. Brake Inspection and Replacement

Sub-steps:
1. Remove the wheel covers and wheels using a socket set.
2. Inspect brake pads and rotors for wear. Replace pads if they are worn down below the manufacturer's specifications.
3. If the rotors are damaged, replace them as well. Ensure to clean the rotor surfaces before installation.
4. Reinstall the wheels and torque them to the manufacturer’s specified values.

3. Electrical System Inspection

Sub-steps:
1. Inspect all visible wiring and connectors in the engine bay and undercarriage for signs of damage or corrosion.
2. Repair or replace any damaged wiring, ensuring connections are tight and free from corrosion.
3. Check the wiring harness near the battery for any signs of wear or overheating.

4. Cooling System Check

Sub-steps:
1. Inspect coolant levels and the condition of the hoses. Replace any that are cracked or leaking.
2. Flush the cooling system if the coolant appears dirty or contaminated.
3. Ensure the electric cooling fans are operational and replace any faulty fans.