my Tesla Model S Plaid/Refresh (2021-present) has a burning smell after driving what could it be

Tesla Model S Plaid/Refresh (2021-present)

Error Codes

2-4 hours

Time

medium

Difficulty

high

Severity

3 min read

520 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 Plaid. 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 the battery before working on electrical systems
•Allow the vehicle to cool down before inspecting the electric motor and battery

Symptoms

•Burning smell noticeable inside or outside the vehicle
•Potential overheating warning on the dashboard
•Unusual sounds from the drivetrain or electric motor
•Reduced acceleration or power loss
•Smoke or haze coming from the vehicle

Diagnostic Steps

1
Check for any visible signs of smoke, burnt components, or fluid leaks under the vehicle and around the battery and motor areas
2
Use an OBD-II scanner to check for any diagnostic trouble codes (DTCs) related to the powertrain or electrical systems
3
Access the vehicle’s app or dashboard to monitor the battery temperature readings during and after a drive
4
Examine battery terminals and high-voltage connections for any signs of corrosion or looseness
5
Inspect brake pads and rotors for excessive wear or overheating signs, which could also cause a burning smell

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)
•Battery terminal cleaning kit (if corrosion is present)

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Diagnostic Steps

1
Check for any visible signs of smoke, burnt components, or fluid leaks under the vehicle and around the battery and motor areas
2
Use an OBD-II scanner to check for any diagnostic trouble codes (DTCs) related to the powertrain or electrical systems
3
Access the vehicle’s app or dashboard to monitor the battery temperature readings during and after a drive
4
Examine battery terminals and high-voltage connections for any signs of corrosion or looseness
5
Inspect brake pads and rotors for excessive wear or overheating signs, which could also cause a burning smell

Solution

1. Preparation

Tools Required: OBD-II scanner, multimeter, socket set, torque wrench.
Disconnect the negative battery terminal to ensure safety while inspecting electrical components.

2. Inspect Battery and Electrical Connections

Sub-steps:
1. Remove the battery cover if necessary (refer to the vehicle manual for specific instructions).
2. Visually inspect battery terminals for corrosion or damage.
3. Tighten any loose connections using a socket set.
4. Apply dielectric grease to terminals to prevent future corrosion.

3. Inspect the Drivetrain

Sub-steps:
1. Check the electric motor for any signs of overheating or damage.
2. Ensure that the motor mounts are secured and not allowing for excessive movement.
3. Inspect the cooling system for the motor, ensuring that coolant levels are adequate and there are no leaks.

4. Brake System Inspection

Sub-steps:
1. Remove the wheel to access the brake components.
2. Inspect brake pads for wear; replace if they are worn down excessively.
3. Check rotors for warping or discoloration, which may indicate overheating.
4. Reinstall the wheel and torque lug nuts to the manufacturer’s specifications.