why does my Tesla Model S Plaid/Refresh (2021-present) have a burning smell

Tesla Model S Plaid/Refresh (2021-present)

Error Codes

2-4 hours

Time

medium

Difficulty

high

Severity

3 min read

500 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 any components.

Symptoms

•Burning smell noticeable inside or outside the vehicle
•Possible smoke from under the hood or near the wheels
•Intermittent warning lights on the dashboard (e.g., battery or electrical system alerts)
•Reduced performance or power loss during acceleration
•Overheating of the battery or motor components

Diagnostic Steps

1
Inspect the vehicle visually for any signs of smoke or melted components.
2
Use an OBD-II scanner to check for any error codes related to the electrical system or battery.
3
Check the battery temperature using the Tesla app or onboard diagnostics.
4
Inspect the brake components for overheating, including brake pads and rotors.
5
Look for any leaks or damaged wiring in the electrical system.
6
Review recent software updates or charging behaviors that could affect battery performance.

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
•Multimeter
•Brake pad replacement tools

Parts Required

•Replacement brake pads and rotors (if necessary)
•Battery cooling system components (fans, hoses)

Related Faults

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Symptoms

•Burning smell noticeable inside or outside the vehicle

•Possible smoke from under the hood or near the wheels

•Intermittent warning lights on the dashboard (e.g., battery or electrical system alerts)

•Reduced performance or power loss during acceleration

•Overheating of the battery or motor components

Diagnostic Steps

1
Inspect the vehicle visually for any signs of smoke or melted components.
2
Use an OBD-II scanner to check for any error codes related to the electrical system or battery.
3
Check the battery temperature using the Tesla app or onboard diagnostics.
4
Inspect the brake components for overheating, including brake pads and rotors.
5
Look for any leaks or damaged wiring in the electrical system.
6
Review recent software updates or charging behaviors that could affect battery performance.

Solution

1. Preparation

Ensure the vehicle is parked on a flat surface and turned off.
Gather tools and safety equipment: gloves, safety goggles, and a fire extinguisher (if available).

2. Inspect Electrical Components

Sub-steps:
- Open the front trunk and inspect the wiring harness for any signs of melting or damage.
- Check connectors for corrosion or loose connections.
- If wiring is damaged, disconnect the battery before proceeding with repairs.

3. Check and Replace Faulty Components

Sub-steps:
- Remove and inspect the battery cooling system components, including fans and hoses.
- Replace any damaged or clogged components with OEM parts.
- Inspect and clean the high-voltage battery connections and terminals.

4. Brake System Inspection

Sub-steps:
- Remove the wheel covers to access the brake assembly.
- Inspect brake pads and rotors for signs of excessive wear or overheating.
- Replace worn brake pads and resurfacing or replacing the rotors as necessary.

5. Test Battery and Cooling System

Sub-steps:
- Reconnect the battery and perform a battery health check through the vehicle's diagnostics.
- Monitor the battery cooling system while the vehicle is in operation to ensure it is functioning correctly.