my Tesla Model S Plaid/Refresh (2021-present) has a burning smell when driving what should I check

Tesla Model S Plaid/Refresh (2021-present)

Error Codes

2-4 hours

Time

medium

Difficulty

high

Severity

3 min read

472 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 burning smell issues in Tesla Model S Plaid/Refresh. 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 12V battery before inspecting electrical systems.
•Allow components to cool before handling to avoid burns.

Symptoms

•Burning smell inside or outside the vehicle
•Check battery temperature warning on the dashboard
•Reduced power or acceleration
•Overheating of components
•Unusual noises from the motor or drivetrain

Diagnostic Steps

1
Scan for error codes using the vehicle's onboard diagnostics system.
2
Inspect the battery pack for any signs of damage or overheating.
3
Check for visible signs of smoke or melting insulation in the electrical wiring.
4
Examine the brakes for signs of overheating, such as discoloration or burning odor.
5
Review the coolant levels and check for leaks in the thermal management system.

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
•Infrared thermometer
•Automotive jack
•Jack stands

Parts Required

•Brake pads and rotors (if worn)
•Electrical wiring and connectors (if damaged)

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Diagnostic Steps

1
Scan for error codes using the vehicle's onboard diagnostics system.
2
Inspect the battery pack for any signs of damage or overheating.
3
Check for visible signs of smoke or melting insulation in the electrical wiring.
4
Examine the brakes for signs of overheating, such as discoloration or burning odor.
5
Review the coolant levels and check for leaks in the thermal management system.

Solution

1. Preparation

Tools Required: OBD-II scanner, multimeter, infrared thermometer, automotive jack and jack stands.
Ensure the vehicle is parked on a level surface, and the parking brake is engaged.
Disconnect the 12V battery for safety before starting any inspection.

2. Inspect Battery Pack

Sub-steps:
1. Remove the rear cover or access panel to reach the battery pack.
2. Visually inspect for any signs of swelling, leaks, or burns.
3. Use an infrared thermometer to check for hotspots; temperatures above 60°C (140°F) indicate a potential problem.
4. If damage is found, consult a qualified technician for battery replacement.

3. Brake System Check

Sub-steps:
1. Remove the wheel covers to access the brake components.
2. Inspect brake pads and rotors for excessive wear or glazing.
3. Check the brake caliper for signs of overheating or fluid leakage.
4. Replace any worn or damaged components, ensuring the use of OEM parts.

4. Electrical Wiring Inspection

Sub-steps:
1. Check all accessible wiring for signs of fraying, melting, or corrosion.
2. Use a multimeter to test for continuity and shorts in the wiring harness.
3. Repair or replace any damaged wiring found during the inspection.