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

Tesla Model S Plaid/Refresh (2021-present)

Error Codes

2-4 hours

Time

medium

Difficulty

high

Severity

3 min read

466 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

Discover the causes of burning smells in Tesla Model S (2012-2020) and learn how to diagnose and fix electrical issues with step-by-step 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 to prevent shocks.
•Allow the vehicle to cool down before inspecting the battery or motor components.

Symptoms

•Burning odor inside or outside the vehicle
•Dashboard warning lights illuminated
•Unusual noise from the electric motor or components
•Overheating of the battery pack or charging system
•Reduced performance or power loss

Diagnostic Steps

1
Inspect the cabin for any visible signs of smoke or burnt components.
2
Use an OBD-II scanner to check for any error codes related to the battery, motor, or electrical systems.
3
Check the battery temperature using the vehicle's monitor or diagnostic tools.
4
Inspect the wiring and connectors in the engine bay and undercarriage for signs of damage or melting.
5
Evaluate the condition of the motor and its components for signs of wear or overheating.

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
•Wire cutters
•Electrical tape
•Heat shrink tubing

Parts Required

•Replacement wiring (if damaged)
•Replacement connectors (if damaged)
•Battery pack (if necessary)

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Diagnostic Steps

1
Inspect the cabin for any visible signs of smoke or burnt components.
2
Use an OBD-II scanner to check for any error codes related to the battery, motor, or electrical systems.
3
Check the battery temperature using the vehicle's monitor or diagnostic tools.
4
Inspect the wiring and connectors in the engine bay and undercarriage for signs of damage or melting.
5
Evaluate the condition of the motor and its components for signs of wear or overheating.

Solution

1. Preparation

Gather necessary tools and parts.
Ensure the vehicle is parked on a flat surface with the parking brake engaged.
Disconnect the vehicle's 12V battery to avoid electrical hazards.

2. Inspect and Repair Wiring

Tools Required: Wire cutters, electrical tape, heat shrink tubing, multimeter.
Inspect all wiring and connectors for signs of melting or damage.
Replace any damaged wiring with appropriate gauge wire.
Use heat shrink tubing and electrical tape to insulate repaired areas.

3. Check Battery and Motor

Tools Required: Torque wrench, socket set.
Remove the underbody panel to access the battery pack.
Inspect the battery pack and motor for any signs of overheating or damage.
If overheating is detected, consider replacing the battery pack if it's under warranty or contacting Tesla for repair.

4. Clean and Reassemble

Clean any debris or contaminants around the motor and battery area.
Reattach any components that were removed for inspection, ensuring all bolts are torqued to manufacturer specifications.
Reconnect the 12V battery.