my Tesla Model S Original (2012-2020) has a burning smell what should I check

Tesla Model S Plaid/Refresh (2021-present)

Error Codes

2-4 hours

Time

medium

Difficulty

high

Severity

4 min read

604 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 a burning smell 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

•Ensure the vehicle is powered off before working on electrical systems
•Always handle battery components with care; they may hold a charge
•Allow the system to cool before opening any coolant caps
•Ensure the vehicle is securely lifted before working underneath

Symptoms

•Burning odor inside or outside the vehicle
•Possible smoke emanating from under the hood or rear
•Warning lights illuminated on the dashboard
•Reduced performance or power loss
•Unusual sounds from the electric motor or battery area

Diagnostic Steps

1
Scan for error codes using OBD-II scanner
2
Inspect the vehicle's wiring, connectors, and components for signs of damage
3
Use the Tesla service app or Tesla service tools to check the battery's health and temperature
4
Verify that the coolant levels are adequate and check for leaks in the cooling system
5
Check brake pads and rotors for excessive wear or overheating
6
Check the temperature readings of the electric motor during operation

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
•Basic hand tools (screwdrivers, pliers)
•Tesla service diagnostic tools
•Coolant pressure tester
•Flush kit
•Jack and jack stands
•Lug wrench
•Torque wrench

Parts Required

•Replacement brake pads (if necessary)
•Approved coolant (if a flush is needed)
•Electrical connectors or wiring (if damaged)

Related Faults

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Diagnostic Steps

1
Scan for error codes using OBD-II scanner
2
Inspect the vehicle's wiring, connectors, and components for signs of damage
3
Use the Tesla service app or Tesla service tools to check the battery's health and temperature
4
Verify that the coolant levels are adequate and check for leaks in the cooling system
5
Check brake pads and rotors for excessive wear or overheating
6
Check the temperature readings of the electric motor during operation

Solution

1. Preparation

Gather necessary tools and parts.
Ensure the vehicle is parked in a well-ventilated area.
Disconnect the vehicle from the charger.

2. Inspect Electrical Components

Sub-steps:
1. Remove any panels covering the wiring harness.
2. Check for any burned or damaged wires and connectors.
  - Tools required: Basic hand tools (screwdrivers, pliers).
  - Safety warnings: Ensure the vehicle is powered off before working on electrical systems.

3. Check Battery Pack

Sub-steps:
1. Use Tesla's diagnostic tools to check for any battery faults or over-temperature conditions.
2. If a fault is identified, consult Tesla service for potential battery replacement.
  - Tools required: Tesla service diagnostic tools.
  - Safety warnings: Always handle battery components with care; they may hold a charge.

4. Inspect and Clean Cooling System

Sub-steps:
1. Check the coolant reservoir and fill it to the manufacturer's recommended level if low.
2. Inspect hoses and connections for leaks or damage.
3. If necessary, flush the coolant system and replace with approved coolant.
  - Tools required: Coolant pressure tester, flush kit.
  - Safety warnings: Allow the system to cool before opening any coolant caps.

5. Brake System Inspection

Sub-steps:
1. Remove the wheel to access the brake components.
2. Inspect the brake pads for wear; replace them if they are close to the wear indicators.
3. Check the rotors for signs of overheating or warping; replace if necessary.
  - Tools required: Jack and jack stands, lug wrench, torque wrench.
  - Safety warnings: Ensure the vehicle is securely lifted before working underneath.