my Tesla Model S Original (2012-2020) has a burnt smell coming from the engine what's happening

Tesla Model S Plaid/Refresh (2021-present)

Error Codes

2-4 hours

Time

medium

Difficulty

high

Severity

3 min read

492 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 burnt smell from engine in Tesla Model S (2012-2020). 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 working on electrical systems.
•Allow the vehicle to cool down before inspecting the engine compartment.

Symptoms

•Burnt smell emanating from the engine compartment
•Possible overheating of components
•Warning lights illuminated on the dashboard
•Reduced performance or power loss
•Unusual noises from the electric motor or components

Diagnostic Steps

1
Inspect the engine compartment for visible signs of burnt wiring or components.
2
Use a multimeter to check for electrical shorts or abnormal resistance in wiring harnesses.
3
Scan the vehicle’s onboard diagnostics using an OBD-II scanner for any error codes related to the motor or battery.
4
Check the condition of the battery pack and associated cooling systems for leaks or blockages.
5
Examine the electric motor for signs of overheating or damage.

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
•Flashlight

Parts Required

•Replacement wiring or connectors
•Any damaged electrical components or battery cells

Related Faults

Share this solution

Comments

No comments yet

Be the first to share your thoughts

Back to Generation

Diagnostic Steps

1
Inspect the engine compartment for visible signs of burnt wiring or components.
2
Use a multimeter to check for electrical shorts or abnormal resistance in wiring harnesses.
3
Scan the vehicle’s onboard diagnostics using an OBD-II scanner for any error codes related to the motor or battery.
4
Check the condition of the battery pack and associated cooling systems for leaks or blockages.
5
Examine the electric motor for signs of overheating or damage.

Solution

1. Preparation

Gather all necessary tools and parts.
Ensure the vehicle is parked on a level surface and is powered down.
Safety: Disconnect the 12V battery before working on electrical systems.

2. Inspect Wiring and Components

Tools Required: Visual inspection tools (flashlight), multimeter
Check for any burnt or damaged wiring insulation.
Look for melted connectors or components indicating overheating.
If found, proceed to replace the damaged wires or connectors.

3. Test Electrical Systems

Tools Required: Multimeter
Set the multimeter to measure resistance.
Check each wire for continuity and look for shorts between wires.
If shorts are detected, repair or replace the affected wiring harness.

4. Examine Battery Pack

Tools Required: Torque wrench, socket set
Remove any covers to access the battery pack.
Inspect the battery cooling system, ensuring no blockages or leaks are present.
Check for any signs of swelling or damage on the battery cells.

5. Repair or Replace Damaged Components

If any components are found to be burnt or damaged during inspection (e.g., wiring, connectors, or battery cells), replace them with OEM parts.
Reassemble all components and connectors securely.
Torque connections to manufacturer specifications.