my Tesla Model S has a strong burning smell after driving what's causing it

Tesla Model S Plaid/Refresh (2021-present)

Error Codes

2-4 hours

Time

medium

Difficulty

high

Severity

3 min read

585 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. Step-by-step guide with symptoms, diagnostic steps, and repair instructions.

Affected Component

Brakes

Estimated Time

2-4 hours

⚠️ Safety Warnings

Important safety information - read before proceeding

•Disconnect the battery before working on electrical systems.
•Allow components to cool before inspection or handling to avoid burns.

Symptoms

•Strong burning smell from the vehicle
•Possible smoke coming from under the hood or wheels
•Decreased braking performance
•Warning lights on the dashboard (e.g., brake warning light)
•Unusual noises when braking or accelerating
•Vehicle may enter ‘limp mode’ or reduce power

Diagnostic Steps

1
Inspect for any visible smoke or burning components, especially around the battery pack and brake system.
2
Use an OBD-II scanner to check for any stored error codes that may indicate electrical or mechanical issues.
3
Examine the brake pads and rotors for excessive wear or overheating.
4
Check the electrical connections and wiring for signs of melting insulation or burnt components.
5
Inspect the tires for any signs of contact with the brake components or excessive wear that could indicate alignment issues.
6
Look for any fluid leaks that could potentially cause burning smells, such as oil or coolant.

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
•Hydraulic jack
•Jack stands
•Socket set
•Torque wrench
•Screwdrivers

Parts Required

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

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Diagnostic Steps

1
Inspect for any visible smoke or burning components, especially around the battery pack and brake system.
2
Use an OBD-II scanner to check for any stored error codes that may indicate electrical or mechanical issues.
3
Examine the brake pads and rotors for excessive wear or overheating.
4
Check the electrical connections and wiring for signs of melting insulation or burnt components.
5
Inspect the tires for any signs of contact with the brake components or excessive wear that could indicate alignment issues.
6
Look for any fluid leaks that could potentially cause burning smells, such as oil or coolant.

Solution

1. Preparation

Ensure the vehicle is parked on a flat, stable surface.
Disconnect the 12V battery to prevent electrical shorts.
Gather tools and safety equipment (gloves, goggles).

2. Inspect and Replace Brake Components

Jack up the Vehicle:
- Use a hydraulic jack and jack stands to elevate the vehicle safely.
Remove the Wheel:
- Use a socket set to remove the lug nuts and take off the wheel.
Inspect Brake Pads and Rotors:
- Check for wear indicators on the brake pads; replace if less than 3mm thick.
- Inspect rotors for scoring or discoloration; replace if damaged.
Replace Brake Pads (if necessary):
- Remove the caliper bolts using a torque wrench.
- Slide out the old brake pads and replace them with new ones.
- Reinstall the caliper and torque bolts to manufacturer specifications.

3. Electrical System Inspection

Check Wiring and Connections:
- Inspect all major wiring harnesses for damage or signs of overheating.
- Repair or replace any damaged wires; ensure secure connections.
Inspect Battery Pack:
- If accessible, visually inspect the battery for any signs of swelling or damage. If any issues are found, consult a professional.

4. Final Assembly

Reinstall the wheel and torque lug nuts to manufacturer specifications.
Reconnect the 12V battery.
Ensure all tools are removed from under the vehicle.