my Tesla Model S Plaid/Refresh (2021-present) has a burning smell when I drive what's causing it

Tesla Model S Plaid/Refresh (2021-present)

Error Codes

2-4 hours

Time

medium

Difficulty

high

Severity

3 min read

569 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 a burning smell in your Tesla Model S Plaid. Follow our diagnostic steps and repair guide for effective solutions.

Affected Component

Electrical

Estimated Time

2-4 hours

⚠️ Safety Warnings

Important safety information - read before proceeding

•Disconnect the battery before working on electrical systems.
•Allow the vehicle to cool down before inspecting the engine bay or brakes.

Symptoms

•Burning smell while driving
•Possible smoke from under the hood or wheels
•Reduced braking performance (if related to brakes)
•Warning lights on the dashboard
•Odd noises (e.g., grinding or squeaking)

Diagnostic Steps

1
Inspect for visible smoke or signs of burning in the engine bay and around the wheels.
2
Check brake components for wear or overheating by examining brake pads and rotors.
3
Use an OBD-II scanner to check for any error codes related to the vehicle’s systems.
4
Inspect the wiring harness and connectors for any signs of fraying, melting, or damage.
5
Verify that the cooling system is functioning properly, checking coolant levels and radiator for blockages.
6
Assess tire condition for any signs of excessive wear or damage that could be contributing to the smell.

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
•Jack and jack stands
•Lug wrench
•Torque wrench
•Brake cleaner
•Measuring caliper
•Wire cutters
•Crimping tool
•Electrical tape
•Coolant
•Funnel

Parts Required

•Brake pads (if replacement is needed)
•Brake rotors (if replacement is needed)
•Electrical connectors (if wiring repair is needed)

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Diagnostic Steps

1
Inspect for visible smoke or signs of burning in the engine bay and around the wheels.
2
Check brake components for wear or overheating by examining brake pads and rotors.
3
Use an OBD-II scanner to check for any error codes related to the vehicle’s systems.
4
Inspect the wiring harness and connectors for any signs of fraying, melting, or damage.
5
Verify that the cooling system is functioning properly, checking coolant levels and radiator for blockages.
6
Assess tire condition for any signs of excessive wear or damage that could be contributing to the smell.

Solution

1. Preparation

Ensure the vehicle is parked on a flat surface and the parking brake is engaged.
Disconnect the battery to prevent electrical shock or short circuits.
Gather necessary tools and parts.

2. Brake Inspection and Replacement (if necessary)

Sub-steps:
1. Remove the wheel using a jack and jack stands.
2. Inspect brake pads for wear; replace if less than 3mm thick.
  - Tools Required: Jack, jack stands, lug wrench, torque wrench.
3. Inspect brake rotors for scoring or overheating; replace if necessary.
  - Tools Required: Brake cleaner, measuring caliper.
4. Reassemble the wheel and tighten lug nuts to manufacturer specifications.

3. Wiring Inspection and Repair (if necessary)

Sub-steps:
1. Carefully inspect the wiring harness for any signs of damage or melting.
2. Repair or replace damaged wires using suitable connectors or electrical tape.
  - Tools Required: Wire cutters, crimping tool, electrical tape.
3. Reconnect the battery after all repairs are completed.

4. Cooling System Check

Sub-steps:
1. Inspect coolant levels in the reservoir; refill with manufacturer-recommended coolant if low.
2. Check for leaks around hoses and fittings.
3. Ensure radiator is free from debris and functioning correctly.
  - Tools Required: Coolant, funnel, rag for wiping spills.