my Tesla Model 3 Original (2017-2023) has a burning smell after driving

Tesla Model 3 Highland (2024-present)

Error Codes

2-4 hours

Time

medium

Difficulty

high

Severity

3 min read

571 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 3 (2017-2023). 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 off and cooled down before inspection.
•Disconnect the 12V battery before working on electrical components.

Symptoms

•Burning smell, particularly after driving
•Potential loss of power or performance
•Warning lights illuminated on the dashboard
•Unusual noises from the electric motor or battery
•Smoke or visible signs of overheating under the hood

Diagnostic Steps

1
Inspect the vehicle for any visible signs of overheating, such as melted insulation or smoke.
2
Use an OBD-II scanner to check for any error codes related to the battery, motor, or electrical system.
3
Check the battery coolant level and inspect for leaks in the cooling system.
4
Examine the electric motor and associated wiring for signs of damage or burning.
5
Inspect the brake system for overheating, including brake pads and rotors, which can cause burning smells.
6
Review recent software updates or recalls that may impact vehicle performance.

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
•Socket set
•Torque wrench
•Brush
•Coolant pump tester
•Jack and jack stands

Parts Required

•Tesla-approved coolant
•Replacement brake pads or rotors (if needed)

Related Faults

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Diagnostic Steps

1
Inspect the vehicle for any visible signs of overheating, such as melted insulation or smoke.
2
Use an OBD-II scanner to check for any error codes related to the battery, motor, or electrical system.
3
Check the battery coolant level and inspect for leaks in the cooling system.
4
Examine the electric motor and associated wiring for signs of damage or burning.
5
Inspect the brake system for overheating, including brake pads and rotors, which can cause burning smells.
6
Review recent software updates or recalls that may impact vehicle performance.

Solution

1. Preparation

Ensure the vehicle is parked on a flat surface and turned off.
Allow the vehicle to cool down before starting any inspection.
Gather tools and parts as needed.

2. Inspect and Clean Electric Motor

Tools Required: Socket set, brush, safety gloves
Instructions:
1. Remove the motor cover by unscrewing the bolts using a socket set.
2. Inspect the motor for any signs of debris or damage. Clean the area with a brush if necessary.
3. Check the electrical connections for corrosion or burns; clean or replace as needed.

3. Examine Battery Cooling System

Tools Required: Torque wrench, coolant pump tester
Instructions:
1. Locate the battery coolant reservoir and check the level; refill with Tesla-approved coolant if low.
2. Inspect the coolant lines for leaks or blockages.
3. Ensure the coolant pump is operational by testing it with a coolant pump tester. Replace if defective.

4. Brake System Inspection

Tools Required: Jack and jack stands, torque wrench
Instructions:
1. Lift the vehicle using a jack and secure it on jack stands.
2. Remove the wheels to access the brake components.
3. Inspect brake pads and rotors for excessive wear or overheating signs. Replace if necessary.
4. Reinstall the wheels and lower the vehicle.

5. Reassemble and Test

Tools Required: Torque wrench
Instructions:
1. Reinstall any removed components or covers and ensure all bolts are torqued to manufacturer specifications.
2. Test drive the vehicle for a short distance and monitor for any abnormal smells or sounds.