my Tesla Model Y has a burning smell when accelerating what's happening

Tesla Model Y Current (2020-present)

Error Codes

2-4 hours

Time

medium

Difficulty

high

Severity

3 min read

548 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 during acceleration in Tesla Model Y. Step-by-step guide with diagnostic procedures and repair instructions.

Affected Component

Brakes

Estimated Time

2-4 hours

⚠️ Safety Warnings

Important safety information - read before proceeding

•Always disconnect the high-voltage battery before working on electrical components
•Allow the vehicle to cool before inspecting brake components to avoid burns

Symptoms

•Burning smell when accelerating
•Possible high-pitched noise during acceleration
•Reduced power or sluggish acceleration
•Warning lights on the dashboard (e.g., battery or brake system)
•Unusual heat from the brakes or electric motor

Diagnostic Steps

1
Inspect for any visible damage or wear on the brake components (pads, rotors, calipers)
2
Check for error codes using the Tesla diagnostic tool or mobile app
3
Examine the battery pack and electrical connections for signs of overheating or damage
4
Monitor the coolant levels in the battery cooling system
5
Test drive the vehicle to replicate the burning smell and identify the conditions under which it occurs

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

•Tesla diagnostic tool
•Torque wrench
•Socket set
•Safety goggles
•Jack
•Jack stands

Parts Required

•Brake pads (if replacement is needed)
•Brake rotors (if replacement is needed)
•Battery coolant (if levels are low)

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Diagnostic Steps

1
Inspect for any visible damage or wear on the brake components (pads, rotors, calipers)
2
Check for error codes using the Tesla diagnostic tool or mobile app
3
Examine the battery pack and electrical connections for signs of overheating or damage
4
Monitor the coolant levels in the battery cooling system
5
Test drive the vehicle to replicate the burning smell and identify the conditions under which it occurs

Solution

1. Preparation

Gather tools and equipment: Tesla diagnostic tool, torque wrench, socket set, and safety goggles.
Ensure the vehicle is parked on a level surface and engage the parking brake.

2. Inspect and Replace Brake Components (if needed)

Remove the Wheel:
- Loosen lug nuts with a socket wrench.
- Use a jack to lift the vehicle and secure it with jack stands.
- Remove the wheel to access the brake assembly.
Inspect Brake Pads and Rotors:
- Check the thickness of the brake pads; replace if below the manufacturer's recommended level.
- Inspect rotors for warping, scoring, or excessive wear.
Replace Brake Pads/Rotor (if necessary):
- Remove the caliper bolts and slide the caliper off the rotor.
- Replace the brake pads, ensuring proper alignment.
- Reinstall the caliper and torque bolts to manufacturer specifications.
- If replacing rotors, remove old rotor, clean hub surface, and install new rotor.

3. Check Battery and Electrical Components

Inspect Battery Cooling System:
- Locate the battery cooling manifold and inspect for leaks or blockages.
- Ensure coolant levels are adequate; top off with manufacturer-approved coolant if necessary.
Examine Electrical Connections:
- Check all connections related to the electric motor and battery for signs of corrosion or damage.
- Tighten any loose connections to prevent overheating.

4. Reassemble Vehicle

Reinstall the wheel and hand-tighten the lug nuts.
Lower the vehicle and torque the lug nuts to the manufacturer's specifications.