why do the brakes on my Tesla Model S Original (2012-2020) smell like burning

Tesla Model S Plaid/Refresh (2021-present)

Error Codes

2-4 hours

Time

medium

Difficulty

high

Severity

3 min read

593 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 burning smell from brakes on Tesla Model S (2012-2020). Step-by-step guide with symptoms, diagnostics, 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 the brake components to cool before handling to prevent burns.

Symptoms

•Burning smell from the wheels or brake area
•Reduced braking performance
•Brake pedal feels spongy or unresponsive
•Warning light for brakes illuminated on the dashboard
•Excessive heat near the brake components

Diagnostic Steps

1
Inspect brake pads for wear and damage.
2
Check brake fluid level and condition.
3
Examine brake calipers for proper operation and signs of sticking.
4
Look for signs of overheating in the brake rotors.
5
Use an OBD-II scanner to check for any error codes related to the braking system.

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

•Socket set
•Torque wrench
•Brake fluid flush kit
•Bungee cord
•OBD-II scanner

Parts Required

•Brake pads
•Brake fluid
•Caliper repair kit (if needed)

Related Faults

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Solution

1. Preparation

Gather necessary tools and parts.
Ensure the vehicle is on a level surface and engage the parking brake.
Disconnect the negative battery terminal to prevent electrical issues.

2. Inspect and Replace Brake Pads

Remove the wheel to access the brake assembly.
Using a socket set, remove the caliper mounting bolts.
Carefully slide the caliper off the rotor and support it with a bungee cord (do not let it hang by the brake line).
Remove old brake pads and inspect for wear; replace if they are below the manufacturer’s minimum thickness.
Install new brake pads, ensuring they are properly aligned.

3. Check and Replace Brake Fluid

Inspect the brake fluid reservoir for proper fluid level.
If fluid is low, check for leaks in the brake lines and fittings.
If fluid appears contaminated (dark or muddy), flush the system:
- Locate the bleeder screw on each brake caliper.
- Attach a clear tube to the bleeder screw and submerge it in a container.
- With an assistant pressing the brake pedal, open the bleeder screw to allow old fluid to escape until new fluid appears.
- Close the bleeder screw and repeat for each wheel.
Refill the brake fluid reservoir with the manufacturer-recommended brake fluid.

4. Inspect and Repair Brake Calipers

Check that the calipers move freely; if they are stuck, clean or replace them.
Inspect the caliper pistons for damage or corrosion; replace if necessary.
Lubricate the caliper slide pins with high-temperature brake grease before reassembling.

5. Final Assembly and Testing

Reinstall the wheel and hand-tighten the lug nuts.
Lower the vehicle to the ground and torque the lug nuts to the manufacturer’s specifications.
Reconnect the battery terminal and check for any warning lights.
Test the brakes at low speed in a safe area to ensure proper function.