my Tesla Model S has a burning smell when I brake what could it be

Tesla Model S Plaid/Refresh (2021-present)

Error Codes

2-4 hours

Time

medium

Difficulty

high

Severity

3 min read

533 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 when braking in Tesla Model S. 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

•Allow the vehicle to cool down before working on the brakes.
•Always use jack stands when lifting the vehicle to prevent it from falling.

Symptoms

•Burning smell when braking
•Reduced braking efficiency
•Vibration or pulsation felt through the brake pedal
•Warning light on the dashboard (if applicable)
•Increased brake dust accumulation on wheels

Diagnostic Steps

1
Visually inspect brake components for wear or damage.
2
Check the brake fluid level and condition.
3
Scan the vehicle's diagnostic system for any fault codes.
4
Inspect brake pads and rotors for overheating or glazing.
5
Examine brake calipers for proper operation and any signs of sticking.

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

•Lug wrench
•Brake pad thickness gauge
•Socket set
•Torque wrench
•Brake fluid
•Brake bleeder kit (if bleeding is necessary)

Parts Required

•Brake pads
•Brake rotors (if needed)
•Brake fluid (if needed)

Related Faults

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Solution

1. Preparation

Gather necessary tools and parts.
Park the vehicle on a level surface and engage the parking brake.
Allow the brakes to cool down if they have been used recently.

2. Inspect Brake Components

Sub-steps:
1. Remove the wheel using a lug wrench.
2. Inspect brake pads for thickness; replace if worn below manufacturer specifications (usually 3mm or less).
3. Check rotors for signs of scoring or warping; replace if damaged or excessively worn.
Tools Required:
- Lug wrench
- Brake pad thickness gauge

3. Replace Brake Pads (if necessary)

Sub-steps:
1. If pads are worn, remove the caliper bolts with a socket set.
2. Carefully lift the caliper off the rotor and suspend it with a bungee cord to avoid strain on the brake line.
3. Remove the old brake pads and replace with new ones, ensuring proper orientation.
4. Reinstall the caliper and torque the bolts to manufacturer specifications (typically around 25-35 ft-lbs).
Tools Required:
- Socket set
- Torque wrench

4. Check and Replace Rotors (if necessary)

Sub-steps:
1. If rotors are damaged, remove the caliper bracket and rotor.
2. Install the new rotor, ensuring it is seated properly.
3. Reattach the caliper bracket and torque to specifications.
Tools Required:
- Socket set
- Torque wrench

5. Refill Brake Fluid (if necessary)

Sub-steps:
1. If brake fluid is low, add the recommended brake fluid type (usually DOT 3 or DOT 4).
2. Bleed the brakes if air is suspected in the lines.
Tools Required:
- Brake fluid
- Brake bleeder kit (if bleeding is necessary)