my Tesla Model 3 Original (2017-2023) has a warning that the brakes are hot what should I do

Tesla Model 3 Highland (2024-present)

Error Codes

2-4 hours

Time

medium

Difficulty

high

Severity

3 min read

561 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 overheating brakes in Tesla Model 3 (2017-2023). Step-by-step guide with symptoms, diagnostic steps, and repair instructions.

Affected Component

Brakes

Estimated Time

2-4 hours

⚠️ Safety Warnings

Important safety information - read before proceeding

•Allow the brakes to cool before inspection or repair to avoid burns.
•Ensure proper lifting equipment is used when working under the vehicle.

Symptoms

•Warning message indicating 'Brakes are hot'
•Reduced braking performance
•Strange odors, possibly burning smell
•Increased brake pedal travel
•Brake warning light illuminated on the dashboard

Diagnostic Steps

1
Inspect the brake fluid reservoir for proper fluid level and condition.
2
Check for any visible signs of brake fluid leaks around calipers and lines.
3
Perform a visual inspection of the brake components including pads, rotors, and calipers for wear and damage.
4
Use an infrared thermometer to measure the temperature of the brake components to confirm overheating.
5
Verify if any error codes are present using an OBD-II scanner.

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 bleeder kit
•Infrared thermometer
•OBD-II scanner

Parts Required

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

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Diagnostic Steps

1
Inspect the brake fluid reservoir for proper fluid level and condition.
2
Check for any visible signs of brake fluid leaks around calipers and lines.
3
Perform a visual inspection of the brake components including pads, rotors, and calipers for wear and damage.
4
Use an infrared thermometer to measure the temperature of the brake components to confirm overheating.
5
Verify if any error codes are present using an OBD-II scanner.

Solution

1. Preparation

Gather necessary tools and parts.
Ensure the vehicle is parked on a level surface and the parking brake is engaged.
Allow the vehicle to cool down before inspecting the brakes.

2. Inspect Brake Components

Sub-steps:
- Remove the wheel using a socket set.
- Visually inspect brake pads for thickness; they should be at least 3mm thick.
- Check brake rotors for discoloration or warping.
- Inspect brake calipers for proper function and any signs of leakage.

3. Replace Worn Components (if necessary)

Sub-steps:
- If pads are worn, remove the caliper bolts and slide the caliper off the rotor.
- Remove the old brake pads and install new pads following the manufacturer’s specifications.
- Reinstall the caliper and torque bolts to the manufacturer’s specifications (usually around 80-100 Nm).
- If rotors are damaged, remove the caliper and rotor, and install new rotors ensuring to clean the hub surface before installation.

4. Bleed the Brake System

Sub-steps:
- Connect a brake bleeder kit to the brake caliper’s bleeder valve.
- Open the bleeder valve and pump the brake pedal lightly to remove air from the system.
- Close the bleeder valve once fluid runs clear of bubbles and repeat for each brake caliper.
- Ensure the brake fluid reservoir is kept topped up during this process.

5. Reassemble and Test

Sub-steps:
- Reinstall the wheel and torque the lug nuts to the manufacturer's specifications (usually around 100-120 Nm).
- Lower the vehicle and perform a test drive in a safe area to ensure proper brake function and check for any warning lights.