my Tesla Model 3 Original (2017-2023) is making a loud noise when braking what's wrong

Tesla Model 3 Highland (2024-present)

Error Codes

2-4 hours

Time

medium

Difficulty

high

Severity

4 min read

619 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

Discover how to diagnose and fix loud noise when braking 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

•Always disconnect the battery before working on the braking system.
•Allow the vehicle to cool down to avoid burns when handling brakes.

Symptoms

•Loud grinding or squeaking noise when brakes are applied
•Vibration in the brake pedal
•Reduced braking efficiency
•Brake warning light illuminated on the dashboard
•Uneven wear on brake pads

Diagnostic Steps

1
Inspect brake pads for wear and damage using visual inspection.
2
Check brake rotors for scoring or warping by examining their surface condition.
3
Test brake fluid level and condition, ensuring it meets manufacturer specifications.
4
Listen for noise while the vehicle is stationary and the brakes are applied to determine if the noise is consistent.
5
Inspect brake calipers for proper operation and any signs of sticking or leakage.
6
Check for debris or foreign objects lodged between the rotor and brake pad.

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
•Jack
•Jack stands
•Socket set
•Torque wrench
•Brake grease

Parts Required

•Brake pads
•Brake rotors (if necessary)

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Diagnostic Steps

1
Inspect brake pads for wear and damage using visual inspection.
2
Check brake rotors for scoring or warping by examining their surface condition.
3
Test brake fluid level and condition, ensuring it meets manufacturer specifications.
4
Listen for noise while the vehicle is stationary and the brakes are applied to determine if the noise is consistent.
5
Inspect brake calipers for proper operation and any signs of sticking or leakage.
6
Check for debris or foreign objects lodged between the rotor and brake pad.

Solution

1. Preparation

Gather tools and parts required for the repair.
Ensure the vehicle is parked on a level surface and the parking brake is engaged.
Safety gear such as gloves and safety glasses should be worn.

2. Remove Wheel

Sub-steps:
1. Loosen the lug nuts on the wheel where the noise is occurring.
2. Lift the vehicle using a jack and secure it with jack stands.
3. Remove the lug nuts completely and take off the wheel.
Tools Required: Lug wrench, jack, jack stands.

3. Inspect and Replace Brake Pads

Sub-steps:
1. Remove the brake caliper bolts using a socket set.
2. Carefully lift the caliper off the rotor and support it with a bungee cord to avoid stress on the brake line.
3. Remove the old brake pads from the caliper bracket.
4. Inspect the brake pads for wear; if they are below the manufacturer's minimum thickness, replace them with new pads.
5. Apply brake grease to the back of the new pads and re-install them into the caliper bracket.
Tools Required: Socket set, brake grease.

4. Inspect and Replace Brake Rotors (if necessary)

Sub-steps:
1. If the rotors are scored or warped, remove them by unscrewing the retaining screws (if equipped) and sliding them off the hub.
2. Clean the hub surface before installing new rotors.
3. Install the new rotors, ensuring they are seated properly.
Tools Required: Torque wrench (for securing screws), socket set.

5. Reassemble and Check Brake System

Sub-steps:
1. Reposition the brake caliper over the new pads and secure it with the caliper bolts.
2. Reinstall the wheel and hand-tighten the lug nuts.
3. Lower the vehicle and torque the lug nuts to the manufacturer’s specifications.
4. Pump the brake pedal several times to seat the brake pads correctly before test driving.
Tools Required: Torque wrench.