why does my Tesla Model 3 Original (2017-2023) make a weird noise when braking?

Tesla Model 3 Highland (2024-present)

Error Codes

2-4 hours

Time

medium

Difficulty

high

Severity

3 min read

527 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 unusual brake noises in Tesla Model 3 (2017-2023). 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

•Disconnect the 12V battery before working on electrical components
•Allow the brakes to cool before touching any components after driving

Symptoms

•High-pitched squealing or grinding noise when applying brakes
•Pulsation felt through the brake pedal
•Decreased braking performance or responsiveness
•Warning messages on the dashboard related to brakes
•Vibration or shaking in the steering wheel when braking

Diagnostic Steps

1
Inspect brake pads for wear using visual examination.
2
Check brake rotors for scoring, warping, or damage.
3
Examine calipers for proper operation and any signs of sticking.
4
Listen for brake noise while performing a low-speed brake test in a safe area.
5
Scan for any error codes related to the braking system 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

•OBD-II scanner
•Jack and jack stands
•Socket set
•Torque wrench
•Brake cleaner
•Anti-squeal grease

Parts Required

•Brake pads
•Brake rotors

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Diagnostic Steps

1
Inspect brake pads for wear using visual examination.
2
Check brake rotors for scoring, warping, or damage.
3
Examine calipers for proper operation and any signs of sticking.
4
Listen for brake noise while performing a low-speed brake test in a safe area.
5
Scan for any error codes related to the braking system using an OBD-II scanner.

Solution

1. Preparation

Gather necessary tools and parts.
Park the vehicle on a level surface and engage the parking brake.
Place wheel chocks behind the rear wheels to prevent rolling.

2. Remove Wheel

Use a jack to lift the front or rear of the vehicle (depending on which brakes are affected).
Secure with jack stands.
Remove the lug nuts with a socket set and take off the wheel.

3. Inspect and Replace Brake Pads

Inspect Brake Pads:
- Check the thickness of the brake pads; replace if less than 3mm.
Remove Old Brake Pads:
- Remove caliper bolts using a socket set, then carefully slide the caliper off.
- Remove the old brake pads from the caliper bracket.
Install New Brake Pads:
- Apply anti-squeal grease to the back of the new pads.
- Slide the new brake pads into place in the caliper bracket.

4. Inspect and Replace Brake Rotors (if needed)

Inspect Rotors:
- Measure rotor thickness and check for warping with a dial indicator.
Remove Rotors:
- Remove the caliper bracket if necessary, then take off the rotor.
Install New Rotors:
- Place new rotors onto the hub and secure them.
- Reinstall the caliper bracket if it was removed.

5. Reassemble and Test

Reattach the caliper to the bracket and tighten bolts to manufacturer torque specifications (typically 25-35 ft-lbs).
Reinstall the wheel and lug nuts, ensuring they are torqued properly.
Lower the vehicle and remove wheel chocks.