why is my Tesla Model 3 Original (2017-2023) making a grinding noise when I brake?

Tesla Model 3 Highland (2024-present)

Error Codes

2-4 hours

Time

medium

Difficulty

high

Severity

3 min read

524 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 grinding 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 ensure the vehicle is securely lifted on jack stands before working beneath it.
•Wear safety goggles and gloves when handling brake components.

Symptoms

•Grinding noise during braking
•Reduced braking efficiency
•Vibration in the brake pedal
•Warning lights illuminated on the dashboard (e.g., brake warning light)
•Unusual wear on brake pads or rotors

Diagnostic Steps

1
Inspect brake pads for wear and damage.
2
Check brake rotors for scoring or warping.
3
Examine calipers for proper function and alignment.
4
Inspect the brake fluid level and condition.
5
Scan for any diagnostic trouble codes (DTCs) 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
•Jack stands
•Lug wrench
•Brake cleaner
•Torque wrench

Parts Required

•Brake pads
•Brake rotors (if worn)

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Solution

1. Preparation

Tools Required: Socket set, jack stands, lug wrench, brake cleaner, torque wrench.
Ensure safety by parking the vehicle on a level surface and engaging the parking brake.

2. Remove Wheel

Loosen lug nuts slightly while the wheel is on the ground.
Lift the vehicle using a jack and securely place jack stands underneath.
Remove the lug nuts completely and take the wheel off.

3. Inspect Brake Components

Brake Pads:
- Remove the caliper bolts using the socket set.
- Carefully slide the caliper off the brake rotor.
- Inspect the brake pads for thickness; replace if less than 3mm.
Brake Rotors:
- Check for any grooves, scoring, or rust buildup. Replace if necessary.
- Use a micrometer to measure rotor thickness; if below minimum specification, replace the rotor.

4. Replace Brake Pads and Rotors (if needed)

If replacing pads, remove the old pads from the caliper bracket.
Install new pads into the caliper bracket, ensuring proper alignment.
If replacing rotors, remove the old rotor, clean the hub surface, and install the new rotor.

5. Reassemble and Torque

Reattach the caliper over the new pads or rotor.
Tighten caliper bolts to manufacturer specifications using a torque wrench.
Reinstall the wheel and hand-tighten lug nuts before lowering the vehicle.

6. Final Checks

Lower the vehicle off the jack stands and tighten the lug nuts to the specified torque while the vehicle is on the ground.
Pump the brake pedal to ensure proper engagement of the brake pads against the rotors.