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

Tesla Model 3 Highland (2024-present)

Error Codes

2-4 hours

Time

medium

Difficulty

high

Severity

3 min read

546 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 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

•Disconnect the battery before working on electrical systems.
•Allow the vehicle to cool down before starting the repair.

Symptoms

•Grinding noise when applying brakes
•Decreased braking performance
•Vibration felt in the brake pedal
•Warning lights or alerts on the dashboard
•Increased stopping distance

Diagnostic Steps

1
Inspect brake pads for wear and damage.
2
Check brake rotors for grooves or warping.
3
Examine brake calipers for proper function and sticking.
4
Inspect brake fluid level and condition.
5
Scan the vehicle’s onboard computer for error codes 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
•Torque wrench
•Jack and jack stands
•Brake cleaner
•Bungee cord

Parts Required

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

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Solution

1. Preparation

Gather necessary tools and parts.
Ensure the vehicle is parked on a level surface and secure it with wheel chocks.
Disconnect the battery for safety.

2. Remove Wheel Assembly

Loosen the lug nuts slightly while the vehicle is still on the ground.
Raise the vehicle with a jack and secure it with jack stands.
Remove the lug nuts completely and take off the wheel.

3. Inspect and Replace Brake Pads

Locate the brake caliper and remove the caliper mounting bolts using a socket wrench.
Carefully slide the caliper off the rotor and suspend it with a bungee cord to avoid straining the brake line.
Remove the old brake pads from the caliper bracket.
Inspect the brake pad backing plates for any damage.
Install new brake pads, ensuring they are properly seated in the caliper bracket.

4. Inspect and Replace Brake Rotors (if necessary)

Check the rotor surface for grooves or excessive wear.
If replacement is needed, remove the rotor by unscrewing the retaining screws (if applicable) and sliding the rotor off the hub.
Clean the hub surface and install the new rotor, securing it with retaining screws.
If the rotor is in good condition, clean it with brake cleaner and inspect it for warping.

5. Reassemble and Reinstall Wheel

Slide the caliper back over the new brake pads and rotor.
Reinstall the caliper mounting bolts and torque them to the manufacturer's specifications (usually around 25-35 ft-lbs).
Reinstall the wheel and hand-tighten the lug nuts.
Lower the vehicle off the jack stands and then torque the lug nuts to the manufacturer's specifications (usually around 100-110 ft-lbs).

6. Reconnect Battery

Reconnect the battery terminals and ensure they are secure.