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

435 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 diagnostic procedures and repair instructions.

Affected Component

Brakes

Estimated Time

2-4 hours

⚠️ Safety Warnings

Important safety information - read before proceeding

•Always allow the brakes to cool before inspection or repair.
•Ensure the vehicle is securely lifted and supported before working underneath.

Symptoms

•Grinding noise during braking
•Reduced braking efficiency
•Vibration in the brake pedal
•Warning lights on the dashboard
•Increased stopping distance

Diagnostic Steps

1
Inspect brake pads for wear and tear using a visual inspection.
2
Check for debris or foreign objects lodged in the brake components.
3
Measure brake rotor thickness with a caliper to ensure they are within specifications.
4
Evaluate brake fluid level and condition to rule out contamination.
5
Test the brake calipers for proper movement and function.
6
Scan for any error codes using an OBD-II scanner to identify related issues.

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

•Jack and jack stands
•Socket set
•Torque wrench
•Brake cleaner
•Caliper tool
•OBD-II scanner

Parts Required

•Brake pads
•Brake rotors
•Brake grease

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Diagnostic Steps

1
Inspect brake pads for wear and tear using a visual inspection.
2
Check for debris or foreign objects lodged in the brake components.
3
Measure brake rotor thickness with a caliper to ensure they are within specifications.
4
Evaluate brake fluid level and condition to rule out contamination.
5
Test the brake calipers for proper movement and function.
6
Scan for any error codes using an OBD-II scanner to identify related issues.

Solution

1. Preparation

Gather necessary tools and parts.
Ensure the vehicle is parked on a flat surface and engage the parking brake.
Disconnect the 12V battery for safety.

2. Remove Wheel

Use a jack to lift the vehicle and secure it with jack stands.
Remove the lug nuts with a socket wrench and take off the wheel.

3. Inspect Brake Components

Brake Pads
- Remove the caliper bolts using a socket set.
- Slide the caliper off the rotor and suspend it safely without stressing the brake line.
- Inspect the brake pads for wear; if they are worn down to the indicator, replace them.
Brake Rotors
- Measure rotor thickness; if below manufacturer specifications, replace the rotors.
- Check for scoring or damage on the rotor surface. If damaged, replace.

4. Replace or Clean Components

If brake pads are worn, install new brake pads:
- Apply brake grease to the backing of the new pads.
- Slide the new pads into their slots.
If rotors need replacement:
- Remove old rotors and clean the hub surface.
- Install new rotors and torque to manufacturer specifications.

5. Reassemble and Test

Reattach the caliper and torque bolts to manufacturer specifications.
Reinstall the wheel and lug nuts, ensuring to torque them properly.
Lower the vehicle and reconnect the battery.

Tools Required:

Jack and jack stands
Socket set
Torque wrench
Brake cleaner
Caliper tool (if needed for piston retraction)
OBD-II scanner

Parts Required:

Brake pads (if worn)
Brake rotors (if damaged)
Brake grease

Estimated Repair Time: 2-4 hours

Safety Warnings:

Always allow the brakes to cool before inspection or repair.
Ensure the vehicle is securely lifted and supported before working underneath.