why is my Tesla Model S Original (2012-2020) making a grinding noise when braking

Tesla Model S Plaid/Refresh (2021-present)

Error Codes

2-4 hours

Time

medium

Difficulty

high

Severity

4 min read

603 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 S (2012-2020). 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 battery before working on the braking system.
•Ensure the vehicle is securely lifted and supported before working underneath.

Symptoms

•Grinding noise during braking
•Vibration felt through the brake pedal
•Reduced braking efficiency
•Warning lights on the dashboard (e.g., brake warning light)
•Uneven wear on brake pads (visible during inspection)

Diagnostic Steps

1
Inspect brake pads for wear and tear using visual examination.
2
Check brake rotors for scoring or warping.
3
Examine the brake calipers for proper function and alignment.
4
Inspect brake fluid level and quality.
5
Use an OBD-II scanner to check for any related error codes.

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 and jack stands
•Socket set
•Torque wrench
•Brake cleaner
•Brake grease

Parts Required

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

Related Faults

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Solution

1. Preparation

Gather all necessary tools and parts.
Ensure the vehicle is parked on a level surface and engage the parking brake.
Disconnect the 12V battery to prevent electrical issues.

2. Remove Wheel

Loosen the lug nuts on the wheel using a lug wrench.
Lift the vehicle using a jack and secure it with jack stands.
Remove the lug nuts completely and take off the wheel.

3. Inspect and Replace Brake Pads

Inspect Brake Pads:
- Examine the thickness of the brake pads. If they are worn down below 3mm, they should be replaced.
Remove Old Brake Pads:
- Use a socket set to remove the caliper bolts.
- Carefully slide the caliper off the rotor and support it with a bungee cord (do not let it hang on the brake line).
- Remove the old brake pads from the caliper bracket.
Install New Brake Pads:
- Apply brake grease to the back of the new pads to prevent squealing.
- Position the new pads in the caliper bracket and reattach the caliper over them.
Reinstall Caliper:
- Tighten the caliper bolts to the manufacturer’s specified torque value (typically 25-35 ft-lbs).

4. Check and Replace Brake Rotors (if necessary)

Inspect Rotors:
- Check for deep grooves or warping. If damaged, proceed to replace.
Remove Rotors:
- Use a socket set to remove the rotor retaining screws (if applicable) and slide the rotor off the hub.
Install New Rotors:
- Place the new rotor onto the hub and secure it with retaining screws.

5. Reassemble and Test

Reinstall the wheel and hand-tighten the lug nuts.
Lower the vehicle and torque the lug nuts to the manufacturer's specified value (typically 80-100 ft-lbs).
Reconnect the battery and pump the brake pedal a few times to ensure proper pad seating.
Test drive the vehicle to ensure the grinding noise has been resolved.