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

3 min read

530 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

Discover 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

•Ensure the vehicle is securely supported on jack stands before working underneath.
•Always disconnect the battery when working on electrical components associated with the braking system.

Symptoms

•Grinding noise when applying brakes
•Decreased braking performance
•Vibration or pulsation in the brake pedal
•Warning lights on the dashboard (if applicable)
•Brake dust accumulation on wheels

Diagnostic Steps

1
Inspect the brake pads for wear and thickness using a visual check.
2
Check the brake rotors for scoring or uneven wear.
3
Listen for the noise while applying brakes at low speeds for further assessment.
4
Inspect brake calipers for proper operation and any signs of sticking or malfunction.
5
Check for debris or foreign objects lodged between brake components.
6
Scan for any error codes using an OBD-II scanner 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

•Jack
•Jack stands
•Lug wrench
•Socket set
•Brake cleaner

Parts Required

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

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Diagnostic Steps

1
Inspect the brake pads for wear and thickness using a visual check.
2
Check the brake rotors for scoring or uneven wear.
3
Listen for the noise while applying brakes at low speeds for further assessment.
4
Inspect brake calipers for proper operation and any signs of sticking or malfunction.
5
Check for debris or foreign objects lodged between brake components.
6
Scan for any error codes using an OBD-II scanner related to the braking system.

Solution

1. Preparation

Gather tools such as a jack, jack stands, lug wrench, and socket set.
Ensure the vehicle is parked on a level surface and the parking brake is engaged.

2. Remove Wheel

Use the lug wrench to loosen the lug nuts slightly while the vehicle is still on the ground.
Lift the vehicle using a jack and secure it with jack stands.
Completely remove the lug nuts and take off the wheel to access the braking components.

3. Inspect Brake Pads and Rotors

Examine the brake pads for wear; replace them if they are less than 3mm thick.
Check the brake rotors for scoring or grooves. If they are damaged, consider resurfacing or replacing them.
Clean the rotor surface with brake cleaner to remove any dust or debris.

4. Replace Brake Pads (if necessary)

Remove the caliper by unbolting it from the bracket.
Slide the old brake pads out of the caliper bracket.
Insert new brake pads, ensuring they are properly aligned.
Reinstall the caliper over the new pads and torque the bolts to the manufacturer's specifications (usually around 25-30 ft-lbs).

5. Reassemble and Test

Reinstall the wheel and hand-tighten the lug nuts.
Lower the vehicle and tighten the lug nuts to the manufacturer’s recommended torque (usually around 100-110 ft-lbs).
Pump the brake pedal several times to ensure proper seating of the pads.