my Tesla Model S Original (2012-2020) has a strange noise when braking, what's wrong

Tesla Model S Plaid/Refresh (2021-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 strange brake noises 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

•Always disconnect the battery before working on electrical systems.
•Allow the brakes to cool before inspection or repair to avoid burns.

Symptoms

•Unusual grinding or squeaking noise when applying brakes
•Vibration felt through the brake pedal
•Decreased braking efficiency or responsiveness
•Brake warning light illuminated on the dashboard
•Increased stopping distance

Diagnostic Steps

1
Inspect brake pads for wear and damage.
2
Check brake rotors for scoring or warping.
3
Examine brake calipers for proper operation and any signs of leakage.
4
Inspect the brake fluid level and condition.
5
Use an OBD-II scanner to check for any braking system-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
•OBD-II scanner

Parts Required

•Brake pads (if worn)
•Brake rotors (if damaged)
•Brake caliper (if leaking or damaged)

Related Faults

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Solution

1. Preparation

Gather necessary tools and parts.
Park the vehicle on a flat surface and engage the parking brake.
Place wheel chocks behind the rear wheels for added safety.
Disconnect the battery to prevent any electrical issues.

2. Remove Wheel

Use a lug wrench to loosen the lug nuts on the front or rear wheel where the noise is originating.
Raise the vehicle with a jack and secure it on jack stands.
Fully remove the lug nuts and take off the wheel.

3. Inspect Brake Components

Brake Pads:
- Remove the brake caliper by unscrewing the caliper mounting bolts.
- Carefully slide the caliper off the rotor.
- Inspect the brake pads for wear; replace if they are below the manufacturer’s specified thickness (typically 3mm).
Brake Rotors:
- Check the surface of the rotor for any scoring or warping.
- If damaged, replace the rotors. If they are within specifications, consider resurfacing if applicable.
Brake Calipers:
- Inspect the calipers for leaks and ensure they move freely.
- If stuck or leaking, replace the caliper.

4. Reassemble Components

If any components were replaced, install the new brake pads and rotor.
Reattach the brake caliper and secure it with the proper torque (usually around 79 ft-lbs for Tesla).
Reinstall the wheel and hand-tighten the lug nuts.

5. Final Checks

Lower the vehicle and remove the wheel chocks.
Reconnect the battery.
Pump the brake pedal several times to ensure proper brake pad seating and fluid pressure.