my Tesla Model S Plaid/Refresh (2021-present) rear brakes are making noise, what should I check?

Tesla Model S Plaid/Refresh (2021-present)

Error Codes

1-3 hours

Time

medium

Difficulty

medium

Severity

3 min read

542 words

Problem Statement

Learn how to diagnose and fix rear brake noise in Tesla Model S Plaid. Step-by-step guide with diagnostic procedures and repair instructions.

Affected Component

Brakes

Estimated Time

1-3 hours

⚠️ Safety Warnings

Important safety information - read before proceeding

•Disconnect the battery before working on the brake system.
•Allow the vehicle to cool before working on brake components to avoid burns.

Symptoms

•High-pitched squealing or grinding noise from rear brakes
•Vibration or pulsation felt in the brake pedal
•Reduced braking efficiency
•Brake warning light illuminated on the dashboard
•Increased dust accumulation on rear wheels

Diagnostic Steps

1
Inspect the rear brake pads for wear and thickness using a brake pad gauge.
2
Check the rear brake rotors for scoring, warping, or uneven wear.
3
Examine the brake calipers for proper operation and signs of sticking or leakage.
4
Inspect for debris or foreign objects lodged between the brake components.
5
Verify proper brake fluid level in the reservoir and check for contamination.

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
•Lug wrench
•Floor jack and jack stands
•Brake cleaner
•Brake pad gauge
•Torque wrench

Parts Required

•Rear brake pads (if replacement is necessary)
•Rear brake rotors (if replacement is necessary)

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Diagnostic Steps

1
Inspect the rear brake pads for wear and thickness using a brake pad gauge.
2
Check the rear brake rotors for scoring, warping, or uneven wear.
3
Examine the brake calipers for proper operation and signs of sticking or leakage.
4
Inspect for debris or foreign objects lodged between the brake components.
5
Verify proper brake fluid level in the reservoir and check for contamination.

Solution

1. Preparation

Gather necessary tools and parts.
Ensure the vehicle is parked on a flat surface and secure it with wheel chocks.
Disconnect the battery before working on the brake system.

2. Remove Wheel

Loosen the lug nuts using a lug wrench.
Lift the vehicle using a floor jack and secure it on jack stands.
Completely remove the lug nuts and take off the rear wheel.

3. Inspect Brake Components

Caliper Removal:
- Remove the caliper mounting bolts using a socket wrench.
- Carefully slide the caliper off the rotor and suspend it using a bungee cord to avoid stress on the brake line.
Pad Inspection:
- Remove the brake pads from the caliper bracket and measure their thickness. Replace if less than 3mm.
Rotor Inspection:
- Check the rotor surface for grooves or damage. If necessary, resurface or replace the rotor.

4. Clean and Lubricate

Clean the caliper and bracket with brake cleaner to remove dust and debris.
Apply brake grease to the back of the brake pads and contact points on the caliper to prevent noise.

5. Reassemble

Reinstall the brake pads and caliper.
Torque the caliper mounting bolts to manufacturer specifications (typically 25-35 ft-lbs).
Reinstall the wheel and hand-tighten the lug nuts.

6. Lower Vehicle and Final Check

Lower the vehicle from jack stands and remove wheel chocks.
Tighten the lug nuts to the proper torque specification (typically 100-120 ft-lbs).
Reconnect the battery.