why does my Tesla Model S Plaid/Refresh (2021-present) shake when I brake hard

Tesla Model S Plaid/Refresh (2021-present)

Error Codes

2-4 hours

Time

medium

Difficulty

high

Severity

3 min read

577 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 brake shaking issues in Tesla Model S Plaid (2021-present). Step-by-step guide with symptoms, diagnostic steps, and repair instructions.

Affected Component

Brakes

Estimated Time

2-4 hours

⚠️ Safety Warnings

Important safety information - read before proceeding

•Disconnect battery before working on electrical systems.
•Allow brakes to cool before inspecting to avoid burns.

Symptoms

•Shaking or vibrating sensation felt through the steering wheel or brake pedal during hard braking
•Increased stopping distance when braking
•Possible noise from brakes, such as squeaking or grinding
•Uneven wear patterns observed on brake pads or rotors
•Warning lights related to the braking system may illuminate

Diagnostic Steps

1
Inspect brake pads and rotors for wear and damage.
2
Check the alignment of the wheels and suspension components.
3
Scan the vehicle's onboard diagnostics for any error codes related to the braking system.
4
Perform a visual inspection of the brake calipers and hardware for any signs of leaks or malfunctions.
5
Test drive the vehicle under controlled conditions to replicate the shaking and determine at what speeds it occurs.

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
•Caliper tool
•Micrometer
•Wrench set
•Pry bar for bushing removal

Parts Required

•Brake pads
•Brake rotors
•Suspension components (if needed)

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Symptoms

•Shaking or vibrating sensation felt through the steering wheel or brake pedal during hard braking

•Increased stopping distance when braking

•Possible noise from brakes, such as squeaking or grinding

•Uneven wear patterns observed on brake pads or rotors

•Warning lights related to the braking system may illuminate

Diagnostic Steps

1
Inspect brake pads and rotors for wear and damage.
2
Check the alignment of the wheels and suspension components.
3
Scan the vehicle's onboard diagnostics for any error codes related to the braking system.
4
Perform a visual inspection of the brake calipers and hardware for any signs of leaks or malfunctions.
5
Test drive the vehicle under controlled conditions to replicate the shaking and determine at what speeds it occurs.

Solution

1. Preparation

Gather necessary tools and parts.
Ensure the vehicle is parked on a level surface and set the parking brake.
Disconnect the negative battery terminal to prevent any electrical issues while working on the braking system.

2. Inspect and Replace Brake Components

Lift the Vehicle
- Use a jack and jack stands to lift the vehicle securely.
- Tools Required: Jack, jack stands, wheel chocks.
- Safety Warning: Ensure the vehicle is stable before working underneath.
Remove Wheels
- Use a socket set to remove the lug nuts and take off the wheels.
- Tools Required: Socket set, lug wrench.
Inspect Brake Pads and Rotors
- Check for uneven wear on the brake pads and look for grooves or warping on the rotors.
- If any components are worn beyond specifications, replace them.
- Tools Required: Caliper tool, micrometer for measuring rotor thickness.
Replace Brake Rotors (if necessary)
- Remove the brake caliper using the appropriate socket.
- Remove the old rotor and install the new rotor, ensuring it is seated properly.
- Reinstall the caliper and torque bolts to manufacturer specifications (usually around 25-30 lb-ft).
- Tools Required: Torque wrench.
Reassemble and Lower the Vehicle
- Reinstall the wheels and torque the lug nuts to the manufacturer's specifications (usually around 100-120 lb-ft).
- Lower the vehicle from the jack stands and remove the jack.

3. Check Suspension Components

Inspect Suspension System
- Check for any worn or damaged components such as control arms, bushings, and struts.
- Replace any worn parts as necessary to ensure proper alignment.
- Tools Required: Wrench set, pry bar for bushing removal.