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

528 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 in Tesla Model S Plaid. 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 electrical systems.
•Allow brakes to cool before performing inspections or repairs.

Symptoms

•Shaking or vibrating sensation in the steering wheel during hard braking
•Pulsation felt through the brake pedal
•Uneven brake pad wear
•Possible increased stopping distance
•Noise (grinding or squeaking) when braking

Diagnostic Steps

1
Inspect brake pads for uneven wear and adequate thickness.
2
Check brake rotors for warping using a runout gauge.
3
Examine suspension components (control arms, bushings) for wear or damage.
4
Inspect wheel lug nuts for proper torque and security.
5
Test drive the vehicle to assess braking performance and vibration characteristics.

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
•Torque wrench
•Brake pad spreader
•Runout gauge
•Wrenches
•Pry bar

Parts Required

•Brake pads
•Brake rotors (if warped)
•Suspension components (if worn)

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Diagnostic Steps

1
Inspect brake pads for uneven wear and adequate thickness.
2
Check brake rotors for warping using a runout gauge.
3
Examine suspension components (control arms, bushings) for wear or damage.
4
Inspect wheel lug nuts for proper torque and security.
5
Test drive the vehicle to assess braking performance and vibration characteristics.

Solution

1. Preparation

Gather necessary tools and parts.
Ensure the vehicle is parked on a flat surface and secure with wheel chocks.
Disconnect the battery for safety.

2. Inspect and Replace Brake Pads

Tools Required: Socket set, torque wrench, brake pad spreader
Sub-steps:
1. Remove the wheel using a socket set.
2. Inspect the brake pads for wear. If the pads are below 3mm, replace them.
3. If replacing, remove the caliper bolts and lift the caliper off the rotor.
4. Remove old pads and install new ones, ensuring they are seated properly.
5. Reinstall the caliper and torque bolts to manufacturer specifications.

3. Check and Resurface/Replace Brake Rotors

Tools Required: Runout gauge, torque wrench
Sub-steps:
1. Check the rotor for warping using a runout gauge. Measure at various points; if runout exceeds specifications, the rotor needs resurfacing or replacement.
2. If replacing, remove the rotor by unscrewing the retaining screws (if applicable) and sliding it off the hub.
3. Install a new rotor, ensuring it's clean and properly seated.
4. Torque rotor screws to the manufacturer’s specifications.

4. Inspect Suspension Components

Tools Required: Wrenches, pry bar
Sub-steps:
1. Visually inspect control arms, bushings, and ball joints for signs of wear or damage.
2. Use a pry bar to check for play in bushings and joints.
3. Replace any worn or damaged components, ensuring proper torque specifications during installation.

5. Reassemble and Test

Reinstall the wheel and torque lug nuts to manufacturer specifications.
Reconnect the battery.
Conduct a test drive to ensure the issue is resolved.