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

Tesla Model S Plaid/Refresh (2021-present)

Error Codes

2-4 hours

Time

medium

Difficulty

high

Severity

3 min read

557 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 the battery before working on electrical systems.
•Allow the brakes to cool before inspection or repair.

Symptoms

•Shaking or vibration felt through the steering wheel or pedal during braking
•Increased braking distance
•Unusual noises (e.g., grinding or squeaking) when braking
•Brake warning light illuminated on the dashboard
•Uneven wear on brake pads or rotors

Diagnostic Steps

1
Inspect brake pads for wear and ensure they are within manufacturer specifications.
2
Check brake rotors for warping or uneven surfaces using a run-out gauge.
3
Examine suspension components (e.g., control arms, bushings) for wear or damage.
4
Test brake fluid for contamination or low levels.
5
Scan for any error codes using an OBD-II scanner relevant 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

•OBD-II scanner
•Socket set
•Torque wrench
•Run-out gauge
•Brake lathe

Parts Required

•Brake pads
•Brake rotors

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Diagnostic Steps

1
Inspect brake pads for wear and ensure they are within manufacturer specifications.
2
Check brake rotors for warping or uneven surfaces using a run-out gauge.
3
Examine suspension components (e.g., control arms, bushings) for wear or damage.
4
Test brake fluid for contamination or low levels.
5
Scan for any error codes using an OBD-II scanner relevant to the braking system.

Solution

1. Preparation

Gather the necessary tools and parts.
Ensure the vehicle is parked on a level surface and the parking brake is engaged.
Disconnect the battery for safety while working on electrical components.

2. Inspect and Replace Brake Pads

Sub-steps:
- Remove the wheel using a socket set.
- Inspect brake pads for thickness; replace if they are below 3mm.
- If replacing, remove the caliper bolts using a torque wrench, and slide the caliper off.
- Replace old pads with new ones, ensuring proper alignment.
- Reinstall the caliper and torque bolts to manufacturer specifications (typically around 23-30 Nm).

3. Inspect and Resurface/Replace Rotors

Sub-steps:
- While the caliper is removed, check the rotor for warping using a run-out gauge.
- If warped beyond tolerances (usually more than 0.05 mm), either resurface or replace the rotor.
- For resurfacing, use a brake lathe according to specifications; if replacing, remove the rotor by unscrewing the retaining screws (if applicable).
- Install new or resurfaced rotor and torque to specifications (usually around 10-20 Nm).

4. Inspect and Repair Suspension Components

Sub-steps:
- Visually inspect control arms, bushings, and struts for any signs of wear or damage.
- Replace any worn components with OEM parts as necessary.
- Torque all suspension bolts to specifications (typically varies by part).

5. Reassemble and Test

Sub-steps:
- Reinstall the wheel and torque lug nuts to manufacturer specifications (typically around 100-120 Nm).
- Reconnect the battery.
- Perform a test drive to ensure the shaking during braking has been resolved.