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

Tesla Model S Plaid/Refresh (2021-present)

Error Codes

2-4 hours

Time

medium

Difficulty

high

Severity

4 min read

606 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

Discover how to diagnose and fix shaking during braking in Tesla Model S Plaid. 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

•Always use jack stands to support the vehicle while working underneath.
•Disconnect the battery before working on electrical systems.
•Allow the vehicle to cool before working on the braking system.

Symptoms

•Shaking or vibration felt in the steering wheel or brake pedal while braking
•Pulsating brake pedal feedback
•Increased stopping distance
•Unusual noises (e.g., squeaking or grinding) when braking
•Warning lights illuminated on the dashboard (if applicable)

Diagnostic Steps

1
Inspect brake pads for wear and uneven wear patterns.
2
Check brake rotors for warping or damage.
3
Examine brake calipers for sticking or malfunction.
4
Verify brake fluid level and condition.
5
Scan for error codes using an OBD-II scanner to check for any electronic issues.
6
Inspect suspension components for wear, as they can affect braking feel.

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

•Lifting jack
•Jack stands
•Lug wrench
•Torque wrench
•OBD-II scanner
•Brake cleaner
•Inspection mirror

Parts Required

•Brake pads
•Brake rotors
•Brake calipers (if needed)
•Brake fluid

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Diagnostic Steps

1
Inspect brake pads for wear and uneven wear patterns.
2
Check brake rotors for warping or damage.
3
Examine brake calipers for sticking or malfunction.
4
Verify brake fluid level and condition.
5
Scan for error codes using an OBD-II scanner to check for any electronic issues.
6
Inspect suspension components for wear, as they can affect braking feel.

Solution

1. Preparation

Tools Required: Lifting jack, jack stands, lug wrench, torque wrench, OBD-II scanner, brake cleaner, and inspection mirror.
Ensure the vehicle is parked on a level surface, and engage the parking brake. Allow the vehicle to cool if it has been driven recently.

2. Inspect Brake Pads

Sub-steps:
1. Remove the wheel using a lug wrench.
2. Visually inspect the brake pads for wear; they should not be less than 3mm thick.
3. Replace any worn or unevenly worn brake pads with new ones.
Safety Warning: Always use jack stands to support the vehicle while working underneath.

3. Check Brake Rotors

Sub-steps:
1. Inspect the brake rotors for warping or scoring using a micrometer or straightedge.
2. If warped, replace the rotors with OEM or high-quality aftermarket rotors.
3. Clean the rotor surface with brake cleaner to remove any residue before installation.
Note: If rotors are within tolerance, they may be machined instead of replaced.

4. Examine Brake Calipers

Sub-steps:
1. Inspect calipers for any signs of leakage or sticking pistons.
2. If calipers are sticking, clean and lubricate the slides or replace the caliper if necessary.
3. Ensure all caliper bolts are torqued to the manufacturer's specifications.

5. Brake Fluid Check

Sub-steps:
1. Check the brake fluid level in the reservoir; it should be between the minimum and maximum marks.
2. If low, top off with the appropriate brake fluid type (DOT 3, DOT 4, etc.).
3. Inspect fluid for contamination; replace the fluid if it appears dark or murky.

6. Final Assembly

Sub-steps:
1. Reinstall the wheel and hand-tighten the lug nuts.
2. Lower the vehicle to the ground and torque lug nuts to the manufacturer's specifications.
3. Test drive to confirm the issue has been resolved.