my Tesla Model S Plaid/Refresh (2021-present) has a jerking motion when stopping, what's wrong?

Tesla Model S Plaid/Refresh (2021-present)

Error Codes

2-4 hours

Time

medium

Difficulty

high

Severity

3 min read

475 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 jerking motion when stopping 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 battery before working on electrical systems.
•Allow brakes to cool before inspection to avoid burns.

Symptoms

•Jerking motion during braking
•Increased stopping distance
•Unusual sounds during braking (e.g., grinding or squeaking)
•Warning lights on the dashboard (e.g., brake warning light)
•Soft or hard pedal feel when braking

Diagnostic Steps

1
Scan for error codes using an OBD-II scanner to identify any related faults.
2
Inspect brake pads and rotors for wear or damage.
3
Check the brake fluid level and condition; ensure it is within the recommended range.
4
Test the regenerative braking settings in the vehicle software.
5
Inspect the braking system's electrical connections for corrosion or damage.
6
Check for software updates that may address braking performance.

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
•Brake fluid tester

Parts Required

•Brake pads (if worn)
•Brake rotors (if damaged)
•DOT 3 or DOT 4 brake fluid

Related Faults

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Diagnostic Steps

1
Scan for error codes using an OBD-II scanner to identify any related faults.
2
Inspect brake pads and rotors for wear or damage.
3
Check the brake fluid level and condition; ensure it is within the recommended range.
4
Test the regenerative braking settings in the vehicle software.
5
Inspect the braking system's electrical connections for corrosion or damage.
6
Check for software updates that may address braking performance.

Solution

1. Preparation

Gather necessary tools and parts.
Ensure the vehicle is parked on a flat surface and powered off.
Disconnect the negative terminal of the battery to avoid electrical shorts.

2. Inspect Brake Components

Brake Pad and Rotor Check
1. Remove the wheel using a socket set.
2. Inspect brake pads for thickness (minimum 3mm recommended).
3. Check rotors for scoring or warping; replace if damaged.
Brake Fluid Check
1. Locate the brake fluid reservoir.
2. Remove the cap and check fluid level; top up with DOT 3 or DOT 4 brake fluid as necessary.

3. Adjust Regenerative Braking Settings

Software Adjustment
1. Access the vehicle settings via the touchscreen.
2. Navigate to the "Driving" section and adjust regenerative braking settings to "Standard" or "Low," depending on user preference.

4. Inspect Electrical Connections

Connection Check
1. Check the wiring harnesses connected to the brake system for signs of wear or corrosion.
2. Clean any corroded connectors and reconnect securely.

5. Software Update

Update Check
1. Connect the vehicle to Wi-Fi.
2. Go to "Software" in the settings and check for updates.
3. Install any available updates and restart the vehicle.