how to fix Tesla Model S Plaid/Refresh (2021-present) automatic emergency braking activating unexpec...

Tesla Model S Plaid/Refresh (2021-present)

Error Codes

1-2 hours

Time

medium

Difficulty

medium

Severity

3 min read

440 words

Problem Statement

Learn how to diagnose and fix unexpected automatic emergency braking in Tesla Model S Plaid. Step-by-step guide with diagnostic procedures and repair instructions.

Affected Component

Electrical

Estimated Time

1-2 hours

⚠️ Safety Warnings

Important safety information - read before proceeding

•Disconnect the battery before working on electronic systems to prevent shorts or shocks.

Symptoms

•AEB activates without any obstructions detected
•Warning message displayed on the dashboard
•Sudden deceleration caused by AEB engagement
•Inconsistent AEB performance in various driving conditions
•Check for software updates prompt on the touchscreen

Diagnostic Steps

1
Inspect the front camera and radar sensors for obstructions or dirt.
2
Check for any error codes using the Tesla service menu.
3
Verify that the AEB settings in the vehicle's software are correctly configured.
4
Ensure the vehicle's software is updated to the latest version.
5
Review logs for any patterns or specific conditions when AEB activates unexpectedly.

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

•Microfiber cloth
•Cleaning solution

Parts Required

•None specific unless sensors are damaged.

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Diagnostic Steps

1
Inspect the front camera and radar sensors for obstructions or dirt.
2
Check for any error codes using the Tesla service menu.
3
Verify that the AEB settings in the vehicle's software are correctly configured.
4
Ensure the vehicle's software is updated to the latest version.
5
Review logs for any patterns or specific conditions when AEB activates unexpectedly.

Solution

1. Preparation

Gather necessary tools and parts.
Ensure the vehicle is parked on a level surface with the parking brake engaged.
Disconnect the 12V battery for safety.

2. Clean Sensors

Sub-steps:
1. Use a soft microfiber cloth and cleaning solution to gently clean the front camera and radar sensors.
2. Ensure all lens protective covers are free of dirt, debris, or water spots.
Tools Required: Microfiber cloth, cleaning solution.

3. Update Software

Sub-steps:
1. Connect the vehicle to Wi-Fi.
2. Navigate to the software update section in the car's settings.
3. Follow on-screen prompts to install any available updates.
Tools Required: None specifically, but a stable Wi-Fi connection is necessary.

4. Reset AEB Settings

Sub-steps:
1. Access the AEB settings through the vehicle’s touchscreen.
2. Toggle the AEB function off and then back on to reset the system.
3. Confirm the settings are saved and exit the menu.
Tools Required: None.

5. Test Calibration

Sub-steps:
1. Drive the vehicle in a controlled environment to test the AEB functionality.
2. Observe the AEB activation under different speeds and conditions to ensure it operates correctly.
Tools Required: None.