how to fix Tesla Model 3 Highland (2024-present) that won’t turn off

Tesla Model 3 Highland (2024-present)

Error Codes

1-2 hours

Time

medium

Difficulty

high

Severity

3 min read

537 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 fix the electrical issue causing Tesla Model 3 Highland (2024-present) to not turn off. Step-by-step guide with diagnostic steps and solutions.

Affected Component

Electrical

Estimated Time

1-2 hours

⚠️ Safety Warnings

Important safety information - read before proceeding

•Ensure the vehicle is in 'Park' and on a flat surface before performing any repairs.
•Disconnect the 12V battery before handling electrical components.

Symptoms

•Vehicle remains powered on after pressing the 'Power Off' button
•Dashboard and infotainment system stay illuminated
•Unable to lock doors remotely
•Battery drain observed when the vehicle is parked
•Alerts or notifications related to 'Vehicle is Not Ready' on the screen

Diagnostic Steps

1
Verify if the vehicle is in 'Park' mode by checking the gear indicator.
2
Check the Tesla app for any notifications or alerts regarding vehicle status.
3
Perform a soft reboot of the vehicle by holding down the two scroll wheels on the steering wheel.
4
Inspect for any software updates available through the vehicle's settings.
5
Check the 12V battery status using the vehicle's diagnostics menu.
6
Look for any error messages or notifications on the vehicle’s touchscreen.

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

•Smartphone with the Tesla app
•Diagnostic tool (if available)
•Socket set

Parts Required

•New 12V battery (if replacement is necessary)

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Diagnostic Steps

1
Verify if the vehicle is in 'Park' mode by checking the gear indicator.
2
Check the Tesla app for any notifications or alerts regarding vehicle status.
3
Perform a soft reboot of the vehicle by holding down the two scroll wheels on the steering wheel.
4
Inspect for any software updates available through the vehicle's settings.
5
Check the 12V battery status using the vehicle's diagnostics menu.
6
Look for any error messages or notifications on the vehicle’s touchscreen.

Solution

1. Preparation

Ensure the vehicle is parked on a level surface and in "Park" mode.
Gather necessary tools: a smartphone with the Tesla app, and a diagnostic tool if needed.
Ensure the vehicle's software is up to date to prevent further issues.

2. Perform a Soft Reboot

Method:
- Press and hold both scroll wheels on the steering wheel until the screen goes black and the Tesla logo appears.
- Release the scroll wheels and wait for the system to reboot.
Expected Outcome: The vehicle should respond to the power-off command after rebooting.

3. Check Software Updates

Navigate to "Software" in the settings menu.
If an update is available, connect the vehicle to Wi-Fi and initiate the update.
Once completed, check if the issue persists.

4. Inspect 12V Battery

Access the diagnostics menu to check the 12V battery health.
If the battery voltage is low, prepare to replace the 12V battery.
Tools Required: Socket set, new 12V battery.

5. Replace 12V Battery (if necessary)

Disconnect the negative terminal of the 12V battery.
Remove the old battery using a socket set.
Install the new 12V battery, ensuring correct polarity.
Reconnect the negative terminal and check for the issue resolution.