my Tesla Model 3 Original (2017-2023) doors won't lock remotely what can I do

Tesla Model 3 Highland (2024-present)

Error Codes

30 minutes

Time

medium

Difficulty

medium

Severity

3 min read

534 words

Problem Statement

Learn how to troubleshoot and fix remote locking issues for Tesla Model 3 (2017-2023). Step-by-step guide with diagnostic steps and solutions.

Affected Component

Electrical

Estimated Time

30 minutes

⚠️ Safety Warnings

Important safety information - read before proceeding

•Ensure the vehicle is in park before performing any resets or troubleshooting.

Symptoms

•Key fob does not lock or unlock the doors remotely
•Mobile app fails to respond when attempting to lock the vehicle
•Doors can only be locked manually
•Dashboard may display a notification regarding the locking system
•Battery level of the key fob is low or dead
•Possible intermittent locking/unlocking behavior

Diagnostic Steps

1
Check the battery level of the key fob and replace it if necessary.
2
Verify that the mobile device has the Tesla app installed and is connected to the internet.
3
Attempt to lock the vehicle using the mobile app and observe any error messages.
4
Perform a soft reset of the vehicle's touchscreen by holding down both scroll wheels on the steering wheel until the screen goes black.
5
Scan for any software updates in the Tesla's settings menu and install if available.
6
Inspect the key fob for physical damage or malfunctions.

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

•Small flathead screwdriver
•Smartphone with Tesla app

Parts Required

•CR2032 battery

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Symptoms

•Key fob does not lock or unlock the doors remotely

•Mobile app fails to respond when attempting to lock the vehicle

•Doors can only be locked manually

•Dashboard may display a notification regarding the locking system

•Battery level of the key fob is low or dead

•Possible intermittent locking/unlocking behavior

Diagnostic Steps

1
Check the battery level of the key fob and replace it if necessary.
2
Verify that the mobile device has the Tesla app installed and is connected to the internet.
3
Attempt to lock the vehicle using the mobile app and observe any error messages.
4
Perform a soft reset of the vehicle's touchscreen by holding down both scroll wheels on the steering wheel until the screen goes black.
5
Scan for any software updates in the Tesla's settings menu and install if available.
6
Inspect the key fob for physical damage or malfunctions.

Solution

1. Key Fob Battery Replacement

Tools Required: Small flathead screwdriver, new CR2032 battery.
Instructions:
1. Use the flathead screwdriver to gently pry open the key fob.
2. Remove the old battery and replace it with a new CR2032 battery, ensuring the positive side is facing up.
3. Snap the key fob back together and test the remote locking function.

2. Mobile App Troubleshooting

Instructions:
1. Ensure Bluetooth is enabled on your mobile device and that it is paired with the vehicle.
2. Log out of the Tesla app and log back in to refresh the connection.
3. Uninstall and reinstall the Tesla app to ensure it is updated and functioning properly.

3. Software Update

Instructions:
1. Access the settings on the vehicle’s touchscreen.
2. Navigate to the "Software" tab and check for available updates.
3. Download and install any available software updates to ensure the locking system functions correctly.

4. Reset Vehicle Settings

Instructions:
1. With the vehicle in park, hold down both scroll wheels on the steering wheel until the touchscreen resets.
2. After the reset, test the remote locking function again.