how to fix Tesla Model 3 Highland (2024-present) door lock issues

Solution

1. Preparation

• Gather tools and materials.
• Ensure the vehicle is parked safely with the ignition off.
• Disconnect the 12V battery to prevent electrical shock.

Tools Required:

• Torx screwdriver set
• Trim removal tool
• Multimeter
• Replacement door lock actuator (if needed)

2. Remove Door Panel

• Use a trim removal tool to carefully pry off the door panel clips.
• Remove any screws securing the door panel using the Torx screwdriver.
• Gently lift the door panel away from the door frame, disconnecting any electrical connectors for speakers or window switches.

3. Inspect and Replace Door Lock Actuator

• Locate the door lock actuator within the door assembly.
• Use a multimeter to test the actuator for proper voltage when the lock/unlock command is given.
• If the actuator is faulty, disconnect it from the wiring harness and remove it from the door assembly.
• Install the new actuator by reversing the removal steps and ensuring all connections are secure.

4. Reassemble Door Panel

• Reconnect any electrical connectors for the window switches and speakers.
• Align the door panel onto the door frame and press it into place, ensuring all clips are secure.
• Replace any screws removed during disassembly.

5. Reconnect Battery and Test

• Reconnect the 12V battery.
• Test the door locks using the key fob, mobile app, and manually to ensure proper operation.