why do the interior lights in my Tesla Model 3 Highland (2024-present) stay on after I close the doo...

Solution

1. Preparation

• Gather tools: Multimeter, flathead screwdriver, Torx screwdriver set, and a cleaning cloth.
• Ensure the vehicle is parked safely and powered off.
• Disconnect the 12V battery for safety before working on electrical components.

2. Inspect Door Latch Mechanisms

• Open each door and visually check the latch assembly for any debris or misalignment.
• Clean any dirt or foreign material using the cleaning cloth.
• If necessary, adjust the latch position to ensure it fully engages when the door is closed.

3. Test Door Switches

• Reconnect the 12V battery.
• Open each door one at a time and use the multimeter to test the voltage at the door switch terminals when the door is opened and closed.
• If the switch does not show a change in voltage, it may need to be replaced.

4. Check Wiring Harness

• Remove the door panel using the Torx screwdriver to access the wiring harness.
• Inspect the harness for any visible damage, fraying, or loose connections.
• Repair or replace any damaged wiring as necessary.

5. Software Configuration

• Access the vehicle settings through the touchscreen interface.
• Navigate to the 'Lights' section and confirm that the interior light settings are configured correctly.
• Reset the vehicle's software if necessary by performing a hard reboot of the touchscreen.