Skoda Octavia NFL (2020-Present) interior lights stay on when the door is closed, how to fix?

Solution

1. Preparation

• Gather necessary tools and parts.
• Disconnect the vehicle’s battery to prevent electrical shock.
• Ensure the vehicle is parked on a level surface with the ignition off.

2. Inspect and Clean Door Switches

• Sub-steps:
  • Locate the door switches, typically found in the door frame.
  • Remove any screws or clips securing the switch.
  • Clean the switch and its housing to remove grime or debris.
  • Reinstall the switch and ensure it operates smoothly.

3. Test Door Switch Functionality

• Sub-steps:
  • Reconnect the vehicle’s battery.
  • With the door open, use a multimeter to check for continuity across the switch terminals.
  • Close the door and check if the continuity breaks, indicating the switch is functioning.
  • If the switch fails, replace it with a new component.

4. Check Wiring and Connectors

• Sub-steps:
  • Inspect the wiring harness connected to the door switch for any signs of wear or damage.
  • Use a multimeter to check for continuity along the wires.
  • Repair or replace any damaged wiring or connectors as necessary.

5. Reprogram or Replace Body Control Module (if needed)

• Sub-steps:
  • If no faults are found in the switches or wiring, consider reprogramming the BCM using a diagnostic tool.
  • If reprogramming does not resolve the issue, replace the BCM according to the manufacturer's specifications.