why does my Volkswagen Golf MK7 (2015-2019) interior light stay on

Solution

1. Preparation

• Gather tools: OBD-II scanner, multimeter, screwdriver set, and a flashlight.
• Disconnect the battery to prevent electrical shorts during repairs.

2. Inspect Door Switches

• Remove the door panel for access to the door switches (specific steps may vary based on the door).
• Disconnect the wiring harness from each door switch and test with a multimeter to ensure continuity when the switch is pressed.
  • Expected Reading: Continuity should be present when the switch is engaged (pressed).
• Replace any faulty switches with new units.

3. Check Interior Light Switch

• Locate the interior light switch, usually found near the overhead console.
• Ensure the switch is set to the correct position (such as "door" or "off").
• If faulty, replace the switch.

4. Inspect Wiring and Connectors

• Visually inspect the wiring harness leading to the door switches and interior light for signs of wear, fraying, or corrosion.
• Repair or replace any damaged wiring or connectors to ensure proper connectivity.

5. Reconnect Battery and Test

• Reconnect the battery and test the interior light function by opening and closing each door.
• Verify that the interior light turns off when doors are closed properly.