why does my Volkswagen Passat B8 (2015-2022) interior lights stay on when doors close

Solution

1. Preparation

• Gather tools and parts required for repair.
• Disconnect the vehicle battery to ensure safety during electrical work.
• Tools Required:
  • Screwdriver set
  • Multimeter
  • OBD-II scanner

2. Inspect Door Switches

• Remove Door Panels:
  • Use a screwdriver to remove screws securing the door panel.
  • Carefully pry off the panel using a trim tool to avoid damage.
• Test Switches:
  • Disconnect the wiring harness from the door switch.
  • Use a multimeter to check for continuity when the switch is pressed.
  • If faulty, replace the switch with a new one (Parts Required: Door switch).

3. Check Wiring and Connectors

• Inspect Wiring:
  • Look for any frayed or damaged wires within the door harness.
  • Repair or replace any damaged sections of the wiring.
• Check Connectors:
  • Ensure all connectors are securely attached and free from corrosion.
  • Clean connectors with electrical contact cleaner if needed.

4. Evaluate Lighting Control Module

• Access the Module:
  • Refer to the vehicle's service manual for the location of the lighting control module.
• Inspect for Faults:
  • Check connections and wiring for integrity.
  • If faults are detected, consider updating the module's software or replacing the module (Parts Required: Lighting control module if needed).