Mazda Door Ajar Light Stays On

Suggested Repair

With the vehicle running and the doors closed, wiggle each door to see which one turns the door-ajar and interior lights on. The interior light switch is in the latch; replace the latch that triggers the lights.

Conversation Summary

The owner reports that the door-ajar light and interior lights come on intermittently on a Mazda even when all doors and the rear door or window are securely latched. Dealership visits found nothing because the lights were acting normally then. The expert says a failing door latch is a common cause and recommends wiggling each closed door with the car running to identify which latch switch triggers the lights, then replacing that latch.