The contact owns a 2015 Toyota Tacoma. The contact stated while driving at an undisclosed speed, the contact noticed an unusual burning odor in the interior of the vehicle. The contact's wife, who was seated in the front passenger's seat, noticed a fire in the power switch area of the rear driver's door. The contact then parked the vehicle. The contact extinguished the fire with a jug of water that was in the vehicle. The vehicle was not diagnosed or repaired by an independent mechanic or dealer. The manufacturer was made aware of the failure and a case was filed. In addition, the manufacturer requested an inspection of the vehicle. The failure mileage was approximately 42,000.