The contact owns a 2021 Toyota Rav4. The contact stated that while driving at an undisclosed speed, the rear passenger’s side door made an abnormal sloshing sound. Upon inspection, the contact discovered water inside the door. The contact unplugged the rubber seal under the rear passenger door to release the water. The contact was concerned about corrosion of the door and an electrical system failure. The vehicle was not diagnosed or repaired by an independent mechanic or the dealer. The manufacturer was not made aware of the failure. The failure mileage was approximately 56,000.