Recently purchased a 2018 Ford Escape. After 2 weeks began to get bulb faults for trailer hookup and no trailer hooked up. The dealer finally found that a water leak from roof rack installation was running down passenger side rear panel and entering fuse panel. The leak was repaired but the problem stll exists. The steady warning is very annoying everytime I apply brakes or use turn signals. Apparently other people have had the same problem. What is the answer in order to rectify the malfunctuin?