I have a 2013 Sprinter and it has at least 2 major water leaks when it rains which were identified by the dealer. The first one is the radio aerial which has caused the Overhead Control panel w/ATA and Rain Sensor to short out. The second is the brake light above the rear doors. Has anyone had similar leaks. being on a fixed income I am trying to find ways to fix the leaks myself or at least get help to do it as opposed to trying to find $1600.00 to fix the leaks and the Control panel.