Defroster/defogger/hvac System problems of the 2014 Volkswagen Jetta

The contact owns a 2014 Volkswagen Jetta. The contact stated that the heater and the defroster were inoperable. The vehicle was taken to an independent mechanic, where the heater core was replaced; however, the failure persisted. The vehicle was taken to another independent mechanic, where it was determined that the vehicle was designed with a silica bag near the coolant reservoir, and the silica bag had ruptured, causing silica to leak into the engine compartment and to clog the heater pipe. The mechanic was able to flush out a significant amount of silica; however, the failure persisted. The contact stated that she resided in a small country area, where it was significantly cold, and the defroster and heater failure had reduced the contact's ability to see the roadway while driving in cold weather and to remain warm inside the vehicle. The dealer was notified of the failure and informed the contact that all the compromised hoses, pipes, and parts might need to be replaced; however, the vehicle was not diagnosed or repaired. The manufacturer was not notified of the failure. The failure mileage was approximately 100,000.