Blower problems of the 2013 Ford Fusion

The contact owns a 2013 Ford Fusion. During weather changes, the electronic vent function failed to work each year. The dealer was not notified. An independent mechanic replaced the pig wiring, resistor, and blower motor four times, but the failure continued. The windshield failed to defrost, the vent controls failed to function for the heat, and the contact had a loss of visibility and electronic function to warm the vehicle. The manufacturer was notified of the failures. The VIN was not available. The approximate failure mileage was 45,000.