Defogger problems of the 2007 Ford Fusion

The defrosters take the air from the outside of the vehicle only. This pulls in exhaust gases during heavy traffic. Setting the control to defrost and floor only allows temporary recirculation of inside air, but the car automatically reselects the outside air after a few minutes. The only alternatives that allow continuously recirculation of inside air do not put any warm air on the windshield. When driving is stop and crawl traffic in the winter, the driver must choose between breathing exhaust gases or fogged windows. This is aggravated by the unshielded vent on the hood that draws in air from the outside and the shape of the vehicle which directs the exhaust gas laden air up over the hood to the vent. In sub zero weather, the exhaust gases tend to remain near the ground and the large windshield requires significant hot air to remain unfrosted at the top where the taller drivers need to see through. This is a continuous problem, not a one day event.

The defrosters take the air from the outside of the vehicle only. This pulls in exhaust gases during heavy traffic. Setting the control to defrost and floor only allows temporary recirculation of inside air, but the car automatically reselects the outside air after a few minutes. The only alternatives that allow continuously recirculation of inside air do not put any warm air on the windshield. When driving is stop and crawl traffic in the winter, the driver must choose between breathing exhaust gases or fogged windows. This is a continuous problem, not a one day event. This is aggravated by the unshielded vent on the hood that draws in air from the outside and the shape of the vehicle which directs the exhaust gas laden air up over the hood to the vent. In sub zero weather, the exhaust gases tend to remain near the ground and the large windshield requires significant hot air to remain unfrosted at the top where the taller drivers need to see through.