Two problems related to defogger controls have been reported for the 2003 Ford Explorer. The most recently reported issues are listed below. Please also check out the statistics and reliability analysis of the 2003 Ford Explorer based on all problems reported for the 2003 Explorer.
Temperature control does work. Failure of blend door or evaporator assembly heat does not work and windshield defrost does blow warm air. Blend door motor or plenum box is at fault.
While driving at under 50 mph, there is a squeak that comes from the engine compartment. It sounds like a rusty suspension spring. However, this squeak is heard at exactly 35 second intervals. I found this to be associated with the air conditioner. If it is turned off, the noise goes away. The noise is present anytime the ventilation system is on. I took the automobile to courtesy Ford in poulsbo, washington. I was told that the noise was normal. I find this hard to believe. I dont think Ford would want its automobiles going down the street with an intentional loud squeak. I think this is somehow associated with what ever contorls the air handling system, such as the computer. Help me find an answer.