NHTSA Preliminary Evaluation PE10026

The Office of Defects Investigation (ODI) has identified 346 complaints to ODI and Ford alleging fracture, cracking and or excessive corrosion of the front subframes in model year (MY) 1999 through 2003 Ford Windstar vehicles.Approximately 97 percent of these complaints (334) involve vehicles that have been operated in Salt Belt states, which make up approximately 60 percent of the subject vehicle sales in the United States.The front subframe, sometimes referred to as the engine cradle, is a structural component of the Windstar vehicles that carries the engine, transaxle, steering rack and certain front suspension components (e.g., lower control arm).For complaints with sufficient information to identify the location of the failure, most describe problems with the rear mounting bracket for the front passenger-side lower control arm with some related to the rear body mount attachment located in the same general area of the subframe (right-rear section near the front passenger wheel).The remainder of the reports allege fracture of the front subframe at other or, most often, unspecified locations.Almost all of the complaints that specified the side of the vehicle indicated that the problem occurred on the right/passenger side (106), with only a few indicating the left/driver side (2) or both sides (3) were affected.Ford and several complainants attributed the right-side failures to the routing of the air-conditioning lines above the front subframe on that side of the vehicle, further noting that condensation has been observed dripping onto the front subframe in the area of the affected components (the A/C drain tube is also located on the right side, near the front subframe).ODI has identified 93 complaints related to lower control arm attachments, including 80 that appear to involve complete separations.All but one of these involved vehicles from Salt Belt states.All three crash incidents appear to be related to lower control arm separations, including one road depart