Ford Motor Co. has added 32,400 Windstar minivans to two safety recalls involving undercarriage parts that can rust and break.

The National Highway Traffic Safety Administration said on its website Thursday that Ford will recall 23,000 Windstars from Virginia to fix parts near the front wheels that can break and cause drivers to lose steering control.

Ford also is recalling 9,400 Windstars in Puerto Rico because the rear axles can crack and break under repeated heavy loads.

Ford will notify owners by mail and dealers will fix the problems free of charge.

The company knows of no crashes or injuries from either the Virginia or Puerto Rico recalls, spokesman Daniel Pierce said.

Ford announced the front steering recall in January of 2010 involving 400,000 Windstars from cold-weather states where salt is used to clear ice and snow from the roads. The recall covers minivans from the 1999 to 2003 model years. Salt can cause brackets and mounts to rust and separate from the frame, causing drivers to lose steering control.

The rear axle recall was announced in August 2010 and involves more than 600,000 Windstars in the U.S. in Canada. It includes vans sold in cold-weather states from the 1998 through 2003 model years. The vans also were sold in states that use salt. Over time, the salt can cause the axles to rust, crack and even break, causing a driver to lose control.

On Wednesday, Ford added 27,000 Windstars to the rear-axle recall.