DETROIT (AP) _ U.S. safety regulators are investigating complaints of power-assisted steering failure in three Ford Motor Co. midsize car models.
The National Highway Traffic Safety Administration says it found 508 complaints alleging that the cars lost power-assisted steering, causing increased steering effort.
Four complaints say the problem caused crashes.
The agency says in documents posted Monday on its website that in many cases, a warning message appeared as the failure happened. Restarting the car corrected the problem in some cases, but the problem returned in others.
The agency says it will check the scope and frequency of a problem. It could seek a recall.
Ford says it’s cooperating.