The United States National Highway Traffic Safety Administration is investigating steering problems in about 500,000 Ford cars.
The investigation covers 2004 to 2007 Crown Victoria, Grand Marquis and Marauder models. The administration says a heat shield in the car can rust, dislodge, and cause the steering shaft to jam. It has received five complaints and knows of one injury. In that case, the steering froze as a driver entered a highway entrance ramp, causing the car to roll. Ford says it will co-operate with the NHTSA on the investigation.