One common suspect is a clock spring that's coming apart. That's a wound-up ribbon cable in a plastic housing under the steering wheel. The clue will be the horn and cruise control will stop working, and the Air Bag warning light will turn on.
If the problem is down lower, have the steering and suspension systems inspected at a tire and alignment shop. That should be done at least once per year anyway with Ford products, and any time there's a new rattle or squeak. They have more trouble with critical parts separating leading to loss of control and crashes than most other brands.
Thursday, August 6th, 2015 AT 1:45 PM