One problem related to ignition has been reported for the 2010 Ford F-150. The most recently reported issues are listed below. Please also check out the statistics and reliability analysis of the 2010 Ford F-150 based on all problems reported for the 2010 F-150.
The "downhill decent control fault" light comes on at random times while driving down the road. When the fault light comes on and remains on. , it also causes the brake lights on the vehicle to come on and remain on until you can the fault light decides to go off. So while driving down the road, and even worse, when in traffic, the fault light may come on and cause the brake lights on the rear of the vehicle to shine, signaling to other drivers that this vehicle is slowing or coming to a stop, when it is not. This can, in certain instances, be very dangerous. Turning the vehicle ignition off will at time alleviate the problem, but that is not always an option while driving down the road, or in traffic. The light also comes on with no warning, and with no use of the system that is indicated is faulting.