2010 Ford F150 Regular Cab Owner Guide 3rd Printing - Page 286

Driving Electronic locking differential (ELD) axle (if equipped) This axle provides added traction on slippery and/or off-road surfaces, particularly when one wheel is on a poor traction surface. In normal driving conditions the rear axle function as a standard axle. The ELD may be locked or unlocked by the vehicle operator. Refer to Four-wheel drive (4WD) operation section in this chapter for further detail on ELD function and usage. When the axle is unlocked it will function like a standard rear axle. When the axle is locked it will not allow the rear wheels to rotate at different speeds when turning. The ELD axle is not recommended for use on good traction surfaces such as dry pavement. Doing so may result in abnormal driving behavior while cornering and excessive tire wear. PREPARING TO DRIVE WARNING: Utility vehicles have a significantly higher rollover rate than other types of vehicles. WARNING: In a rollover crash, an unbelted person is significantly more likely to die than a person wearing a seat belt. Utility vehicles and trucks have larger tires and increased ground clearance, giving the vehicle a higher center of gravity than a passenger car. WARNING: Vehicles with a higher center of gravity such as utility vehicles and trucks handle differently than vehicles with a lower center of gravity. Utility vehicles and trucks are not designed for cornering at speeds as high as passenger cars any more than low-slung sports cars are designed to perform satisfactorily under off-road conditions. Avoid sharp turns, excessive speed or abrupt maneuvers in these vehicles. Failure to drive cautiously could result in an increased risk of loss of vehicle control, vehicle rollover, personal injury and death. WARNING: Loaded vehicles, with a higher center of gravity, may handle differently than unloaded vehicles. Do not overload your vehicle and use extra precautions, such as driving at slower speeds, avoiding abrupt steering changes and allowing for increased stopping distance, when driving a heavily loaded vehicle. Over-loading or loading the vehicle improperly can deteriorate handling capability and contribute to loss of vehicle control and vehicle rollover. 286