2012 Ford F150 Owner Guide 2nd Printing - Page 326

Driving The ELD is affected by the following conditions: • The ELD will not engage if the vehicle speed is above 20 mph (30 km/h) in 4x2, 4x4 Auto, or 4x4 High modes. • The ELD will not engage if the vehicle speed is above or 56 mph (90 km/h) in 4X4 Low. • The ELD will not engage if the accelerator pedal is pressed beyond 50% during an engagement attempt • In 4x2, 4x4 Auto, and 4x4 High modes, the ELD will automatically disengage at speeds above 25 mph (40 km/h) and will automatically reengage at speeds below 18 mph (30 km/h). • In 4L (4X4 low), the ELD will automatically disengage at speeds above 62 mph (100 km/h) and will automatically reengage at speeds below 56 mph (90 km/h). • The AdvanceTrac system has the ability to take over control of the ELD and disable it during driving maneuvers when necessary. If the required conditions for ELD activation are not met when the switch is actuated, the instrument cluster will display the appropriate information guiding the driver through the proper ELD activation process. Note: The ELD is designed for off-road use only and is not intended for use on dry pavement. Using the ELD on dry pavement will result in increased tire wear, noise and vibration. Electronic locking differential (ELD) indicator lights This light will be continuously displayed in the cluster when the ELD is active. The indicator will turn off if the ELD automatically disengages because the ELD threshold speeds are exceeded and will turn back on when the ELD automatically reengages when the ELD threshold speeds are not exceeded. CHECK LOCKING DIFFERENTIAL- Displays when an ELD fault is present 326 2012 F-150 (f12) Owners Guide, 2nd Printing USA (fus)