2009 Ford Expedition Owner Guide 2nd Printing (Spanish) - Page 773
2009 Ford Expedition Manual
Page 773 highlights
Driving Positions of the Control Trac system The Control Trac system functions in four modes: • 2H (2WD) delivers power to the rear wheels only. This is appropriate for normal on-road driving on dry pavement and provides best fuel economy. • 4A (4X4 AUTO) provides electronic control four-wheel drive with power delivered to all four wheels, as required, for increased traction. The RTT location in the message center will display "4X4 AUTO" when this position is selected. This mode is acceptable for all on-road driving but recommended when wet pavement, snow, or loose gravel conditions are expected. • 4H (4X4) provides electronically locked four-wheel drive power to front and rear wheels. The RTT location in the message center will display "4X4" when this position is selected. This position is not recommended for use on dry pavement. This position is only intended for severe winter or off-road conditions, such as deep snow, ice or shallow sand. • 4L (4X4 LOW) provides electronically locked four-wheel drive when extra power at reduced speeds is required. The RTT location in the message center will display "4X4 LOW" when this position is selected. This position is not recommended for use on dry pavement. Use this position for off-road low-speed operation or when extra power is required, such as climbing steep grades, going through deep sand or pulling a boat out of the water. Note: If your vehicle is equipped with AdvanceTrac with RSC, the AdvanceTrac with RSC system will automatically turn off the stability enhancement feature when you shift the Control Trac four-wheel drive system into 4L (4X4 LOW). The brake traction enhancement feature will still be enabled. The AdvanceTrac with RSC stability enhancement system can be turned off manually by pressing the AdvanceTrac with RSC button (refer to AdvanceTrac with Roll Stability Control™ (RSC) Stability Enhancement System in this chapter) while operating in 2H, 4A or 4H while driving in deep sand, very deep snow or more strenuous off-road maneuvers. This will disable the engine management feature, allowing the vehicle to maintain full power and enhanced momentum through the obstacle. 310 2009 Expedition (exd) Owners Guide, 2nd Printing USA (fus)
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