2003 Ford Expedition Owner Guide 5th Printing - Page 225
2003 Ford Expedition Manual
Page 225 highlights
Driving If equipped with the Control Trac 4x4 System, and 4L (4x4 LOW) is selected while the vehicle is moving, the system will not engage. This is normal and should be no reason for concern. Before 4L (4x4 LOW) can be engaged, the vehicle must be brought to a complete stop, the brake pedal depressed and the transmission placed in N (Neutral). The vehicle should not be operated in 4H (4x4 HIGH) or 4L (4x4 LOW) on dry pavement. Doing so could result in difficult disengagement of the transfer case, increased tire wear, decreased fuel economy and may damage driveline components. Your 4x4 features the heavy-duty Control Trac system which includes a computer-operated transfer case. This unique system is interactive with the road, continually monitoring and adjusting torque delivery to the front and rear wheels to optimize vehicle control. System indicator lights The Control Trac system indicator lights illuminate only under the following conditions. If these lights illuminate when driving in 2H or A4WD, contact your Ford dealer as soon as possible. • 4X4 HIGH - momentarily 4x4 illuminates when the vehicle is HIGH started. Illuminates when 4H is selected. • 4X4 LOW - momentarily 4x4 illuminates when the vehicle is LOW started. Illuminates when 4L is selected. Positions of the Control Trac system The Control Trac system functions in four modes: • 2H (2WD HIGH) delivers power to the rear wheels only. This is appropriate for normal on-road driving on dry pavement. • A4WD (4X4 AUTO) provides electronic control four-wheel drive with power delivered to all four wheels, as required, for increased traction. This is appropriate for all on-road driving conditions, such as dry road surfaces, wet pavement, snow or gravel. 225