2005 Ford F150 Owner Guide 5th Printing - Page 209

Driving If your vehicle sustains damage to the rear bumper/fascia, leaving it misaligned or bent, the sensing zone may be altered causing inaccurate measurement of obstacles or false alarms. FOUR-WHEEL DRIVE (4WD) OPERATION (IF EQUIPPED) For important information regarding safe operation of this type of vehicle, see Preparing to drive your vehicle in this chapter. Four-wheel drive (4WD) supplies power to all four wheels. 4WD should not be operated on dry pavement; driveline damage may occur. If equipped with the Electronic Shift 4WD System, and 4WD Low is selected while the vehicle is moving, the 4WD system will not engage. This is normal and should be no reason for concern. Refer to Shifting to/from 4WD Low for proper operation. System indicator lights • 4X4 HI - Momentarily illuminates when the engine is started. Illuminates when 4H is selected. • 4X4 LOW - Momentarily illuminates when the engine is started. Illuminates when 4L is selected. Using a manual 4WD system (if equipped) 4x4 HI 4x4 LOW 2H 4H N 4L 2H (2WD High) - Power to the rear wheels only; used for street and highway driving. Provides optimal smoothness and fuel economy at high speeds. 4H (4WD High) - Used for extra traction such as in snow or icy roads or in off-road situations. Not intended for use on dry pavement. 209 2005 F-150 (f12) Owners Guide (post-2002-fmt) USA (fus)