2009 Dodge Ram 2500 Pickup Owner Manual - Page 267

STARTING AND OPERATING 265 This electronically shifted transfer case provides five mode positions. • Two-wheel drive high range (2WD) • Four-wheel drive automatic range (4WD AUTO) • Four-wheel drive lock range (4WD LOCK) • Four-wheel drive low range (4WD LOW) • Neutral (N) This electronically shifted transfer case is designed to be driven in the two-wheel drive position (2WD) or fourwheel drive position (4WD AUTO) for normal street and highway conditions (dry hard surfaced roads). Driving the vehicle in 2WD will have greater fuel economy benefits, as the front axle is not engaged in 2WD. For variable driving conditions, the 4WD AUTO mode can be used. In this mode, the front axle is engaged, but the vehicle's power is sent to the rear wheels. Four-wheel drive will be automatically engaged when the vehicle senses a loss of traction. Because the front axle is engaged, this mode will result in lower fuel economy than the 2WD mode. When additional traction is required, the 4WD LOCK and 4WD LOW positions can be used to lock the front and rear driveshafts together and force the front and rear wheels to rotate at the same speed. This is accomplished by rotating the 4WD Control Switch to the desired position. Refer to "Shifting Procedure" for specific shifting instructions. The 4WD LOCK and 4WD LOW positions are designed for loose, slippery road surfaces only. 5