2001 Nissan Frontier Owner's Manual - Page 166

● Accelerating quickly from a stop after shifting from two-wheel drive to four-wheel drive may not allow engagement of the auto-locking freerunning hubs and may cause a clattering noise. Continued use of the vehicle with this noise may damage the hub lock. In such a case, release the accelerator pedal to reduce the engine speed or stop the vehicle. ● If the auto-locking hubs make a clattering noise after shifting from fourwheel drive to two-wheel drive, stop and move the vehicle in reverse gear, in a straight line, about 7 to 10 feet (2 to 3 m). ● Under extremely cold conditions [below 5°F (-15°C)], the front axle shafts may rotate even with the transfer lever in the 2H position. If this occurs, the auto-locking hubs may make a clattering noise. To avoid this, drive first in four-wheel drive to warm up the vehicle and differential gear oil. Then, shift to two-wheel drive. ● In cold weather, it may be necessary to reduce speed or stop the vehicle in order to shift from two-wheel drive to four-wheel drive. ● When shifting into or out of fourwheel drive while driving, do not stop shift lever movement midway. An incomplete shift may cause a clattering noise from the autolocking hubs. Continued use of the vehicle with this noise may damage the hub lock. Drive in four-wheel drive to stop the noise. Shift to twowheel drive as described. 5-22 Starting and driving