Vehicles equipped with 4WD, the transfer case, located at the rear of the transmission, is responsible for transferring engine torque to the front and rear wheels. The transfer case contains an input gear, countershaft and counter gear, rear output shaft, low output gear and a front output shaft (for front drive) connected and driven by a drive chain.

The transfer case gearshift control lever can be placed in four positions: 4H (direct connection with the input gear, counter gear and low output gear), N (by way of the reduction clutch sleeve located between the input gear and the low output gear) and 2H (high speed to the rear wheels only). The front drive shift fork mechanism also has an auxiliary spring to ensure a smooth shift from 4H to 2H.

You can shift from 2H to 4H or from 4H to 2H at any speed if your vehicle is going les than 60 mph (100 kph) and your wheels are straight ahead. Your front axle will engage faster if you take your foot off the accelerator pedal for a few seconds as your shift.