Principles of Operation

WARNING: This page is about a different variant/trim than selected.

The 4WD system is active all the time and requires no input from the driver. The 4WD system continuously monitors vehicle conditions and automatically applies torque to the front wheels when conditions or a drive mode selection commands it. During normal operation, torque is always applied to the rear drive axle. If wheel slip is detected the vehicle is under heavy acceleration or if the vehicle is in a handling event, the 4WD system commands the transfer case actuator motor to apply torque to the ball ramp and clutch, and provide 4WD torque distribution to both the front and rear axles.

The 4WD system uses a single speed automatically activating transfer case. When torque is required at the front axle, the transfer case motor applies torque to a ball ramp activated high capacity clutch pack, allowing torque from the input shaft to be provided to both the rear driveshaft output flange, and the front axle output shaft via a chain drive. Torque is always provided to the rear wheels via the rear driveshaft, rear differential and driveshafts. Torque (when commanded) is provided to the front wheels via the front driveshaft, front differential side gear and the intermediate shaft.

Drive Mode Control

NOTE: Drive mode changes may not be available when the ignition is off or when the engine is not running.

The system delivers a driving experience through a suite of sophisticated electronic vehicle systems. These systems optimize steering, handling and powertrain response. This provides a single location to control the performance settings of multiple systems.

Drive Mode Control (if equipped)

Changing the drive mode automatically changes the functionality of the following systems:

EPAS system adjusts steering effort and feel based on the mode you select.

ESC and traction control maintain your vehicle control in adverse conditions or high performance driving.

Electronic throttle control enhances the powertrain response to your driving inputs.

Transmission controls become optimized with shift cycles tuned to each mode.

4WD settings are optimized and tuned to each mode.

Drive mode selection is made through the drive mode switch. For center console mounted drive mode switch, the switch is integral to the ATCM. For column shift stalk mounted drive mode switch, the mode selection is made using the drive mode button underneath the information display.