TOD

Torque On Demand (TOD) is a traction-control system developed by BorgWarner that varies power distribution between the front and rear axles in response to driving conditions. In the VehiCROSS, the system is active whenever the transfer case is in high range.

System Operation
Reading inputs from a number of sensors, an electronic control unit determines an appropriate amount of power to direct to the front axle (the rear axle is always fully driven). This amount is translated into the actuation of an electromagnetic clutch unit inside the transfer case, which controls the linkage between the front and rear axles. With no clutch actuation, the power distribution is 0:100 (front:rear), and at full actuation it is 50:50.

A group of indicators in the left side of the instrument cluster provides information on the status of the TOD system, superimposed on a top-down view of the VehiCROSS driveline. An indicator reading  in the center (location of the transfer case) is lit when the transfer case is in high range and TOD is active. Indicators in the rear wheels are always lit under normal conditions. The front wheels are divided into three indicators each, which are used to show the approximate level of power to the front axle.