All Terrain Progress Control: Notes

All Terrain Progress Control (ATPC) helps the driver to maneuver the vehicle on slippery surfaces, like ice, snow, grass, gravel, sand, mud. ATPC operates in either a forward or a reverse direction at low speeds. ATPC is useful when pulling away from a standstill, ascending or descending an incline and when driving on unstable and slippery driving surfaces.

ATPC is an all terrain low speed control function. By precisely controlling the braking and powertrain systems, the function delivers optimum traction in low grip conditions without losing traction.

The feature offers the driver a speed based control where a desired vehicle speed can be set. This allows the vehicle to travel at the set speed from the current speed or from rest. The function operates without any brake/accelerator pedal inputs being required by the driver once the brake is released, thus reducing workload, improving driveability and composure.

The system functions in the following conditions:

• Forward or reverse direction
• Minimum speed of 1.8 km/h (1.1 mph) if Low range is selected and 3.5 km/h (2.1 mph) if High range is selected
• Driver seatbelt is buckled and all the doors are closed.

ATPC can be activated at any point during the drive cycle, within its active speed range. When the system is active the switch indicator lamp is illuminated.

When first enabled ATPC will start in descent control mode.

ATPC has the following operational modes:

• Off
• Descent control mode
• Full function mode.