2022 Land Rover Range Rover All Terrain Progress Control (ATPC) Owners Manual

2022 Land Rover Range Rover All Terrain Progress Control (ATPC)

ALL TERRAIN PROGRESS CONTROL (ATPC) OVERVIEW

The All Terrain Progress Control (ATPC) system helps the driver to maneuver the vehicle on slippery surfaces, e.g., snow, grass, gravel, sand, or mud.

When the ATPC system is enabled, with the brake pedal fully released, the system helps to provide controlled and progressive assistance for the vehicle to:

• Maintain an automatically set low speed, for a steep descent. See DESCENT CONTROL MODE.
• Make progress and maintain a driver-selected set speed, up to a maximum of 19 mph (30 km/h). See FULL FUNCTION MODE.
• Pull away from a standstill, in a forward or reverse direction on level ground, and uphill or downhill.
• Perform low-speed maneuvering in a forward or reverse direction.

ALL TERRAIN PROGRESS CONTROL (ATPC)

To enable the ATPC system, press the ATPC button, located on the center console. The instrument panel displays a message prompting to select the set speed for the vehicle. The ATPC warning lamp illuminates to confirm selection. See ALL TERRAIN PROGRESS CONTROL (ATPC) (GREEN).

The ATPC system can be enabled when the vehicle is stationary and when the vehicle is moving. When the vehicle is stationary, apply the brake pedal to maintain control of the vehicle.

The ATPC system remains enabled for 6 hours after the ignition is switched off. After this time, ATPC has to be reselected, if the system is still required when the ignition is switched on.

Press and release the ATPC button again to disable the system. The instrument panel extinguishes the ATPC warning lamp to confirm deselection.

The ATPC system operation is influenced by the current terrain response driving program selection. For example, the grass gravel snow program requires gradual ATPC acceleration to help gain available wheel traction. The comfort program allows increased ATPC acceleration to help improve vehicle progress. See TERRAIN RESPONSE OPERATION.

USING ALL TERRAIN PROGRESS CONTROL (ATPC)

The All Terrain Progress Control (ATPC) system has two modes of operation:

• Descent control mode: Is the default setting when the ATPC system is enabled and the vehicle is stationary. See DESCENT CONTROL MODE.

  The ATPC system uses the braking system to maintain an automatically set low speed, for driving down a steep descent.

• Full function mode: Is automatically entered, when the ATPC system detects the driver has requested a higher set speed, via the operation of the steering wheel’s SET + button. See FULL FUNCTION MODE.

  The ATPC system maintains the higher set speed by using the braking system and engine torque. Full function mode should be used for all other maneuvers that require the vehicle to gain and make progress. For example, making an ascent, pulling away from a standstill, and driving on unstable and slippery driving surfaces.

The ATPC system automatically exits full function mode and reverts back to descent control mode, in the event that:

• Neutral (N) or Park (P) is selected.
• The Electric Parking Brake (EPB) is applied.
• The vehicle’s brakes are firmly applied during operation of the ATPC system.
• The vehicle is brought to a standstill via light and gentle application of the brake pedal.

In all of the previously listed events, the instrument panel displays a relevant information message.

In the event that the vehicle’s brake temperatures exceed the normal operating limits, the instrument panel displays a warning message. In this event, The ATPC system operation fades out and becomes temporarily inactive. When the brakes return to normal operating temperatures, the message extinguishes and the system resumes normal operation.

If an ATPC system fault is detected, the instrument panel displays a message indicating that ATPC is not available.

Some detected faults may allow the ATPC system to operate in descent control mode only. In this event, the instrument panel displays a message indicating that ATPC can only operate in descent control mode. Using the SET+ button increases the set speed for descent control mode. Switching the ignition off and on again may reset the ATPC system.

If a detected fault persists, consult a retailer/authorized repairer.

DESCENT CONTROL MODE

When the All Terrain Progress Control (ATPC) system enters descent control mode, the instrument panel displays a confirmation message. See ALL TERRAIN PROGRESS CONTROL (ATPC) and USING ALL TERRAIN PROGRESS CONTROL (ATPC).

Operate as follows:

1. Select the correct driving program for the current terrain. See TERRAIN RESPONSE OPERATION.
2. Select the required position for the gear selector.
3. Release the vehicle’s brakes to allow gravity to make the vehicle progress up to the descent control mode’s default speed. The currently selected terrain response driving program determines the descent control mode’s default speed. The default speed varies from a minimum of 1.1 mph (1.8 km/h) in low range and up to a maximum of 7.5 mph (12 km/h) in high range. See SELECTING HIGH AND LOW RANGE.
4. The ATPC system maintains the descent control mode’s default speed. ATPC exits descent control mode if it detects the use of the accelerator pedal or the steering wheel’s SET+ button. See ALL TERRAIN PROGRESS CONTROL (ATPC) SETTINGS.
   NOTES

   Descent control mode resumes when the accelerator pedal is released, and the steering wheel’s SET+ button is not used.

FULL FUNCTION MODE

When the All Terrain Progress Control (ATPC) system enters full function mode, the instrument panel displays a prompt message to select the desired set speed. See ALL TERRAIN PROGRESS CONTROL (ATPC) SETTINGS and USING ALL TERRAIN PROGRESS CONTROL (ATPC).