2017 Range Rover

USING ALL TERRAIN PROGRESS CONTROL (ATPC)

CAUTION

Do not attempt a steep descent if All Terrain Progress Control (ATPC) is not enabled, or if the message center displays warning messages.

CAUTION

The driver must maintain full control of the steering and brakes at all times.

The ATPC button is located on the center console.

Press and release the button to enable ATPC. The button's LED lamp illuminates and the message center displays a confirmation message, prompting to set the target speed for the vehicle. The instrument panel also illuminates the ATPC amber warning lamp to confirm. See ALL TERRAIN PROGRESS CONTROL (ATPC) (AMBER).

ATPC 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.

NOTES

ATPC cannot be enabled if the advanced tow assist or park assist features are currently enabled.

NOTES

The vehicle's cruise control, speed limiter, and auto stop/start systems are disabled during ATPC operation.

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

Press and release the ATPC button again to disable the system. The button's LED lamp and the ATPC warning lamp extinguish to confirm. The message center also displays an ATPC off confirmation message.

ATPC 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 general program allows increased ATPC acceleration to help improve vehicle progress.

When enabled, ATPC defaults to descent control mode, i.e., the system only limits the vehicle's downhill speed, using the brakes.

When ATPC enters in to descent control mode the message center displays the ATPC Descent Braking Only confirmation message.

Use the ATPC descent control mode when traveling down a steep descent:

  • Select the required position for the gear selector.

  • Release the vehicle's brakes to allow gravity to make the vehicle progress, up to the minimum feature speed. The minimum feature speed is 2.2 mph (3.6 km/h) with the transfer case in high range or 1.1 mph (1.8 km/h) with the transfer case in low range. See SELECTING HIGH AND LOW RANGE.

  • ATPC maintains this speed, unless ATPC detects the use of the accelerator or brake pedals, or the SET+ button on the steering wheel controls. See ALL TERRAIN PROGRESS CONTROL (ATPC) SETTINGS.

    NOTES

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

    NOTES

    If the steering wheel's SET+ button is used, ATPC enters in to full function mode.

When ATPC enters into full function mode, the message center displays the ATPC Speed Set confirmation message

NOTES

The driver’s seat belt must be buckled and all of the doors must be completely closed to enable ATPC to enter into full function mode. If these conditions are not met, the message center displays a message.

NOTES

Low traction launch is disabled when ATPC enters into full function mode. See LOW TRACTION LAUNCH.

Full function mode controls the vehicle's speed via the use of both the brakes 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.

NOTES

When the vehicle is stationary, press and hold the brake pedal while using the SET+ button.

NOTES

When the vehicle is moving, the SET+ button can be used without applying the brake pedal.

NOTES

ATPC defaults to descent control mode with the gear selector in the Neutral (N) position. In this event, the message center displays a message.

NOTES

If the vehicle's brakes are firmly applied, during operation of ATPC, the system exits full function mode and reverts to descent control mode.

NOTES

Light and gentle application of the brake pedal, during ATPC operation, lowers the vehicle's target speed. When the brake pedal is fully released, ATPC maintains the speed at which the brake pedal was released.

NOTES

The driver can override ATPC operation at any time, using the brake pedal or the accelerator pedal. The message center displays an ATPC override message.

NOTES

If the vehicle's speed exceeds 19 mph (30 km/h), ATPC operation is suspended. ATPC is then in standby mode until the vehicle's speed is less than 19 mph (30 km/h).

NOTES

If the vehicle's speed exceeds 50 mph (80 km/h), ATPC is disabled. The message center displays an ATPC off message. If required, ATPC has to be switched on again.

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

  • 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.

  • Make progress and maintain a selected target (set) speed, up to a maximum of 19 mph (30 km/h).

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

If an ATPC fault is detected, the message center displays an ATPC not available message when the ATPC button is pressed. In this event consult a retailer/authorized repairer.