Supplemental Braking Assist

WARNING: This page is about a different car, the 2018 Lincoln MKC. However, it is still accessible from the selected car via links, so may be relevant.

The ABS module uses the HCU and hydraulic pump motor to help bring the vehicle to a safe, controlled stop during a severe braking event. The ABS module continually monitors the vehicle deceleration using messages from the RCM and PCM. If the lateral deceleration reaches a predetermined threshold, indicating a severe braking event, the ABS module activates the hydraulic pump motor in the HCU to assist with vehicle braking.

On vehicles equipped with adaptive cruise control, the CCM monitors the area forward of the vehicle. When an object enters this area and closes the distance gap set by the driver, the CCM sends either an adaptive cruise control deceleration request or a collision avoidance deceleration request to the ABS module over the HS-CAN 2. When the deceleration request message is received, the ABS module activates the hydraulic pump motor and solenoid valves in the HCU to slow the vehicle down to maintain the distance gap set by the driver. Once the distance gap set by the driver is achieved, the CCM stops sending the deceleration request message and the ABS module deactivates the hydraulic pump motor and solenoid valves in the HCU. If the CCM determines the amount of braking provided by the ABS module is insufficient, the CCM sends a forward collision avoidance braking request message to the ABS module and warns the driver, both audibly and visually, through the use of the HUD. After receiving the braking request message, the ABS module waits for brake pedal input and at that time applies maximum braking assist using the hydraulic pump motor and the HCU.

Refer to: Collision Warning and Collision Avoidance System - System Operation and Component Description . Refer to: Cruise Control - System Operation and Component Description With: Adaptive Cruise Control .