Parallel Parking Operation
After the active park assist system is activated and the IPMA has determined the driver is attempting to maneuver the vehicle into a parallel parking space (the active park assist switch is pressed once), the IPMA begins searching for a parking space using the front active park assist sensors. The multifunction switch turn signal input from the SCCM determines which side of the vehicle the IPMA should search for a parking space. When a side is selected the IPMA searches on that side of the vehicle until the active park assist is switched off, the ignition is cycled, or the opposite side is selected by the driver. By default, the IPMA searches for parking spots on the passenger side of the vehicle.
The system measures the available parking spaces and its surroundings as the operator drives by to determine if the vehicle can be maneuvered into the available parking space. The IPMA uses inputs from the front active park assist sensors and the wheel speed and rotation data message to find an acceptable parking space. After a space has been located, a chime is sounded through the audio system and the centerstack infotainment display shows a message informing the driver that a parking space has been located on the left or right side and requesting the driver to pull forward to park. After the driver moves the vehicle forward to the appropriate start position, as determined by the IPMA, the system requests the driver to stop, shift the transmission into neutral and remove hands from the steering wheel. After the transmission is in neutral and no driver input torque on the steering wheel is detected (driver has removed their hands from the wheel), the active park assist system takes control of the steering, acceleration and braking.
The IPMA determines the parallel parking maneuvers are completed based on the final vehicle alignment. The vehicle should be located approximately 0 to 30 cm (12 in) from the street curb if a curb is detected, otherwise the system aligns the vehicle to the spot end object. When the active park assist maneuver is complete, the centerstack infotainment display displays an active park assist finished message followed by an audible chime.