Active Park Assist

NOTE: Aftermarket or modified audio systems may disable necessary audible warnings.

The PAM communicates with several modules to control the functions of the active park assist system. The active park assist system utilizes steering angle inputs, vehicle wheel rotation roll count, wheel direction, active park assist sensor inputs, vehicle speed and transmission selection to calculate vehicle position and distance in relation to the parking space. The inputs are used by the PAM to command the steering system to assist with the steering wheel control to maneuver the vehicle into the parking space.

When the active park assist switch is pressed, the centerstack infotainment display displays the message "Searching for parking space on left/right side". The multifunction switch turn signal input is used to determine the side of vehicle in which the driver is searching for a parking space. If the turn signal is not selected, the active park assist system defaults to searching 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 minimum parking space length that the active park assist system identifies is approximately 1.2 times the length of the vehicle and is determined by inputs from the active park assist sensors and the wheel rotation data.

Once a parking space is located, the centerstack infotainment display displays "Parking space found on left/right side. Pull forward to park" followed by an audio system speaker chime originating from the ACM (for vehicles without Sony® audio system) or DSP (for vehicles with Sony® audio system). The operator pulls the vehicle forward and the centerstack infotainment display displays the message "Parking space found on left/right side. Stop vehicle to park". Once the operator has stopped the vehicle, the centerstack infotainment display displays the message "Remove hands from steering wheel. Shift to (R) to park on left/right side." then the message "Parking on left/right side. Back up slowly." The active park assist system takes control of the steering when the transmission is placed in REVERSE (R) and no steering wheel operator input torque is detected by the PSCM. The operator has full control of gear-shifting, the accelerator and the brake pedal.

When the vehicle has backed close to the vehicle behind, the message, "Pull forward slowly" is displayed and the active park assist system continues to control the steering as the operator moves the vehicle forward. The active park assist system may offer subsequent backward and forward maneuvers (and similar messages) before finalizing the parking sequence.

The PAM determines that the active park 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 front vehicle. The centerstack infotainment display displays the message "Active Park Assist Finished" followed by an audio system speaker chime originating from the ACM (for vehicle without Sony® audio system) or DSP (for vehicle with Sony® audio system).

Certain conditions can cause the active park assist system to incorrectly align the vehicle in the selected parking space:

A spare tire or one of the vehicles tires has significantly more or less tread wear than the other tires.
The vehicle has been equipped with various accessories (cycle rack, trailer) which are not recognized by the active park assist system.
The factory-installed tire sizes are not used on the vehicle.
Poor weather conditions such as heavy rain or snow exist.
The active park assist sensors are damaged or obstructed.
The curb along the parking space is irregular.
The vehicle or objects bordering the space are not positioned correctly. The system aligns the vehicle to the front vehicle and the driving angle when the curb is not detected.
The parking space length or parked objects position have changed after the vehicle has initially passed the parking space.
The temperature around the vehicle changes quickly such as the vehicle driven from a heated garage into the cold or just leaving a car wash before the system was used.
One of the parked vehicles has a high attachment, such as a salt spreader or moving truck bed, that the sensors cannot detect.

Pressing and releasing the active park assist switch at anytime disables the active park assist system. If the system is disabled by the operator after the system starts to control the steering, the centerstack infotainment display displays the message "Active Park Assist Cancelled" or "Active Park Assist Deactivated" followed by a warning chime.

Parallel Parking Operation

After the active park assist system is activated and the PAM has determined the driver is attempting to maneuver the vehicle into a parallel parking space (the active park assist switch is pressed once), the PAM begins searching for a parking space using the front active park assist sensors. The multifunction switch turn signal input from the SASM determines the side of the vehicle that the PAM searches for a parking space. When a side is selected with the turn signal, the PAM 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 PAM searches for 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 PAM 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 PAM, the system requests the driver to stop, shift the transmission into reverse and remove hands from the steering wheel. After the transmission is in reverse 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 and prompts the driver to begin backing into the parking space. The active park assist system sounds tones through the audio system and issues commands through the centerstack infotainment display instructing the driver to back up and pull forward as necessary while the system controls the steering to position the vehicle within the detected parking space. The operator maintains full control of the gear shifting, accelerator and brakes during active park assist maneuvers.

The PAM determines that 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 slot 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.

Parallel Park Out Assist Operation

NOTE: The parallel park out assist system is only for exiting parallel spots.

Parking out assist is available immediately after a parallel park was completed, or after an ignition on. The driver must activate the park assist system by pressing the active park assist switch once then select a side to exit the parking spot using the turn signal before the system measures the location to parallel park out of. Once the turn signal status is received from the SASM, the PAM verifies the indicated side is clear by analyzing the clearance around the vehicle using input from the active park assist sensors and the parking aid sensors. When the indicated side is clear of obstructions, the centerstack infotainment display shows a message informing the driver to remove hands from the steering wheel and shift to drive (D or S) or reverse gear, depending on the detected clearances to the front and rear of the vehicle. After the transmission is shifted and no driver input torque on the steering wheel is detected (driver has removed their hands from the wheel), the driver is prompted on the centerstack infotainment display to backup slowly in the parking spot. While backing up, the PAM sends the active park assist steering angle request to the PSCM to turn the wheels to an angle which steers the vehicle out of the parallel parking space on the desired side. When the desired steering angle is achieved, the active park assist system sounds tones through the audio system and issues commands through the centerstack infotainment display instructing the driver to pull forward and safely exit the parking spot. The driver may be prompted to shift back and forth multiple times depending on parking spot size for the system to successfully guide the vehicle out of the spot. When the driver is prompted to shift and change directions, the distance between the vehicle and a front or rear object is 35 cm (14 in).

The PAM determines that the parallel park out assist maneuvers are complete when a clear path to exit the parking space is detected. When the maneuver is complete, the centerstack infotainment display shows a message informing the driver to take control of the steering. It remains the responsibility of the driver to check for safe conditions when entering traffic from a parking space.

Perpendicular Parking Operation

After the active park assist system is activated and the PAM has determined the driver is attempting to maneuver the vehicle into a perpendicular parking space (the active park assist switch is pressed twice), the PAM begins searching for a parking space using the front active park assist sensors. The multifunction switch turn signal input from the SASM determines the side of the vehicle that the PAM searches for a parking space. If the turn signal is not active, the PAM defaults to searching 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 PAM 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 PAM, the system requests the driver to stop, shift the transmission into reverse and remove hands from the steering wheel. After the transmission is in reverse 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 and prompts the driver to begin backing into the parking space. The active park assist system sounds tones through the audio system and issues commands through the centerstack infotainment display instructing the driver to back up and pull forward as necessary while the system controls the steering to position the vehicle within the detected parking space. The rear side sensors are used to re-measure the parking spot when the vehicle is backing into the perpendicular spot to improve the measurement accuracy. The operator maintains full control of the gear shifting, accelerator and brakes during active park assist maneuvers.

The PAM determines that the perpendicular parking maneuvers are completed based on the final vehicle alignment. The perpendicular parking aid system attempts to center the vehicle between the two vehicles and align the end vehicle angle with the angle of the parked vehicles. If only one vehicle is detected, the system aligns with that vehicle at a distance of 70 to 80 cm (28 to 35 in). When the active park assist maneuver is complete, the centerstack infotainment display displays an active park assist finished message followed by an audible chime.

Parking Aid System

The active park assist system uses input from the audible parking aid system when parking the vehicle. Input from the front and rear parking aid sensors help the PAM to determine the position of the vehicle in the parking space. For more information on the operation of the operation of the audible parking aid system, Refer to: Parking Aid - System Operation and Component Description .

Active Park Assist Chimes

The active park assist system chimes are controlled by the IPC. Based on the parking aid chime request message received from the PAM, the IPC prioritizes the incoming chime request and then commands the ACM (for vehicles without Sony® audio system) or the DSP (for vehicles with Sony® audio system) to sound the chime through the audio system speakers. In the event of an audio system fault, the IPC sounds the chimes through an integral speaker. For more information on the IPC warning chimes, Refer to: Warning Chimes - System Operation and Component Description .

EPAS Control

The PSCM controls the steering during active park assist maneuvers based on the active park assist steering angle request message received from the PAM. The PSCM also provides steering column torque data to the PAM to determine if the driver has placed their hand(s) on the steering wheel while the active park assist system has control of the steering.

Active Park Assist Message Display

Active park assist messages are shown on the centerstack infotainment display. Conditions that can cause the active park assist system to be temporarily unavailable or cause the current active park assist system maneuver to be cancelled are:

NOTE: For active park assist fault messages in the infotainment display, consult the diagnosis and testing Symptom Chart: Active Park Assist .

Cancellation Event	Message Center Message/Audible Chime
Grabbing the steering wheel while the active park assist system is controlling the steering.	"Active Park Assist cancelled by driver input" followed by a chime
Vehicle speed above 29 km/h (18 mph) during measuring phase for 30 consecutive seconds.	"Reduce Speed"
Vehicle speed above 10 km/h (6 mph) when the system is controlling the steering.	"Active Park Assist cancelled by high speed" followed by a chime
Deactivation of the Advance Trac® system by the operator, or an ABS or Advance Trac® event occurs while the active park assist system has control of the steering.	"Active Park Assist cancelled by Advance Trac" or "Active Park Assist cancelled by Anti-lock Brake System event" followed by a chime
Any vehicle door (except the driver's door) or liftgate is opened when the active park assist system is controlling the steering, the operator engages drive (D) before the vehicle is far enough inside the parking space, or the system cannot follow the desired steering path.	"Active Park Assist cancelled" followed by a chime
A vehicle attachment is detected, such as a trailer or bike rack, by the reverse parking aid system.	"Active Park Assist not available" followed by a chime
Any door (except the driver's door) is ajar.	"Active Park Assist not available" followed by a chime