Symptom Chart: Active Park Assist

Condition	Possible Sources	Actions
A module does not communicate with the scan tool	Fuse Wiring, terminals or connectors Module	REFER to: Communications Network .
The active park assist system does not respond when the active park assist switch is pressed and the FDIM does not display an active park assist message	Refer to the Pinpoint Test	GO to Pinpoint Test E
The FDIM displays an Active Park Assist Fault message	Refer to the Pinpoint Test	GO to Pinpoint Test F
The FDIM displays Active Park Assist Is Not Available message	Any door (except the driver's door) or the decklid was open when the system was activated AdvanceTrac was off when the system was activated An ABS or AdvanceTrac event was in progress when the system was activated	The active park assist system is not available if any door (except the driver door) or the decklid is ajar, if the AdvanceTrac is off, if an ABS or AdvanceTrac event is in progress when the system is being activated by the driver.
	Ambient air temperature sensor calibration	If the ambient air temperature sensor has lost calibration, the Active Park Assist will be unavailable. If the battery has been disconnected or recent service actions have resulted in the replacement of any module on the network, the ambient air temperature sensor calibration may have been reset. REFER to the ENGINE CONTROLS - INTRODUCTION (EXCEPT DIESEL & HYBRID) to diagnose the ambient air temperature sensor.
The active park assist system does not position the vehicle correctly	Active park assist sensor(s) locked into the bumper incorrectly	INSTALL the parking aid sensor(s) into the parking aid sensor bezel(s) correctly.
	Dirty or iced over active park assist sensor(s)	CLEAN the bumper covers and active park assist sensors with high-pressure water.
	Active park assist sensors affected by sudden change in ambient air temperature	The temperature of the air around the vehicle can change rapidly, such as the vehicle being driven into or out of a parking garage or car wash. As a result, the air temperature displayed in the vehicle may not be close enough to the actual ambient air temperature. The active park assist system relies on accurately sensing the ambient air temperature to compensate the sensors. No action is required.
	The tires are not inflated to the correct pressure, the tires are not the same size or the tires are not the OE (original equipment) size.	INSPECT the tire condition, pressure and size. A considerably worn tire positions the vehicle far from the curb. A larger size tire positions the vehicle closer to the curb. REPAIR or REPLACE tire(s) as necessary.
	The driver allowed the vehicle to roll in the opposite direction of the transmission, such as rolling forward when the reverse gear is selected	INFORM the customer not to allow the vehicle to roll in the opposite direction when operating the active park assist system. REFER to the Owner's Literature.
	An irregular curb is present along the parking space	The system may not be able to align the vehicle to curbs that are damaged, very shallow or covered by debris. If this is the circumstance, the system aligns the vehicle relative to objects bordering the parking space.
	A vehicle or object bordering the parking space is not aligned with the parking space.	The system aligns the vehicle to the objects bordering the parking space when a curb is not detected.
	One of the parked vehicles has an elevated attachment, such as a salt spreader or moving truck bed that the sensors cannot detect	Elevated attachments may not be detected by the system.
	The parking space length or parked objects position has changed after the vehicle has passed the parking space	The system scans the parking space as the vehicle is driven by the available spaces. Therefore, the system cannot detect if the parked vehicle or objects position has changed after the parking space has been scanned. No action needs to take place at this time.
The active park assist system does not offer available parking spaces	The vehicle is being driven too close or too far from the adjacent vehicle and/or objects	The vehicle must be driven greater than 406.4 mm (16 in) and less than 1, 524 mm (60 in) from the adjacent vehicle.
	The parking space available is too small	The active park assist system only allows available parking spaces that are larger than 1.2 times the size of the vehicle. The system is operating correctly at this time.
	There may not be enough room to maneuver the vehicle into the available space	There needs to be enough space on the opposite side of the vehicle to allow the front of the vehicle to swing out as the operator backs into the space.
	An obstruction may be covering the active park assist sensor(s)	INSPECT and CLEAN the active park assist sensor(s). REMOVE any obstruction that is covering the sensor(s).