Sensor, Park Assist: Description
Vehicles equipped with the rear park assist system have four park assist sensors (1) installed on the rear bumper fascia. Only the membrane (3) of each sensor is visible through a hole in the outer vertical surface of the fascia. The remainder of each sensor including the sensor mounting bracket, the sensor spacer and the sensor wiring connection is concealed behind the fascia. A sensor wire harness behind the fascia connects the sensors to the vehicle electrical system.
Each of the sensors is identical in construction and is interchangeable. The electronic circuitry and a communication chip for each sensor is enclosed and protected within the molded black plastic sensor housing. The housing includes an integral connector receptacle (4) and two integral latch tabs (2). The sensor membrane extends from the surface of the sensor housing, and is either black or is finished to match the outer surface of the fascia or fascia molding.
The numbering system for the park assist sensors allows for only four sensors on this vehicle. However, the sensors are referred to as inboard, and outboard when servicing the sensors. The sensors are numbered from right to left, so the right outboard sensor is the number 1 sensor, and the left outboard sensor is the number 4 sensor.
A resilient O-ring spacer (also known as a decoupling ring) around the circumference of each of the sensor membranes isolates the membrane from the openings in the fascia or the fascia molding. Each sensor is snapped into its own dedicated molded plastic mounting bracket. Each mounting bracket is heat-staked to the inside of the fascia.
The park assist sensors cannot be adjusted or repaired. If a sensor is ineffective or damaged it must be replaced with a new unit. The sensor spacers are available for individual service replacement.