Sensor, Park Assist: Description: Description
Vehicles equipped with the park assist system have four park assist sensors (1) installed on the rear bumper. Only the bezel and membrane (3) of each sensor are visible through a hole in the outer vertical surface of the bumper. The remainder of each sensor including the sensor mounting bracket, the sensor spacer (also known as the O-ring or decoupling ring) and the sensor wiring connection is concealed behind the bumper. A sensor wire harness behind the bumper connects the sensors to the vehicle electrical system.
Each of the four 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 finished to match or contrast with the bezel on the outer surface of the bumper.
The numbering system for the park assist sensors allows for up to twelve sensors on the vehicle, six front and six rear. The sensors are numbered in a clockwise manner starting at the left front bumper. The left front sensor (if equipped with front park assist) is the number 1 sensor. The numbering continues in a clockwise direction around the vehicle. Since this vehicle uses only four rear sensors, sensor numbers 7 and 12 are omitted, so the left rear sensor is the number 11 sensor.
A resilient O-ring spacer (also known as a decoupling ring) around the circumference of each of the four sensor membranes (2) isolates the membrane from the opening of the bezel in the bumper (1). Each sensor is snapped into its own dedicated molded plastic bezel and mounting bracket unit. Each sensor bezel and mounting bracket unit has integral latch features that secure it on the back side of the bumper after is inserted through the mounting hole from the face of the rear bumper.
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 sensors and the bezel and mounting bracket units are each available for individual service replacement.