Before working on the Parking Assist Distance Sensor, disconnect and separate the battery's negative cable. After that, take off the relevant
Bumper from your car, whether it's the front bumper or the rear one. From the back of the bumper, take out the connector attached to the wire harness from the parking assist distance sensor receptacle. Pull the strap out of the upper and lower latch spots on the sensor's bumper receptacle. Remove the sensor and the O-ring from the receptacle all at once.