Parking radar system without host and control method

The invention discloses a parking radar system without a host and a control method. The parking radar system without a host includes a plurality of sensors, wherein each sensor unit can be independently used as a main sensor so as to coordinate other sensors as slave sensors, and controls the work sequence of each slave sensor; and each sensor unit is independent in connection with and in communication with a vehicle bus module and/or a buzzer. Through arrangement of the plurality of sensors with the same structure, each sensor can be used as the main sensor, and the function of the parking radar system without the host is shown better, and more importantly, the function integrity and reliability of the parking radar system are ensured.