A vehicle includes a plurality of controllers, a database in which priorities for switching to inactivation of the plurality of controllers are stored, and a main controller configured to identify whether a key of the vehicle is in off state, when the key of the vehicle is identified to be in off state, identify a communication state of the vehicle, when at least one communication state is identified among a first communication state, a second communication state, and a third communication state, select a controller corresponding to the identified communication state from the plurality of controllers, based on the identified communication state and the priorities stored in the database, the first communication state in which an active sate of communication being maintained due to a controller in error, the second communication state in which the active sate and an inactive state of communication being repeated due to the controller in error, the third communication state in which the active sate of communication being maintained due to a noise signal, and reset or cut off a power of the controller.