In an embodiment a washer system includes a plurality of measurement units configured to receive data required for vehicle driving, a nozzle configured to provide a washer fluid to the measurement units, a main reservoir configured to store the washer fluid, a sub-reservoir coupled to at least one of the measurement units and configured to be supplemented with the washer fluid from the main reservoir and a controller configured to determine a priority of the measurement units and supply, in response to the priority of the measurement units, the washer fluid from the main reservoir to the sub-reservoir based on the measurement unit having a higher priority.