| 摘要 |
PROBLEM TO BE SOLVED: To suppress battery consumption, and to improve a possibility of arrival to a destination.SOLUTION: This on-vehicle unit 1 to which a supply voltage is supplied from a battery 24 includes: a battery residual quantity management part 22 for detecting a battery residual quantity (battery voltage) of the battery 24; a plurality of processing parts (display parts 12-RAM21) for executing processing of data for route guide to the destination; and a control part 11 for executing a control mode (MODE B or MODE C) for stopping supply of the supply voltage to some processing part (a display part 12, an operation part 13) of the plurality of processing parts, when the battery voltage detected by the battery residual quantity management part 22 is lower than a prescribed reference residual quantity value (11.5 V or 11.0 V). |
