| 摘要 |
PROBLEM TO BE SOLVED: To improve responsiveness in collation to be performed by an onboard unit that performs two collations of smart collation and transponder collation.SOLUTION: In a memory of an onboard unit (collation ECU), a key list 30 in which key IDs of registered electronic keys are contained is stored. The key IDs in the key list 30 are associated with collation success orders that get higher for the electronic keys relating to past collation success times that are newer. In the key list 30, the battery states of the respective electronic keys are contained. When the collation ECU performs smart collation, the collation ECU switches the key IDs in the key list 30 so that the electronic keys whose batteries have energy are given higher orders than the electronic keys whose batteries have no energy. When transponder collation is performed, the key IDs in the key list 30 are switched so that the electronic keys whose batteries have no energy are given higher orders than the electronic keys whose batteries have energy. The collation ECU performs collation according to the switched orders. |
