ELECTRONIC CONTROL UNIT

An electronic control unit includes a first processing unit and a second processing unit. Each of the first processing unit and the second processing unit includes a processor and a rewritable storage device. Each of the first processing unit and the second processing unit is configured to perform a service by the processor executing software stored in the rewritable storage device. The electronic control unit is configured to set, during a period other than a first period during which all services performed by the first processing unit are suspendable, a second period during which all services performed by the second processing unit are suspendable.