A telematics controller comprising: a vehicle information collecting unit configured to collect vehicle information about a vehicle mounted with the telematics controller; a SIM switching unit configured to enable one of a plurality of SIM cards or SIM chips (132 - 135) to communicate; and a switching instructing unit configured to instruct the SIM switching unit to switch the SIM card or SIM chip to a SIM card or SIM chip associated in advance according to the vehicle information collected by the vehicle information collecting unit, characterized in that telematics controller includes: - the plurality of SIM cards or SIM chips (132 - 135) are configured to communicate for emergency support, - a storage unit is configured to store service area information specifying a service available area for each of the SIMcards or SIMchips (132 - 135) communicating for emergency support, and - a SIM connection condition storing unit configured to store information including priority specifying priority, a SIM communication condition, and a service start condition, for each connection SIM specifying each of the SIM cards or SIM chips (132 - 135) communicating for emergency support; wherein the switching instructing unit is configured to select a specified SIM card or SIM chip among the SIM cards or SIM chips for which a present location specified by the vehicle information is included in the service available area, said selection being based on information stored in said SIM connection condition storing unit, and to instruct the SIM switching unit to switch the SIM card or SIM chip to the specified SIM card or SIM chip. a vehicle information collecting unit configured to collect vehicle information about a vehicle mounted with the telematics controller; a SIM switching unit configured to enable one of a plurality of SIM cards or SIM chips (132 - 135) to communicate; and a switching instructing unit configured to instruct the SIM switching unit to switch the SIM card or SIM chip to a SIM card or SIM chip associated in advance according to the vehicle information collected by the vehicle information collecting unit, characterized in that telematics controller includes: - the plurality of SIM cards or SIM chips (132 - 135) are configured to communicate for emergency support, - a storage unit is configured to store service area information specifying a service available area for each of the SIMcards or SIMchips (132 - 135) communicating for emergency support, and - a SIM connection condition storing unit configured to store information including priority specifying priority, a SIM communication condition, and - the plurality of SIM cards or SIM chips (132 - 135) are configured to communicate for emergency support, - a storage unit is configured to store service area information specifying a service available area for each of the SIMcards or SIMchips (132 - 135) communicating for emergency support, and - a SIM connection condition storing unit configured to store information including priority specifying priority, a SIM communication condition, and a service start condition, for each connection SIM specifying each of the SIM cards or SIM chips (132 - 135) communicating for emergency support; wherein the switching instructing unit is configured to select a specified SIM card or SIM chip among the SIM cards or SIM chips for which a present location specified by the vehicle information is included in the service available area, said selection being based on information stored in said SIM connection condition storing unit, and to instruct the SIM switching unit to switch the SIM card or SIM chip to the specified SIM card or SIM chip.