A method performed by a computing system implementing a telematics service, the method comprising: obtaining a set of telematics data for a vehicle transmitted by a telematics device over a wireless communication network, the telematics device interfacing with an on-board electronic system of the vehicle via an on-board diagnostics link; identifying, within the set of telematics data, a vehicle identifier of the vehicle and device identifier of the telematics device; updating account profile information to indicate a relationship between the vehicle identifier and the device identifier by storing the vehicle identifier and device identifier within an account profile containing the account profile information within a database system; retrieving vehicle profile information for a group of vehicles of which the vehicle is a member based on the vehicle identifier, the vehicle profile information including compatibility data for the group of vehicles with respect to a group of telematics devices of which the telematics device indicated by the device identifier is a member; responsive to the compatibility data indicating a first state, sending a deactivation message to the telematics device indicated by the device identifier over the wireless communication network, the deactivation message operable at the telematics device to deactivate at least one interaction of the telematics device with the on-board electronic system of the vehicle via the OBD link, wherein the deactivation message is operable at the telematics device to deactivate an OBD-compliant protocol layer to deactivate the interaction of the telematics device with the on-board electronic system of the vehicle via the OBD link, and updating the account profile information to indicate the deactivation of the interaction of the telematics device indicated by the device identifier; and sending the account profile information or a portion thereof to a client application operating at a client device over a wide area network. obtaining a set of telematics data for a vehicle transmitted by a telematics device over a wireless communication network, the telematics device interfacing with an on-board electronic system of the vehicle via an on-board diagnostics link; identifying, within the set of telematics data, a vehicle identifier of the vehicle and device identifier of the telematics device; updating account profile information to indicate a relationship between the vehicle identifier and the device identifier by storing the vehicle identifier and device identifier within an account profile containing the account profile information within a database system; retrieving vehicle profile information for a group of vehicles of which the vehicle is a member based on the vehicle identifier, the vehicle profile information including compatibility data for the group of vehicles with respect to a group of telematics devices of which the telematics device indicated by the device identifier is a member; responsive to the compatibility data indicating a first state, sending a deactivation message to the telematics device indicated by the device identifier over the wireless communication network, the deactivation message operable at the telematics device to deactivate at least one interaction of the telematics device with the on-board electronic system of the vehicle via the OBD link, wherein the deactivation message is operable at the telematics device to deactivate an OBD-compliant protocol layer to deactivate the interaction of the telematics device with the on-board electronic system of the vehicle via the OBD link, and updating the account profile information to indicate the deactivation of the interaction of the telematics device indicated by the device identifier; and sending the account profile information or a portion thereof to a client application operating at a client device over a wide area network. sending a deactivation message to the telematics device indicated by the device identifier over the wireless communication network, the deactivation message operable at the telematics device to deactivate at least one interaction of the telematics device with the on-board electronic system of the vehicle via the OBD link, wherein the deactivation message is operable at the telematics device to deactivate an OBD-compliant protocol layer to deactivate the interaction of the telematics device with the on-board electronic system of the vehicle via the OBD link, and updating the account profile information to indicate the deactivation of the interaction of the telematics device indicated by the device identifier; and sending the account profile information or a portion thereof to a client application operating at a client device over a wide area network.