A method of controlling a control system for a vehicle comprising: providing at least one data communications bus; providing at least one firewall in communication with at least one data communications bus, wherein the at least one firewall creates at least two data communications bus from the at least one data communications bus; providing at least one vehicle device in communication with at least one of at least two data communications bus; providing at least one vehicle device in communication with at least one firewall; and providing at least one firewalled controller in communication with at least one firewall, wherein the firewalled controller transmits a directive to the firewall and the firewall transmits the directive through the at least two data communications bus which controls the at least one vehicle device.