A system for wireless transmission of vehicle data from a vehicle to a remote location, said wireless transmission system comprising: a vehicle system, such as an electronic brake system, an antilock brake system, a suspension system, a traction control system, an anti-slip regulation system, a steering system, a stability control system, an electronic stability program, an adaptive cruise control system, a diagnostics system, a trailer interface system, a transmission system, or an air management control system; a vehicle system controller; a transmitter located on said vehicle, said transmitter being adapted to wirelessly transmit data indicative of operation of said vehicle system comprising the vehicle system controller, and indicative of a geographic location of said vehicle to said remote location; at least one vehicle system component adapted to be controlled by said vehicle system controller; and a control area network connecting said vehicle system controller with said at least one vehicle system component, said vehicle system controller and said at least one vehicle system component being adapted to communicate vehicle system data between one another via said control area network; characterized in that the transmitter is connected to said control area network, said transmitter being adapted to wirelessly transmit the vehicle system data communicated over said control area network to said remote location periodically or from time to time; and in that said transmitter is adapted to operate in a first transmission mode when said system is connected to a main power supply and a second transmission mode when said system is disconnected from the main power supply, wherein the transmitter is adapted to transmit the data more often in the first transmission mode than in the second transmission mode. a vehicle system, such as an electronic brake system, an antilock brake system, a suspension system, a traction control system, an anti-slip regulation system, a steering system, a stability control system, an electronic stability program, an adaptive cruise control system, a diagnostics system, a trailer interface system, a transmission system, or an air management control system; a vehicle system controller; a transmitter located on said vehicle, said transmitter being adapted to wirelessly transmit data indicative of operation of said vehicle system comprising the vehicle system controller, and indicative of a geographic location of said vehicle to said remote location; at least one vehicle system component adapted to be controlled by said vehicle system controller; and a control area network connecting said vehicle system controller with said at least one vehicle system component, said vehicle system controller and said at least one vehicle system component being adapted to communicate vehicle system data between one another via said control area network; characterized in that the transmitter is connected to said control area network, said transmitter being adapted to wirelessly transmit the vehicle system data communicated over said control area network to said remote location periodically or from time to time; and in that said transmitter is adapted to operate in a first transmission mode when said system is connected to a main power supply and a second transmission mode when said system is disconnected from the main power supply, wherein the transmitter is adapted to transmit the data more often in the first transmission mode than in the second transmission mode.