Abstract: A remote starter system for a vehicle having an electronic ignition module connected to vehicle controller modules by a serial data interface. The electronic ignition module is capable of receiving at least one keycode from a cryptographic controller vehicle key for verification before changing the state of at least one vehicle controller module. The remote starter system is defined in one embodiment to include a remote starter module having at least a memory for storing at least one keycode and having the ability to send the at least one keycode for verification and the ability to request modification of a state of at least one vehicle controller module. Wherein when the at least one keycode is verified, the state of at least one vehicle controller module is modified as requested by the remote starter module.

Abstract: In one embodiment there is a remote starter system for a vehicle having an ignition connected to vehicle controllers by a serial data interface. The remote starter system includes a T-Harness connector having at least a first, second, and third serial data connectors and a remote starter module. The remote starter module having at least a remote starter connector, wherein the first serial data connector of the T-Harness connector is coupled to the remote starter connector, and the second and third serial data connectors are separately coupled between the pair of interconnected vehicle serial data connectors. Data from the remote starter module is thereby communicated to the vehicle controller modules and the ignition module.