Abstract: A system for remotely starting a motor of a vehicle and also capable of operating various vehicle accessories such as alarm system, door locks, door windows, trunk latch, etc. The system comprises a portable hand-held transmitter generating a command in the form of a binary coded sequence and a controller mounted in the vehicle for operating the vehicle's motor and accessories in dependence thereon. The system is characterized by a novel encoding scheme of the digitized sequence that prevents command misinterpretation by the controller, thereby avoiding an unintended avocation of the vehicle's motor or another accessory.