A vehicle security system includes a transmitter to be carried by a user, and a controller at the vehicle for performing at least one vehicle function responsive to the transmitter. The controller is switchable among a plurality of modes, including a transmitter learning mode and a feature programming...http://www.google.ca/patents/US6366198?utm_source=gb-gplus-sharePatent US6366198 - Vehicle security system having transmitter learning and feature programming based on a single-digit user code and related methods
