An integrated automobile keyless operation system is developed. The system consolidates the ignition key and lock/switch, security and keyless entry and other functions into one unit. The system uses a small handheld portable wireless remote controller to replace the ignition key, the door key and the trunk key. A receiver replaces the ignition switch and functions as controlling switches for door-locks and/or trunk-lock. The system incorporates the latest advancement in wireless technologies and digital-signal processing. By consolidating components, the design cuts manufacturing cost, improves reliability and offers outstanding convenience and enhanced security.