Abstract: A security system for an automotive vehicle having an engine is operatively connected between engine running electrical components that are connected to an electrical power source and a lock switch having at least two operative positions. The security system has a lock switch operator having a memory device carried thereon with a first security code stored in the memory device. A theft control module having a memory storing a second security code is operatively connected between the switch and the engine running electrical devices. The theft control module operates to first permit the engine running electrical components to enable the starting of the engine and then to compare the first and second security codes. Before starting the engine, a counter is compared to a predetermined number so that the engine starting is limited to only a predetermined number of attempts. The engine is disabled if the number of attempts exceeds the predetermined number.

Abstract: A security system for an automotive vehicle having an engine is operatively connected between engine running electrical components that are connected to an electrical power source and a lock switch having at least two operative positions. The security system has a lock switch operator having a memory device carried thereon with a first security code stored in the memory device. A theft control module having a memory storing a second security code is operatively connected between the switch and the engine running electrical devices. The theft control module operates to first permit the engine running electrical components to enable the starting of the engine and then to compare the first and second security codes. Before starting the engine, a counter is compared to a predetermined number so that the engine starting is limited to only a predetermined number of attempts. The engine is disabled if the number of attempts exceeds the predetermined number.

Abstract: A security system for an automotive vehicle having an engine is operatively connected between engine running electrical components which are connected to an electrical power source and a lock switch having at least two operative positions. The security system has a lock switch operator having a memory device carried thereon with a first security code stored in the memory device. A theft control module having a memory storing a second security code is operatively connected between the switch and the engine running electrical devices. The theft control module operates to first permit the engine running electrical components to enable the starting of the engine and then to compare the first and second security codes. Upon finding the first security code not equal to the second security code, the engine running electrical components are disconnected from the electrical power source which disables the engine.

Abstract: A method for programming a lock to accept a key. The device will erase all the codes currently stored in the memory and program a new key value. The process requires several steps of turning the key to one of two positions when an LED is illuminated to indicate that the key must be rotated. After successful responses, all the codes currently stored are cleared and the security code of the new key is stored.

Abstract: A method for programming a spare key containing an electronic coded security code into the memory of a security system whereby a known key is inserted into the lock cylinder and the security device is triggered to read its encoded security code. If within a period of time an unknown key is inserted into the lock cylinder, the encoded security code of the unknown key is then inserted into the system memory. The new key security code becomes an additional acceptable security code to open the lock in response to receiving the first (authorized) security code.