Abstract: A vehicle security system including a remote control communicating with the system via an RF link for remotely arming and/or disarming the system. Modes of system operation include an armed mode in which sensor outputs are monitored for intrusion indicating conditions and an RF receiver is monitored for remote commands, an alarm mode in which a siren is sounded in response to a detection of an intrusion indicating condition during the armed mode, a disarmed mode in which sensor monitoring for intrusion conditions is disabled, a programming mode in which features of the system are programmable, a valet mode in which only selected sensor outputs are monitored, and a pre-arming mode following system disarming and prior to passive arming, in which the door switch is monitored. A display facilitates programming by providing an indication of the present position within the programming sequence.

Abstract: A vehicle sensing system includes a data bus, a first microprocessor coupled to the bus and a plurality of sensor modules about a vehicle periphery for detecting the presence of objects within a predetermined range of distances of each of such sensor modules. Each sensor module of the vehicle sensing system includes a transducer, a second microprocessor, coupled between the transducer and the bus, for processing information received from the transducer, and a light emitting diode disposed on an outer surface of a housing for the transducer, coupled to the second microprocessor, for indicating when an object is within the predetermined distance of the sensor module or when the sensor module is faulty. Each sensor module further includes a temperature sensing circuit coupled to the second microprocessor and a bus transceiver for receiving information from the bus and for transmitting information to the bus.