Abstract: The present invention consists of a system for automatically lowering power windows and unlatching power door locks of an automobile after an accident. The system is responsive immediately to a vehicle immersion condition or a vehicle fire condition. The system is responsive after a set delay to a vehicle inversion condition or a vehicle impact. A second timer deactivates the system as soon as the doors are unlocked and the windows are at least partly opened following a vehicle impact. The system is advantageous for preventing the entrapment of people in a damaged vehicle, in four of the worst life-endangering situations, without affecting the retention of these people inside the vehicle during the development of the accidents preceding these situations. A diagnostic circuit is also provided for interrogating some of the hazardous condition sensors for the purpose of periodically verifying the integrity of these sensors.

Abstract: The present invention is an electronic system for automatically rolling down power windows and unlatching power door locks of a motor vehicle in the event of an accident. The electronic system has a vehicle immersion detecting device for triggering an operation thereof. The vehicle immersion detecting device consists of a diode connected to a circuit board in a reverse biased mode. The diode has a pair of lead wires connected to the circuit board. These lead wires are usable for detecting water there-between and for triggering a vehicle immersion condition.