Abstract

A system displays messages one at a time to inform a vehicle operator of malfunctions or other events occurring in a vehicle with priority being given to the event of most importance whenever more than one event is sensed concurrently. A display device then selects messages for display and code switches are actuated to provide a unique electrical code signal for each message to indicate to the system which message is selected at a given moment. A number of sensors in the vehicle each respond to an event and an electrical sensor signal of unique value is provided for actuation of each sensor switch. A circuit compares the code signal with the sensor signal to drive the display device to select another message when the two signals are not in harmony and to display the selected message when the two signals are in harmony. A provision is made to render a sensor switch ineffective to affect the sensor signal when a sensor switch of higher priority is concurrently actuated.