VEHICLE STATE MONITORING SYSTEM, AND PORTABLE TERMINAL DEVICE

In a monitoring system, when a warning lamp lights up or blinks, a DA device transmits failure data corresponding to the lighting or blinking to a portable terminal. The portable terminal, when the received failure data indicates renewed lighting or blinking, creates a message corresponding to the failure data and causes a display unit of the DA device to display the message, while transmitting the failure data to a server. Upon termination of reception of the failure data, the portable terminal transmits all of the failure data to the server.