The automotive instrument panel system is an intelligent instrument with self-test function. It can directly receive electronic signals through wires, and is also connected with power control module, anti lock braking system and other systems through controller area network bus. Can is a high-speed communication network, so that the instrument can communicate with PCM, ABS module and automatic air conditioning module.

Through the data link socket, a channel for WDS to enter the instrument control system is established, which will improve the diagnostic ability of WDS. The instrument itself is composed of gauge, indicator and warning light. In addition, a message center is installed. When the ignition switch is turned from position 0 or position I to position II, the instrument will perform a display test to confirm that the warning light or indicator bulb and the monitoring system can work normally. The warning lights or indicator bulbs lit in this test include: ABS, airbag system, charging system, braking system, low fuel level, low oil pressure, fault indicator, frosting (Orange), icing (red), safety belt and gauge.