What is the design of an automotive electronic water temperature gauge?

[VanJuliet]

Utilizes the characteristic relationship between thermistor resistance and temperature changes to calculate the coolant temperature within the engine cooling system. There are two main reasons for excessively high temperatures: 1. Insufficient coolant: Coolant leakage leading to reduced levels can cause water temperature to rise. In this case, check for signs of coolant leakage. If present, repair the leaking components promptly. If no leaks are found, replenish the appropriate coolant immediately. 2. Radiator fan malfunction: A faulty radiator fan can cause water temperature to increase as heat generated during high-speed vehicle operation cannot be effectively transferred to the antifreeze, impairing heat dissipation. This leads to elevated antifreeze temperatures and potential boiling over. When encountering this situation while driving, reduce vehicle speed and check whether the fan is malfunctioning.