What is the Principle of Rearview Mirror Heating?

1 Answers
Janelle
07/30/25 3:19am
Rearview mirror heating principle: An electric heating element (heating film) is installed inside the mirror lenses on both sides. During rainy or snowy weather, activating the rearview mirror heating function causes the heating element to rapidly reach a set temperature within minutes, typically between 35 to 60 degrees Celsius, thereby heating the mirror surface to remove fog and frost. There are generally two methods to activate the rearview mirror heating function: one combines with the electric mirror adjustment control, where simply rotating the knob turns it on; the other is located on the air conditioning control panel, where pressing the heating button activates it. The knob-style activation is more commonly found in German cars, while the button-style is more typical in Japanese and American vehicles.
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