Which Button is the Rearview Mirror Heater Switch?
3 Answers
The rearview mirror heating button icon is shaped like three upward-curving arrows inside a square frame. There are generally two designs: one is integrated with the electric rearview mirror adjustment combination switch, and the other is located on the air conditioning control panel. Principle of rearview mirror heating: Heating elements (electric heating films) are installed inside the mirror lenses on both sides. In rainy or snowy weather, when the driver activates the rearview mirror heating function, the heating elements quickly warm up to a fixed temperature within a few minutes, typically between 35-60 degrees Celsius, thereby heating the mirrors to remove fog and frost. Rearview mirror heating switch: Knob-type switch: On the driver's side door, there is a knob at the front left with several symbols: L, 0, R, and a heating symbol. The heating symbol, shaped like three upward-curving arrows inside a square frame, is the rearview mirror heating switch. Turning the knob to the heating symbol activates the rearview mirror heating function. Button-type switch: On the control panel, the button is shaped like three upward-curving arrows inside a square frame. Pressing the button activates the rearview mirror heating function.
Oh, that rearview mirror heating switch? I've been driving for so many years and use this feature frequently. It's usually the same button as the rear window defroster. The icon shows a rectangular frame with wavy or diagonal lines, resembling a heating symbol, typically located near the center console or door panel. Press it, and when the red light turns on, it activates—within a few minutes, the mirror surface heats up to clear rain or fog. It's especially useful in rain or snow, improving visibility for safer driving. If you can't find it, check the owner's manual or search online for a diagram of your car model. Some newer cars have compact designs, and the button might be hidden in a menu. Just remember not to accidentally press other switches like the AC button to avoid wasting power. For daily maintenance, keeping the rearview mirror clean enhances its effectiveness. I always turn it on before heading out in winter—saves a lot of time. Safety first—this little feature can be a lifesaver in critical moments.
Veteran drivers talk about the rearview mirror heating button, which is often placed together with the rear window defogger button. The icon features wavy lines or slash patterns, making it easily recognizable on the dashboard or door control panel. Press the button, and the indicator light turns on. The mirror slowly heats up to melt ice, snow, or water droplets, usually taking just a few minutes. This feature is a lifesaver during rainy or foggy highway drives, ensuring clear visibility and preventing rear-end collisions. There are significant differences between car models—domestic vehicles may integrate it into the AC panel, while imported cars often have it as a standalone button. Though highly practical, it’s easily overlooked. If unresponsive, check the fuse. Pre-warm the mirrors before winter drives and avoid operating while driving at high speeds. For safety, keeping the mirrors clean improves heating efficiency. Make it a habit to use it correctly to avoid misoperation and ensure safety.
