How to Turn On the Rearview Mirror Heating in a Car?
2 Answers
To turn on the rearview mirror heating in a car, follow these steps: 1. Locate the knob on the left front side of the driver's door; 2. Adjust the knob to the desired position (l, o, r, or the heating symbol). The function of rearview mirror heating is to warm the mirror surface, effectively removing fog and frost, ensuring clear visibility and enhancing driving safety. The principle behind rearview mirror heating involves installing heating elements (electric heating plates or films) inside the mirror lenses. In rainy or snowy conditions, activating the rearview mirror heating function causes the heating elements to rapidly warm up to 35-60 degrees Celsius within minutes, thereby defogging and defrosting the mirrors.
As an average car owner, I frequently use the heated mirror function during rainy or cold weather because it quickly clears fog, frost, and snow, ensuring clear visibility. The activation method is simple: first start the vehicle, then locate the button on the dashboard or climate control panel—usually marked with a wavy line or mirror icon—and press it once to turn it on. An indicator light will illuminate to confirm operation. I recommend not leaving it on for extended periods; 5-10 minutes per use is sufficient to prevent overheating damage to the mirrors. In most car models, this button is integrated with the rear window defroster, taking effect within about one or two minutes after activation, which is very convenient. Turn it on in advance when driving in rain to avoid accident risks. Remember to check if your car has this feature—if not, consider installing aftermarket accessories.
