Should the rearview mirror heating be kept on continuously during rainy days?

[McHadley]

It is advisable to keep the rearview mirror heating on continuously during rainy days to prevent fogging. Below is relevant information about car rearview mirrors: Definition: The rearview mirror heating function refers to the ability of the rearview mirror to be heated via electric heating wires embedded behind the mirror when driving in rainy, snowy, or foggy weather, ensuring the mirror surface remains clear. Function: The rearview mirror is a tool that allows the driver to directly obtain external information about the rear, side, and lower parts of the car while seated in the driver's seat. For the convenience of the driver's operation, to prevent driving safety accidents, and to ensure personal safety, all countries mandate that cars must be equipped with rearview mirrors, and all rearview mirrors must be adjustable in direction.

[Kenneth]

As a car enthusiast, I've always paid attention to the usage of rearview mirror heating function. Turning it on during rainy days can quickly evaporate raindrops and improve visibility, but there's no need to keep it on continuously. Once the mirror surface dries, continued operation only wastes electricity and increases component load, potentially causing battery drain or part overheating. I recommend turning it off after 5-10 minutes of operation once the moisture evaporates. If rain persists, you can intermittently turn it on for a few minutes to avoid prolonged operation. Different car models have varying designs - some premium vehicles feature automatic shut-off functions to protect the system. Remember to check wiring connections during maintenance to prevent aging or water leakage. Proper operation can extend component lifespan, save battery consumption, and make rainy-day driving safer and more efficient.

[VonGavin]

I've been driving for ten years and often encounter rainy days. Turning on the rearview mirror heating is a must, but keeping it on all the time is unnecessary. When raindrops first fall, turning it on for a few minutes evaporates the water droplets, and then I turn it off, making the view clear. If left on continuously, the battery drains faster and can easily cause minor issues, such as a blown fuse. My experience is to turn it on during heavy rain and turn it off when the rain lightens or stops, or use it for short periods. This not only saves money but also protects the car. The button positions vary by car model, so remember to follow the manual. In any case, don’t be greedy and leave it on all the time; using it wisely is good for both the car and the driver, reducing safety risks.

[EmmaLee]

Rearview mirror heating helps you see behind in rainy weather, but doesn't need to stay on continuously. As a safe driving advocate, I believe it should be turned off once the water droplets disappear. Keeping it on wastes electricity, may accelerate component aging, and increase maintenance risks. While visibility is crucial when driving in rain, this feature is just an assist - proper on/off usage is sufficient.