Where is the rearview mirror heating switch on the 2021 Corolla?
2 Answers
The rearview mirror heating function on the 2021 Corolla is located in the central air conditioning control area. It is the rectangular button with wavy lines, integrated with the defogging function and does not have a separate button. Pressing the defogging button in the air conditioning area will activate the rearview mirror heating. Rearview mirror heating is particularly useful during rainy or snowy weather. When activated, the heater behind the mirror quickly warms the mirror surface, gradually removing rainwater or fog, eliminating the need for the driver to manually wipe the mirrors frequently, thereby reducing driving hazards. Rearview mirror heating function principle: After pressing the button, the electric heater behind the rearview mirror glass will rapidly heat up to a fixed temperature within a few minutes, typically between 35-60 degrees Celsius. The heat will dissipate from the left and right rearview mirrors. Simultaneously, as the temperature rises and evaporation occurs, water droplets on the mirror surface will become smaller, and fog will slowly disappear, thereby heating the mirror and removing frost. If the rain is particularly heavy, the effect may diminish and become less noticeable. Precautions for using the rearview mirror heating function: The principle of rearview mirror heating involves adding electric heating wires to the rearview mirror. These wires consume a significant amount of electricity. When using the rearview mirror heating function, ensure the car is in an ignited state. Avoid activating the rearview mirror heating function when the car is stationary to prevent draining the car battery, which could leave insufficient power to start the car. Other methods for defogging rearview mirrors include: Opening windows for convection: Crack open the side windows slightly to allow air convection between the inside and outside of the car, reducing the temperature difference and causing the fog to gradually disappear. Adjusting the car's air conditioning to the appropriate setting can use the hot air blown by the air conditioning to defog the mirrors.
The rearview mirror heating switch in the 2021 Corolla isn't a standalone button, but integrated with the rear window defogger control. You'll find this combined button featuring an icon of a foggy/rear window with wavy lines on the dashboard or steering wheel console - just press it. I was equally confused when first owning the car until trying it on a snowy day, then discovered the mirrors getting warm and defogging remarkably fast. Now it's my winter ritual to tap this button before driving, achieving clear mirrors within minutes - brilliantly convenient. This streamlined design wisely avoids cluttering the dashboard with extra buttons. Remember: it takes 1-2 minutes to activate (ensure the engine is running), and the system automatically shuts off to prevent overheating. Develop a habit of periodically inspecting mirror conditions, as aged mirror surfaces may compromise heating efficiency.
