Where is the rearview mirror heating button on the 2021 Buick Excelle?

[LeAlaina]

The heating function for the rearview mirrors on the 2021 Buick Excelle is located on the vehicle's air conditioning control panel. It is a rectangular button featuring three curved lines with arrows from bottom to top. When the vehicle is powered on or started, simply press this button to activate the rearview mirror heating, which simultaneously turns on the rear windshield heating function. The rearview mirror heating is particularly useful in 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 and thus reducing driving hazards. Principle of the rearview mirror heating function: After rotating the button, the electric heater behind the rearview mirror glass rapidly heats up to a fixed temperature within a few minutes, typically between 35-60 degrees Celsius. The heat is then distributed across the left and right rearview mirrors. As the temperature rises and evaporation occurs, water droplets on the mirror surface become smaller, and fog gradually dissipates, effectively defrosting and demisting the mirror. However, in heavy rain, the effect may diminish and become less noticeable. Precautions for using the rearview mirror heating function: The principle of rearview mirror heating involves electric heating wires embedded in the mirrors, which consume a significant amount of power. When using this function, ensure the vehicle is running. Avoid activating the rearview mirror heating while the car is stationary to prevent draining the battery, which could leave insufficient power to start the car. Additional methods for defogging rearview mirrors include: Opening windows for air convection: Slightly open both side windows to allow air flow between the inside and outside of the car, reducing the temperature difference and gradually eliminating fog. Adjusting the car's air conditioning to the appropriate setting can also help by blowing warm air to remove fog.

[McAdeline]

I've been driving this car for a long time, and the rearview mirror heating is really practical, especially in humid weather. On the 2021 Buick Excelle, it's not a separate button but combined with the defogging function. You need to look at the center console, where there's a small button on the air conditioning control panel marked with a rear window icon, shaped like a small rectangle with curves. Pressing it activates both the rearview mirror heating and rear window defogging. I often use this during winter rains—turn it on, wait a few minutes, and the fog and frost on the mirrors disappear, instantly clearing the view and making reversing easier. When I first drove it, I thought there would be a dedicated heating button, but later I checked the manual and learned this design saves space and protects the circuit. For daily use, I recommend turning it on right after starting the car instead of fumbling while driving, which avoids distractions and improves safety. Maintenance is simple too—as long as the button works, there’s no issue. It’s a thoughtful feature.

[Alan]

The rearview mirror heating button in the 2021 Buick Excelle is cleverly hidden—it's not a standalone button but shares the defogger button. Last year, I helped a friend test this car. Simply locate the small button with the rear window symbol in the climate control panel, and pressing it accomplishes two tasks at once: heating both the rearview mirrors and the rear window. The operation is straightforward and requires no extra memorization, making it ideal for those who prefer simplicity. On rainy days, activating the mirror heating quickly clears fog, improving rear visibility and reducing accident risks. This integrated design minimizes dashboard clutter and saves energy. I usually preheat it for a few minutes in the garage before driving for better results. Regularly cleaning the button to prevent dust buildup can extend its lifespan. Overall, it's quite smart—new drivers can easily master it with a quick manual check, and it’s not overly complicated.

[DiBrady]

The rearview mirror heating button is located on the Buick Excelle's air conditioning panel. It's not a standalone button but shares a small key with the rear window defogger, marked with a rear window icon. Just press it, and the mirrors will warm up, allowing you to see the rear of the car clearly on rainy days. The position is easy to find, near the knobs, so be careful not to press the wrong button. Operation is super simple—just turn it on and wait a minute or two for it to take effect. It's suitable for all driving scenarios, especially in bad weather. Safety first.