Where is the rearview mirror heating in the Buick Verano?
3 Answers
The rearview mirror heating switch in the Buick Verano is located directly above the air conditioning fan speed knob. This switch is labeled "rear." When turned on, it activates heating for both the upper and lower rearview mirrors as well as the rear window defroster. A yellow light indicates that the heating is on, while the light turning off means the heating is deactivated. Heating function automatically turns off after a while. Rearview mirror heating is particularly useful during rainy or snowy weather. When activated, the heater behind the mirror quickly warms the surface, gradually removing rain or fog, eliminating the need for the driver to manually wipe the mirrors frequently, thus reducing driving hazards. Methods to use the rearview mirror heating function: There are generally two ways to activate the rearview mirror heating function. One is combined with the electric rearview mirror adjustment button—simply rotate the knob to turn it on. The other is located on the air conditioning control panel—press the heating button to activate it. No manual angle adjustment is needed; the driver's side has a dedicated adjustment button. Principle of the rearview mirror heating function: After pressing the button, the electric heater behind the rearview mirror glass rapidly heats up to a fixed temperature (usually between 35-60°C) within minutes. Heat is then distributed across the left and right mirrors. As the temperature rises, water droplets on the mirror surface gradually shrink, and fog slowly dissipates, effectively defrosting the mirrors. However, in heavy rain, the effect may diminish and become less noticeable. Precautions for using the rearview mirror heating function: The heating function works by embedding electric heating wires in the rearview mirror, which consume significant power. Ensure the vehicle is running when using this feature to avoid draining the car battery, which could prevent the car from starting. Other methods to defog rearview mirrors include: Opening windows slightly: Creating a gap in the side windows allows air convection between the inside and outside of the car, reducing temperature differences and gradually eliminating fog. Using car air conditioning: Adjust the car's air conditioning to the appropriate setting to blow warm air for defogging.
I've been driving the Verano for over a decade, and the rearview mirror heating switch is located on the central control air conditioning panel. Look for the button with a rectangle and three upward arrows—press it, and when the indicator light comes on, it's activated. This feature is especially useful in cold or rainy weather; within three to four minutes of turning it on, the moisture on the mirror surface disappears. However, remember that it's separate from the front windshield defogger—sometimes during rain, I turn both on. Also, a reminder: it only works when the car is running and automatically deactivates during high summer temperatures to avoid wasting electricity. The heating wires are embedded inside the mirror glass, so if it stops working, don't force it—it might be a blown fuse or poor wiring contact.
I rely on the rearview mirror heating every time I drive in the rain. The heating button in the Verano is located on the left side of the air conditioning control area—it's a rectangular icon with a curved arrow. Just press it after starting the engine, and the light will turn on, indicating it's working. The operation is super simple. It's best to use it when the temperature is low, as the effect isn't as noticeable in hot weather. Once during a snowy winter, I drove it, and the snow melted in about ten minutes. However, remember not to keep it on for too long—it automatically turns off after half an hour at most. If pressing it doesn't work, first check if the air control panel indicator lights up, then inspect the F23 fuse in the fuse box.
