Where is the rearview mirror heating switch for the Buick Excelle?

1 Answers
DiSabrina
07/29/25 6:02pm
The rearview mirror heating switch for the Buick Excelle is located on the vehicle's air conditioning control panel. The icon is rectangular in shape, featuring three curved lines with arrows from the bottom to the top. When the vehicle is powered on or started, simply press the button to activate the rearview mirror heating function, which simultaneously turns on the rear window defroster. The rearview mirror heating function is particularly useful during rainy or snowy weather. When activated, the heater behind the mirror quickly warms the surface, gradually removing rain or fog from the mirror, eliminating the need for frequent manual wiping by the driver and reducing driving hazards. How 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, as the driver's side has a control 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 within a few minutes, typically between 35-60 degrees Celsius. Heat will dissipate from both left and right rearview mirrors. At the same time, as the temperature rises and evaporation occurs, water droplets on the mirror surface will gradually shrink, and fog will slowly disappear, effectively defrosting and de-fogging the mirror. However, 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 mirror. These wires consume a significant amount of electricity. When using the rearview mirror heating function, ensure the vehicle is running. Avoid activating the function while the car is stationary to prevent draining the battery, which could leave insufficient power to start the vehicle. Other methods for defogging rearview mirrors include: Opening windows for air circulation: Crack open both side windows slightly to allow air exchange 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 defog the mirrors.
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