Assuming you have a car with this feature, turning on the side mirror defrost is simple. First, locate the switch that controls it. This is typically located on the center console near the other climate control switches. Once you've found the switch, toggle it to the on position. You should see a light come on, indicating that the feature is now active.
Now that you've turned on the side mirror defrost, you may be wondering how it works. Essentially, this feature uses a small heating element to clear any condensation or frost that has built up on your side mirrors. This is especially useful in cold weather when your mirrors are more likely to fog up. When activated, the heating element will quickly clear away any moisture, giving you a clear view of what's behind you.