How to Turn on Mirror Defrosters in a Subaru: Essential Winter Car Maintenance Tips

Are you a Subaru owner struggling to turn on your mirror defrosters? Don’t worry, you’re not alone. During the winter months, having clear vision while driving is crucial for safety, which is why it’s important to know how to activate this feature. In this article, we’ll cover everything you need to know about turning on mirror defrosters in a Subaru.

What Are Mirror Defrosters and How Do They Work?

Mirror defrosters are a common feature in newer car models, including Subarus. They work by heating the glass on your mirrors to clear away frost and condensation. This helps to ensure that you have a clear view of your surroundings while driving in cold weather conditions.

Step-by-Step Guide to Turning on Mirror Defrosters in a Subaru

Turning on the mirror defrost feature in a Subaru is a simple process:

  1. Locate the defrost button: Look for the defrost button on the dashboard of your Subaru. This button is usually labeled with an icon of a windshield with wavy lines.

  2. Press the defrost button: Press the defrost button to activate the defrosting feature. This will turn on both your front and rear defrosters, as well as your mirror defrosters.

  3. Wait for the defrosters to activate: Once you press the defrost button, give the defrosting feature a few moments to activate. You should see the indicator light turn on to let you know that the mirror defrosters are working.

  4. Check the mirrors: After a few minutes, the frost and condensation should be cleared away from your mirrors, providing you with a clear view of the road.

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Troubleshooting Tips

Sometimes, mirror defrosters may not work as expected. Here are some troubleshooting tips to help you out:

  • Check your settings: Make sure that you’ve turned on the defrost feature in your Subaru and that you haven’t inadvertently turned it off.

  • Check the temperature: If the temperature inside your car is too low, the mirror defrosters may not work properly. Make sure to turn up the heat and wait for a few minutes before trying again.

  • Inspect the mirrors: If the mirrors are dirty or damaged, this can interfere with the defrosting process. Make sure to clean them and inspect them for any damage.

Additional Tips and Information

  • Always use the mirror defrost feature when driving in cold weather conditions to ensure maximum visibility.

  • Make sure to clean your mirrors regularly to prevent dirt and debris from interfering with the defrosting process.

  • Remember to turn off the defrost feature when you no longer need it to conserve energy and extend the life of the feature.

  • In addition to using mirror defrosters, make sure to have a winter emergency kit in your car at all times in case of unexpected weather conditions.

By following these instructions and tips, you can effectively turn on your Subaru mirror defrosters and ensure clear visibility while driving during the cold winter months. Stay safe and keep your car maintenance on track.


Q: What if my mirror defrosters still aren’t working?

A: If your mirror defrosters aren’t working, consult your Subaru owner’s manual or reach out to a professional for assistance.

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Q: Are mirror defrosters only for winter use?

A: While mirror defrosters are particularly useful during colder weather conditions, they can also be used year-round to clear away condensation or fog from your mirrors.

Q: Will using the mirror defrost feature drain my car’s battery?

A: While using the mirror defrost feature does require a small amount of energy, it should not significantly drain your car’s battery.

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Peter Banks

With years of experience as a professional mechanic and Subaru specialist, Peter is one of the most respected members of our team. He's written several articles on Subaru maintenance and repair, and his advice and tips are always practical and helpful. When he's not working on cars, he enjoys cooking and trying out new recipes.

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