Where is the rearview mirror heating for the S90?

2 Answers
CollinFitz
07/28/25 2:52pm
Below is extended information about the rearview mirror heating for the S90: 1. Rearview mirror heating location: The rearview mirror heating button for the Volvo S90 is located on the air conditioning control panel and can simultaneously heat and defog the exterior rearview mirrors and the rear windshield. The icon for the rearview mirror heating button features three upward-curving arrows paired with a rectangle. 2. Function of rearview mirror heating: The rearview mirror heating function ensures clear visibility by using heating elements embedded behind the mirror to warm the surface during rainy, snowy, or foggy conditions. This feature is particularly useful in such weather, as the heating elements quickly warm the mirror, gradually removing rain or fog without the need for the driver to manually wipe the mirrors, thereby reducing driving hazards. 3. Effectiveness of rearview mirror heating: In rainy or snowy conditions, pressing the rearview mirror heating switch activates an indicator light, and the heating elements rapidly warm the mirrors to a set temperature (typically between 35-60°C) within minutes. Steam may rise from both mirrors (if the outside temperature is low), while water droplets and fog evaporate, effectively defogging and defrosting the mirrors.
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ArthurRose
08/11/25 10:41pm
I've been driving a Volvo S90 for two years now, and I was also curious about where to use the rearview mirror heating at first. Let me tell you, the method is quite simple: look for the panel on the center console near the air conditioning controls. There's a square icon with a few wavy lines—that's the rear window heating button. Pressing it not only heats the rear windshield but also automatically starts heating the exterior mirrors, making it especially useful on rainy or cold days. The mist clears up quickly, giving you more confidence while driving. Volvo designed this cleverly—integrating the function into one button saves a lot of hassle. I often press it a few minutes before heading out in the morning, and by the time I hit the road, the mirrors are clean and clear. Just be careful not to leave it on for too long to avoid overheating; the system will automatically shut off to save power. Overall, this small feature really enhances driving safety, especially in bad weather or on highways where clear visibility is crucial.
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