XC90 rear defrost heats your mirrors, too? Yes! I remember as a kid the frustration that came with brushing the snow off the family car during the cold and snowy Canadian winters. Back in those days, it was my job to start the car, brush off the snow, scrape the windows, turn on the heat, and get back inside before my skin turned black. Heck did we even HAVE rear defrost back then?
Somehow, I always (ALWAYS) forgot to scrape the ice off the mirrors. And I always managed to get yelled at for it.
We had to back out of a curved driveway every morning and the side-view mirrors were an absolute necessity when it came to getting out – that is, if you didn’t want to hit the house or the neighbor’s car during the process.
Flash forward to today, and I own a 2004 Volvo XC90 that does the scraping for me. In case you didn’t know, the rear defrost feature also defrosts both side mirrors at the same time. So, if you’ve ever tried to defrost, or dry condensation off, the rear window and you’ve noticed your side mirrors steaming a little – it’s just the defroster doing its job of evaporating any ice or other moisture on the mirror.
The rear/mirror defrost feature is pretty quick at doing its job, too. So don’t think that you have to start your car and let it idle for 15 minutes before you get in. In fact, you shouldn’t be idling your car for any length of time aside from the time it takes for your oil to circulate to all the areas of your engine.
On my 2004 XC90, the process of the oil circulating takes about 20 seconds. The engine starts and idles a little higher than normal for a few seconds and then it lowers to its normal idle speed. This may take a few seconds longer in winter as your oil is likely to be cold from sitting overnight (unless you park in a garage, in which case I wonder why you’ve even read this far) but the point is, this time is measured in seconds, not minutes.
Sure, adjust your mirrors, turn your heated seat on, find your station on the radio (since your 6-disc CD player doesn’t work) scan around your Volvo for any kids or other hazards, and back out/pull out and drive off.
There’s no need to idle your XC90 until it’s warmed up. It will warm up faster if you drive it right after the idle has settled down. Obviously, don’t mash the throttle to the floor during the first few miles, but there’s no reason to waste gas. You have heated seats, afterall…and clear side view mirrors, right.