Most fitment types and adjustment types available including Electric Power Folding and New features such as Blind Spot Detection and Lane Change Assist. The side view mirror on your car serves a practical purpose beyond just helping it look its best. The side view mirror is responsible for giving you a clear view of what’s happening around the vehicle, allowing you to make good decisions when changing lanes or pulling out into traffic. If you don't get the proper replacement (and the link you gave was to a non dimming version too) then you will have only 2 of the 3 mirrors dimming when there are bright headlights behind you which might be a bit odd.

Wing Door Mirror Glass for Audi A5 2009-2012 Replacement Wing Door Mirror Glass for Audi A5 2009-2012

If you have children, they might play with the power controls on your mirror, leading it to break because of abuse. If the motor in the mirror is forced to travel beyond its limits, the glass could break. However, with all of these instances, it’s simple to replace the glass in your side view mirror with the help of some glue. Cost to Reattach a Side View Mirror Using GluePrior to installing the side view mirror, you need to remove any debris or broken parts from the housing. You may need a flathead screwdriver to get any small pieces off. However, you should never use your fingers to remove broken pieces of glass. Nobody sets out to damage the side mirror on their car, but it’s a common occurrence. If you have been the victim of a T-bone accident where the front of one vehicle crashed into the side of yours, you might be facing some damage to the mirror. However, as you can see from my pic of the current mirror, looks like there's some soldering to be done! What is that for? Auto dimming perhaps? Is an auto-dimming heated mirror realistically a whole unit replacement on error? To reattach a side view mirror with glue, you need to clean the area first. Once you clean off the area, you can apply some high-quality glue to the mirror. Place the side view mirror in the right spot. After the mirror is attached, make sure you secure it in place for at least 24 hours.

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If your original mirror glass had a heated function this will still work as the broken mirror beneath the replacement will heat through to the new mirror glass. Please note that it will take a slightly longer time to heat through to the new mirror glass

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Great thanks, pretty much what I suspected. Did a little more digging and you're absolutely right, the mirror replacements with dimming have the connections soldered in and are a LOT more expensive unfortunately. If snow, water or dew take a while to clear off the glass, the electric heating element in your wing mirror could be broken. If the mirror falls off or is damaged, you want to know how to reattach a side view mirror using glue. The fast answer to your question is quite simple, but if you need a more detailed guide, read further down in the article.