The auto dimming will darken the mirror automatically when the cars behind you or on the side is too bright or with high bean as well as cars from opposite direction with to bright headlight or high bean. It will then clears back to normal when the brightness reduce from cars in front or behind automatically.
Dealership will cost over a hundred dollars just for the mirror + time of installation. It is easy to remove and mount the new one on yourself without the technician.
Good Luck and thanks for looking.... I describe all items accurately and to the best of my knowledge. When possible I list the exact vehicle the part came from. I use the Hollander catalog to determine what other vehicles the part should fit, but I cannot be held responsible for its content.You are responsible to determine if the part will fit your vehicle by checking with a dealer or other means. The item "GENTEX FACTORY OEM Auto Dim Rear View Mirror with LCD BACKUP CAMERA DISPLAY" is in sale since Saturday, April 20, 2019. This item is in the category "eBay Motors\Parts & Accessories\Car & Truck Parts\Interior\Mirrors". The seller is "auctiondealonline" and is located in Sunnyvale, California. This item can be shipped worldwide.