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Old 07-13-2021, 10:49 AM
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RocketyMan RocketyMan is offline
Join Date: Jan 2020
Location: PNW
Posts: 451
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Originally Posted by andrewwynn View Post
It dims the mirror by tilting to the glass vs. silver. The key is: with auto dim there is no day/night mode so the clown nose does not twist.

I'm not aware of a way to manually override the auto dim.
You can test your auto-dim of your center rear view mirror by driving out in a bright day and putting your hand in front of the optical sensor of the front of the mirror. This should be on the right, front, side of the mirror while sitting in the driver's seat, facing forward.

You can also check it in the night time to activate the dimming feature by shining a light at the mirror portion, or the back side of the mirror.

Do note, that window tint will have an effect on this feature.
2003 BMW X5 3.0i -- MT5, 3.64s final gears, H&R lowering springs, K-Mac bushing kit
2007 BMW X3 3.0Si -- MT6
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