GX460 Rear View mirror operation
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CL Community Team
Joined: Sep 2009
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From: Alabama
GX460 Rear View mirror operation
On my rear view mirror pressing the power button on and off (green lit button on bottom right of mirror assembly) on my 23 GX appears to have no effect of the mirror. The reflected image does not change, I assume it should perhaps brighten or darken with button selection. The image does not change and always seems slightly dark regardless of power button being in on (green lit) or off position. Perhaps I don't understand how the mirror is supposed to work.
Anybody had a clear idea of what is supposed to happen to the rear view mirror reflected image when power button is in on versus off position?
Anybody had a clear idea of what is supposed to happen to the rear view mirror reflected image when power button is in on versus off position?
Pit Crew
Joined: May 2025
Posts: 186
Likes: 23
On my rear view mirror pressing the power button on and off (green lit button on bottom right of mirror assembly) on my 23 GX appears to have no effect of the mirror. The reflected image does not change, I assume it should perhaps brighten or darken with button selection. The image does not change and always seems slightly dark regardless of power button being in on (green lit) or off position. Perhaps I don't understand how the mirror is supposed to work.
Anybody had a clear idea of what is supposed to happen to the rear view mirror reflected image when power button is in on versus off position?
Anybody had a clear idea of what is supposed to happen to the rear view mirror reflected image when power button is in on versus off position?
Lead Lap
Joined: Mar 2015
Posts: 4,611
Likes: 372
From: In your head
Lead Lap
Joined: Nov 2013
Posts: 4,320
Likes: 1,233
From: IL
While the three buttons on the left side of the mirror are for the HomeLink, the fourth button in the middle with the green guide light is for the Electro Chromatic dimming mirrors. System compares light coming in the front of the mirror (windshield side) with light coming in the back (high beam glare side!) and dims the mirrors. Quickest way to show this is to start with the car off. Find and cover the front side sensor (small square opening on the passenger side) with a fingertip. Start the car and the mirrors will instantly dim to a dark green shade. Note the outside mirror also dims. Uncover the sensor and the mirrors will slowly clear. Legit reason to turn off the feature include backing out of a dark garage into bright sunshine. Dim mirrors may not see important obstacles.
Lead Lap
Joined: Mar 2015
Posts: 4,611
Likes: 372
From: In your head
Yup, C19-production constraints eliminated the dimming mirror on the passenger side and power folding. Then 10/20 production the power folding was brought back.
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Pit Crew
Joined: May 2025
Posts: 186
Likes: 23
okay maybe all this explains the situation on my 2020 Tundra which is a always aggravated me. Backing down by driveway after hours the side mirrors are darker I never understood that why would you want to darken the mirrors at night? So now after reading these comments, I guess because in the far distance is the light on the front of my garage. How could I change this I don't like it thanks
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