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1997 Mercedes-Benz E290 TD Wagon
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29 Posts
Discussion Starter #1
Hey, so ever since I bought the car, the left wing mirror had this really pretty golden tint to it. I thought nothing of it, then it hit me... It's supposed to be auto dimming. So I suppose it means, mine went bad some time ago. My question would be, can this mirror's faliure affect my other mirrors aswell? Because I can't see them dimming.
Thanks.
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1982 300SD (340k miles), 1998 E300 Turbo Diesel (331k miles), 1982 300D Turbo (330k miles)
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52 Posts
My understanding is that the rearview mirror is what controls dimming. It has a light sensor in it. Does the rearview mirror dim correctly?

If not, I would start there.
 

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E250 Bluetec Sprinter250 Bluetec
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37,026 Posts
Only driver mirror is monochromatic, or whatever they call it. It has gel between double glass, who suppose to get dark when current is applied. And as Jessie said, the current is controlled by sensor mounted in ceiling mirror.
That gel either age, or leaks, what makes color change. Replacement comes with hefty price, so some members choose to replace it with normal mirror.
 

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1997 Mercedes-Benz E290 TD Wagon
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29 Posts
Discussion Starter #4
For some reason the none of them dim for me. Not even the inner.
 

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1999 E320, 2000 E320, 2003 E320 Wagon, 2005 C230K SS, 2010 Accord LX w Eibach & Koni FSD's
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3,177 Posts
For some reason the none of them dim for me. Not even the inner.
The dimming is very subtle. It eliminates headlight glare, but does not get really dark like a manual lever type mirror.
 

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1998 E320 wagon
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1,142 Posts
Are you testing the middle mirror with a flashlight during the day? There’s a forward sensor you have to block. It won’t dim if it thinks it’s daytime. At night you might have to “untest.” Have bright lights behind you then block the forward looking sensor. If the lights in the mirror get brighter still, the dimming feature is working.

My driver side mirror is permanently dimmed but evenly which I appreciate. There’s a stretch of my commute when the setting sun bounces off the mirror into my eyes. Auto dimming doesn’t work in those conditions.

Sixto
98 E320 wagon 197K miles
 

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W210 Moderator
99 E320
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5,159 Posts
mono = single, so it wouldn't be that. electrochromatic is more suitable. the light
sensor is on the lower right edge of the cabin mirror
 

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1999 E320, 2000 E320, 2003 E320 Wagon, 2005 C230K SS, 2010 Accord LX w Eibach & Koni FSD's
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3,177 Posts
 

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W210 Moderator
99 E320
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5,159 Posts
correction: I believe there are two sensors: opposing facing (front/rear) in the cabin mirror
 
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