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BMW 3-Series (E90 E92) Forum > E90 / E92 / E93 3-series Technical Forums > Cosmetic and Lighting Modifications (exterior/interior) > Auto Dimming Mirror Retro



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      12-22-2014, 02:57 AM   #1
wildcatcrazy
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Auto Dimming Mirror Retro

I just finished installing auto dimming mirrors (rear and sides), and I'm able to get everything working except the side mirrors won't dim.

My car previously had only non-power heated mirrors, so I'm wondering if the wiring harness from the FRM needs a couple of extra wires just like the rear view mirror.

Has anyone done this retro before that can help me out?
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      12-22-2014, 04:27 AM   #2
tarux
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have you code FRM to activate it ? (there is a line in FRM for side mirror dimming, must be "active")

further ... i'm certain that you have a missing wire (a least one for each side) from FRM to side mirror , check WDS for diagram.
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      12-22-2014, 07:50 AM   #3
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did your side mirrors had memory function before ? i.e. do passenger mirror tilted down when you engage reverse ?
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      12-22-2014, 11:32 AM   #4
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Quote:
Originally Posted by ptpending
did your side mirrors had memory function before ? i.e. do passenger mirror tilted down when you engage reverse ?
Yes I had auto tilt and memory before.
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      12-22-2014, 11:34 AM   #5
wildcatcrazy
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Quote:
Originally Posted by tarux
have you code FRM to activate it ? (there is a line in FRM for side mirror dimming, must be "active")

further ... i'm certain that you have a missing wire (a least one for each side) from FRM to side mirror , check WDS for diagram.
I only remember seeing one setting in the FRM. Since my rear view is dimming correctly, I thought it was all or none when it comes to them dimming.
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      12-22-2014, 02:37 PM   #6
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Quote:
Originally Posted by wildcatcrazy View Post
Yes I had auto tilt and memory before.
you need to code frm with new option - $430
you might need to replace driver side window switch to one with power fold button, because external auto-dim feature do not installed without powerfolding
your mirrors also powerfolding now
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      12-22-2014, 03:48 PM   #7
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Quote:
Originally Posted by ptpending
Quote:
Originally Posted by wildcatcrazy View Post
Yes I had auto tilt and memory before.
you need to code frm with new option - $430
you might need to replace driver side window switch to one with power fold button, because external auto-dim feature do not installed without powerfolding
your mirrors also powerfolding now
Yes, I went from manual to power folding. They currently fold with FOB, but I haven't changed the switch yet.
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