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WTB Interior rear view mirror

K

kk07h3

Active Member
Messages
28
Location
Washington
Auto dimming feature quit working in mine. It only has compass and temp. No Onstar or Bluetooth.
2009 H3 adventure. If anyone has one that they would part with please let me know
KK
 
H

Humvdood

Well-Known Member
Messages
81
Location
Fort Worth
Mine stopped working too and it ended up being connected to the cruise control circuit.
Check fuse 35 if you haven't.
I put a new cruise control break switch in and my cruise control and mirror magically started working again.
no idea why it did but nothing else in the electrical components makes sense on this thing.
 
K

kk07h3

Active Member
Messages
28
Location
Washington
Humvdood- thanks for the input. I totally understand about the electrical gremlins we have to deal with.
Cruise control is working fine though.
 
deserth3

deserth3

Well-Known Member
Messages
1,078
Location
Conroe, TX
Mine stopped working because it was getting some stray voltage from the vehicle backup circuit. It was about 0.3 volts if memory serves.
This circuit turns off the auto dimming when you put the vehicle in reverse.
I just clipped the wire going to the mirror.
Sorry I don't remember which wire it was. Long time ago
 
Last edited:
K

kk07h3

Active Member
Messages
28
Location
Washington
Well guess what. The ebay purchase didn't work either. You are spot on regarding the revers override.
To make a long story short, the mirror doesn't like LED back up lamps. The drives must produce a back feed/errant voltage.
Put the original bulbs back in and I now have two mirrors hat work. Go figure.
 
deserth3

deserth3

Well-Known Member
Messages
1,078
Location
Conroe, TX
This is for my 06. Your 09 is most likely the same.
The back up wire is brown and goes to pin 9 on the connector to the mirror.
To make sure I'd pull the pin and not cut the wire. In the future you may find you need it for some word reason.
 
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