Pictorial DIY: BMW E90 HomeLink/Temp/Compass/Anti Dazzle Mirror Retrofit to E46
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07-28-2009, 12:00 AM
Join Date: Nov 2008
Location: Westchester, NY
My Ride: 330i
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Calibrating The Mirror (Part 2)
Once you see everything is working you can turn on your cabin lights to see how the mirror auto dims. Mine dimmed immediately and to my surprise it was
a Blue-ish tint dim and the not the same as the E46 original dim.
Drive around for 30 minutes or so before doing anything. I found this got the mirror warmed up as the auto dim feature seemed to have a mind of its own during the first couple of minutes it was on and the compass was stuck on NW.
After find a empty parking lot where you can do a a couple of tight circles (donuts) without drawing the attention of law enforcement. Get a dental pick or something similar where the pointed end is slightly "grippy" or "rubbery" or just rough. You will find the hole at the bottom of the mirror and fish around for what should be a small button inside the hole. My button was way in there and felt metallic and slippery. A pin and pen did not work for me even though the BMW Dealer's Manual said to use one or the other.
Once you find your button, push and hold for about 8 seconds or until a C appears. Now start doing donuts until the C becomes a direction. You can also turn on your GPS (Tom Tom Go 720 was what I have in my car) to double check. After about 3-5 minutes of circling my C became an S for south.
Now stick your dental pick in there again, find the button and hold for 3-4 seconds or until the number 8 appears. Use the BMW Dealership guide to locate your Zone Code. For New York and the Tri-State Area it is 11. Push the button to change the number and stop when it gets to your number. Mine went from 8 to 9 to 10 and to 11. After you find your number leave it alone and in about 10 seconds your direction will reappear and your mirror will be ready for use.
There is a main HOMELINK website specific for Homelink Calibration. Google for it and you should find it or I will try to post a link later on.
As you can see below my mirror also carry characters for Temperature Display. At the moment I have no idea on how to bring that feature up. But if anyone can add info I will be grateful. I will also try to update with info on this later.
You now have the
E90 BMW Premium Package in your car!
VISIT MY GARAGE TO SEE ALL MY MODS:
Last edited by delmarco; 07-28-2009 at
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