ok, i thought i update this thread since i have some new information. my trip to ingolstadt a couple of weeks ago was helpful in getting some part numbers for a possible front retrofit for the front parking sensors. it appears that the central electric control module 9 in the b8.5 may already already have the capability of front pdc...but more about that later when i have some time to write up my findings. i've also spoken to andy at ross-tech for some advice on coding but they don't have the updated label files yet for the front camera retrofit on our B8.5's.
my other alternative was to retrofit a cheap $12 back up camera and use the audi video ami cable to display on the screen.
first of all, the rca video cable was instantly detected with the 3G+ MMI as an auxilliary video input. not bad for a $60 cable, and no need for expensive tv tuners. if you get creative, you could hook up an apple tv and use airplay to wireless mirror your iphone or ipad onto the mmi screen.
the ami cable is esstentially an rca video feed with left and right audio.
the image on the $12 backup camera is suprisingly clear and on par with our rear view camera. two issues though: i don't like the fake distance lines because they aren't calibrated, and the image is reversed (since it was designed for a rear cam). i think i will get one that has a normal image without the distance lines. ideally you want to position the camera to show the edge of your front bumper so you know exactly how much distance you have before you hit an obstacle.
i think this inexpensive mod will save my front chin spoiler from those pesky wheel stops until i can figure out how to retrofit the oem front parking sensors to get the graphical display.
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