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Thread: Hacking a Ford OEM navigation HU

  1. #11
    Constant Bitrate
    Join Date
    Nov 2012
    Posts
    140
    A four pin coax will probably be RGB and composite sync.

    The comp sync signal has to be converted to horz sync and vert sync.

    GM/DELPHI used this on my CTS-V.

    I hope FORD is better at releasing information then GM/DELPHI.

    I had to reverse engineer the interface I use.

    Furthermore, the OEM display would not handle the bandwidth required and I replaced it with one that could.

    This will give you an idea of what I went through, but I got it to work!

    http://www.mp3car.com/worklogs/153699-a-macd-v.html
    Last edited by heavymetals; 03-17-2013 at 12:32 PM.

  2. #12
    Newbie
    Join Date
    Mar 2013
    Posts
    47
    Thanks, I'll take another look. I picked up a 2nd display cheap on eBay that works fine. I popped it apart and tried to figure it out. I also have a video module that puts a picture on the screen which is where I found the chip. Your RGBs seems more likely but it looked like only one of the 4 pins was being used. But its hard to tell. I'll take another look.

    Sent from my ASUS Transformer Pad TF700T using Tapatalk 2

  3. #13
    Newbie
    Join Date
    Apr 2010
    Posts
    19
    Quote Originally Posted by sredmyer View Post
    I am working on the factory OEM navigation system from Ford. This is the 2009-2011 unit manufactured by Clarion. All I am trying to do at this point is to simulate the required CAN BUS signals so that the unit can be powered up on the bench. Although I have so far done a considerable amount of reading I do not yet have a clear idea of what I need or how I would do this.

    As mentioned previously these units are manufactured by Clarion for Ford. They are available in many Ford vehicles with various different features and controls. For instance when installed in a Ford Edge they may be configured to provide (via MS-CAN signals) control over the climate control system of the vehicle while the same unit installed in a Super Duty truck would not be configured for this option. The point is that the units have a large number of configuration settings that determine what user features and graphical elements are actually present. Ford has these devices locked down so that they can only be programmed (have the aforementioned configurations set) by an authorized Ford service center using a proprietary tool built by Ford. Currently there are only two companies in the USA that are authorized by Ford to do this.

    Further these unit have a built in hard drive which stores the nav software and all of these configuration values and other device required files. This hard drive is a 40gb drive of which 10gb is available for the user to store pictures and media files. The only way for the user to get media files on the device is to load a CD and instruct the unit to rip it. The unit has a built in Gracenote metadata database that it uses to lookup the CD and tag the files so that the user interface can display the album art, track titles and the like when the user selects the internal jukebox as the media source. This is a neat feature but is virtually useless since there is no way to mass load media files. The only way to load the jukebox is to rip each CD individually into the unit. At approximately 6 minutes per CD a person could spend an entire weekend just loading a few CDs.

    As I say all I am trying to do at this point is to "spoof" the required CAN signals to get this thing to power up on the bench. However eventually I would like to figure out how to manipulate the configuration values and find a way to mass load media files. Problem is I have no idea where to even start with this project. I am not exactly ignorant on electronics but it certainly is not my area of expertise. I am a software engineer who has worked in the corporate environment for many years. I mention this only to point out that I am experienced writing Windows desktop and client server applications using VB (both classic and .Net) and C# but have very little knowledge of embedded programming.

    Can anyone here provide me with any direction as to how to get started on this project?

    Thanks,
    Steve
    If anyone is interested, I finally found a place that can do custom programming of these radios... www.4DTech.com Not only can they program pretty much any setting you want, they seem very knowledgeable about what the settings do and these radios in general.

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