There are no software mods built into my data.zip. You will have to do that yourself or do the hardware mod. More than likely that is your problem.
Thanks dpburst. I fixed it and it was the parking brake lead. I have another question for you. After installing the unit and all, I noticed that I no longer have the option to change the mute settings for when the navigation kicks in ie change the unit to go from full mute, to att, to disable in the "AV settings" sections. The button is greyed out. Is this part of your mod? I ask cause I want to disable to mute. Thanks.