unfortunately, my store recently hooked up an avic-d3 and it also wouldn't let us bypass it. we are trying to put it in an 05 dodge magnum. i believe it is the newer units that will not allow you to bypass them. i put one in an 05 ford mustang in january and it allowed me to bypass it, but the one we tried to put in the magnum a week ago or so, wouldn't allow us to. so i'm not sure what the deal is, like i said though, i think the newer ones will not allow you to.