I have an AVH-4400 NEX. I just changed my battery in my truck and now my screen calibration is off and I can't enter my password. I tried the above solution but it did not work. Has anyone had any success fixing this problem on this model? Thanks in advance. I cannot understand how Pioneer has not fixed this problem. I know my password but cannot enter it due to a fault in their software. I find it insane that I may have to pay them money and lose the use of my stereo for weeks because of poor software.
