Join Date: Oct 2006
Location: Bucks County, PA. USA
Car: 06 Outback LLBean-Black
Feedback Score: 0 reviews
My understanding is that the Nav system uses a combination of GPS and feedback from the car to determine where you are on the map. I think that the civilian GPS is only accurate to around 15 ft, so the system uses the car feedback (mph) to fill in the blanks. The system also uses this feedback to determine that the car is in motion and that the input should be locked out. I think that if you disconnect the wire you are basically tricking the system into thinking that the car isn't moving, at least until the GPS reports that your position has changed. I wonder how well disconnecting the wire would work at high speeds... it might lock you out anyway.
There's probably a lot of cool things that are hidden in the Nav system but it doesn't look like anyone has figured out how to get them yet. We need an insider at Kenwood.
Also, I thought it would be great if somebody figured out how to hack the Nav system. It's basically a computer with a DVD reader sitting under your front seat that has some level of communication with your car's computer. If someone could figure out some details about the system, it might be possible to run an open source MP3/DVD player (or any other software) on the thing. I used to have this internet appliance thing called a 3Com Audrey that hooked up to the internet and had a touch screen. It was basically used for getting email and keeping phone books and stuff. Somebody figured out that it was running QNX operating system and was able to hack it. Now there is a whole community of Audrey hackers writing software for the thing. If we could get into the Nav system like that we could do all kinds of things depending on what kind of info is passed back and forth from the Nav system to the car's computer. It seems like having all that hardware to just do Navigation is a waste especially when it is already so closely integrated with the car. Why not play MP3s and DVDs, control every function of the car like interior lights and door locks, provide feedback via virtual guages for oil pressure etc?
Anyway, if you figure out any hidden codes let us know.