I bought my car used so I didnt get the code in the glove box. My car died the other day and when I jumped it, it asked for the code. I ended up just pulling the navi out the next day and got the serial number off the back. I called the dealer to give them the number and they gave me a 5 digit code. The navi will only take 4 digits though, is there another serial number? I have read that the navi takes 4 and cd player takes 5?