You need a blank DVD-R or CD-R disc and a computer with a disc drive.
Push the panel closed. The screen will read "System Loading" alongside a progress bar in Japanese. nddn w56 76031 software map disc21
Simply booting the unit with the LOADING.KWI file . It only unlocks the system's other features (radio, DVD, CD, settings). To get actual turn-by-turn navigation, you need: You need a blank DVD-R or CD-R disc
Insert your newly created disc into the disc slot. If successful, the system will read the file, the error message should disappear, and the unit should return to normal functionality. Simply booting the unit with the LOADING
: The most reliable way is to find the original DVD that came with the car. It is often labeled with a version number (e.g., A21, A22, A23). Compatible Versions : For this specific model, you typically need a Toyota Navigation Disc (A-series) . Common compatible versions include: (The "Disc 21" you may be referencing)