You will need to enter this 16-digit code into an ERC calculator (available as mobile apps or online tools) to get a 6 to 8-digit unlock code Enter Unlock Code
If you do not possess the original physical Toyota navigation disc (typically version K400 or similar for this generation), you will need to create a recovery disc. nddn-w57 reset
No display, no sound, or completely unresponsive unit. You will need to enter this 16-digit code