If you do not want to replace the stereo, use the unit strictly for audio and ignore the built-in navigation.
This is the best way to understand what is on your screen. pioneer carrozzeria avic-hrz88 language change
If you cannot change the language at all, you can still use the AVIC-HRZ88 by memorizing the Japanese menu layout. Here is a quick cheat sheet for the most critical functions: If you do not want to replace the