The is a Japanese-made HDD navigation system typically found in Toyota vehicles from around 2006. Most units of this era do not have a built-in "English" toggle in the settings menu; they are hardcoded for the Japanese domestic market.
If you have recently imported a vehicle from Japan or purchased a car with a Japanese head unit, you likely have the Toyota Genuine Navigation System. While it’s a reliable piece of hardware, the interface is notoriously stuck in Japanese, making it difficult to navigate menus or adjust settings. nhdnw56 change language to english verified
If you have verified that there is no language option in the settings menu: NHDN-W56 The is a Japanese-made HDD navigation system