Actually there are to ways to set this up.
1. Reset Button, there is a small reset button like button of a router or older smart phones. You need to press for 5 sec and it will reboot the informant system. Most informant system reboot into English as default.
2. There is Setup Button, closest symbol will be like this (体制). After that If Toyota touch this button on screen,
( 般的な設定) which is general setting, then for language press this
(言語設定) and select it.
TOYOTA Land cruiser V8
or
or
if it was helpful let me know