You car must have been set to English by a previous navigations system that had English installed on it.

The nav tells the vehicle what language to use.
To solve your problem, you need to load the correct desired languages on the nav

You need the OS software to do this, so you can do an OS software update at the same time

To change the languages, visit a friendly dealer, or use my NavCoder software www.siegenthaler.co.nz/NavCoder