How+on+rns+300+change+language+new May 2026
If the interface is already in an unknown language (e.g., French, German, Spanish), use the following icon-based or menu structure:
On the RNS 300, no second confirmation is required. As soon as you stop turning the knob on your desired language (e.g., English), the system instantly adopts it. There is no "OK" button to press. how+on+rns+300+change+language+new
Press the Volume/Power knob (left side). Wait 10 seconds for the system to fully boot. If you see a radio frequency or a navigation map, you are ready. If the interface is already in an unknown language (e
Solution: This indicates a failed internal memory battery (a supercapacitor on the circuit board). The unit cannot store settings. You will need to change the language every time you start the car. Unfortunately, this requires a professional electronics repair or unit replacement. Select it, then choose your preferred language from
Solution: The RNS 300’s firmware only includes a fixed set of Western European languages. You cannot add new languages without re-flashing the entire firmware (a risky dealership process). Your only option is to live with English or German, or replace the unit with an aftermarket stereo.
Some later revisions of the RNS 300 require a secret button combo:
The secret to the RNS 300 is that the language menu is hidden inside the Setup menu, which is labeled with a physical key: "MENU" or "SETUP" .