The system memory is failing to retain the setting, often due to a dying car battery causing a voltage drop during engine start. Fix: Have your vehicle's battery health tested.
[Power On] ➔ [Press SETUP] ➔ [Select Menusprache] ➔ [Choose Language] ➔ [Insert CD] : Press the left volume/power knob.
Press the button (located on the right side of the unit). how+on+rns+300+change+language+new
: Rotate the right-hand menu knob until you highlight System or System settings . Press the knob inward to select it.
: For deeper system changes or if the menu is inaccessible, professional tools like an OBD11 adapter can be used to force a language change through the car's control units. How to change the Language for any car The system memory is failing to retain the
Check if the navigation CD is dirty or scratched. Clean the disc with a microfiber cloth moving from the center outward, then reinsert it and try again. 2. Prompt Asking for "Navigation Medium"
: Setting the radio to "Auto" configures the head unit to mirror whatever language is currently active on your dashboard instrument cluster. Press the button (located on the right side of the unit)
Before purchasing any navigation CDs or attempting to recode the system, it's a good practice to verify the current software version of your RNS 300. You can access a hidden service menu by turning on the unit, then pressing and holding the "Tone" button for about 7 seconds. This menu can show you the software version, which might be helpful when searching for compatible language data online.
If all else fails, disconnecting the car battery for 10 minutes can force a hard reset of all convenience systems.