Bosch Nyon: change the display language (BUI350 and BUI275)
Both Nyon generations have a language setting on the touchscreen; the newer BUI350 also follows the eBike Flow app. Two minutes, no dealer.
Step by step
- Switch the Nyon on and unlock the screen if it asks.
- Swipe or tap to 'Settings' (gear icon), then 'System settings' (BUI275: 'Settings' > 'System').
- Tap 'Language' and choose English (or your language); confirm.
- BUI350 (Smart System): the same setting exists in eBike Flow > Settings > your eBike > Display; the app setting is pushed to the Nyon on connection.
- Return to the ride screen with the back arrow or the home button.
Tip: Menu positions are the same in every language: Settings is the gear icon, System settings is near the bottom of that list, Language is at the top of System settings.
Can't find it?
The exact menu path differs between BUI275 software versions; if 'Language' is not under System settings, look under 'Settings' > 'Display' or update the Nyon (BUI275 over Wi-Fi, BUI350 via eBike Flow). The eBike Flow app's own language is fixed at registration and cannot be changed in the app.
Frequently asked
Is the Nyon BUI350 language set in the app?
It can be set on the Nyon and in eBike Flow; the app setting wins on the next connection.
Which Nyon do I have?
BUI275 (2014–2020) is thicker with a joystick control unit and pairs with eBike Connect; BUI350 (2021+) is slimmer, Smart System, and pairs with eBike Flow.
Can I change the eBike Flow app language?
No; it is fixed from the phone's language at account registration.
Manuals and video
- Bosch eBike Help Center: official error-code index
- Bosch eBike downloads: quick start guides and battery guide
- Bosch eBike dealer search (DiagnosticTool readout)
Other Bosch Nyon guides
Bosch Nyon: switch from mph to km/h (or km/h to mph)Bosch Nyon: set the time (usually automatic)Bosch Nyon: reset the trip distance and ride statisticsBosch Nyon: wheel circumference (dealer-set)Bosch Nyon: change assist modes and customise them (BUI350)Bosch Nyon: activate and use eBike LockBosch Nyon: set the display brightness and night modeBosch Nyon: pair with eBike Flow (BUI350) or eBike Connect (BUI275)Bosch Nyon: update the firmware (Flow, Wi-Fi or dealer)Bosch Nyon: enable and use walk assistBosch Nyon: turn the lights on and off, automatic and always-on lights
Still stuck? Take a photo of the display and show it to a local e-bike workshop. Bring the bike's system name (e.g. Bosch Performance Line CX) and the exact code; that saves diagnostic time and money.