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Bosch Kiox (BES2): turn the lights on and off, always-on lights
The light button is on the control unit. Always-on lighting is a manufacturer/dealer setting in the drive unit, not a Kiox menu.
Step by step
- Switch the Kiox on.
- Press the light button (bulb icon) on the control unit. A light symbol appears in the status bar and the Kiox switches to its dark colour scheme.
- Press again to switch off.
- If the lights are on from the moment the bike starts and the button does nothing, always-on lighting is configured in DiagnosticTool by the dealer.
- Lamps that do not light while the symbol is on point to wiring or the lamp.
Tip: Leaving the lights on by day is fine for range: a few watts against hundreds for the motor.
Can't find it?
The classic Kiox has no automatic light mode of its own; only lamps with a built-in sensor switch automatically. Error codes when pressing the light button: see our error-code pages.
Frequently asked
Can I set the lights to automatic on the Kiox?
Not from the display; always-on is a dealer setting, sensor automation depends on the lamp.
Why can't I turn the lights off?
Always-on lighting is configured for your market; a dealer can change it where allowed.
Does the dark colour scheme mean night mode?
Yes, the Kiox switches to a dark scheme automatically when the lights are on.
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 Kiox (BES2) guides
Bosch Kiox (BES2): change the display languageBosch Kiox (BES2): switch from mph to km/h (or km/h to mph)Bosch Kiox (BES2): set the time and time formatBosch Kiox (BES2): reset the trip and set automatic trip resetBosch Kiox (BES2): wheel circumference (dealer-set, small correction possible)Bosch Kiox (BES2): change assist modes and what can be customisedBosch Kiox (BES2): activate and use eBike LockBosch Kiox (BES2): set the display brightnessBosch Kiox (BES2): pair with the eBike Connect app via BluetoothBosch Kiox (BES2): update the firmware (display via app, drive unit via dealer)Bosch Kiox (BES2): enable and use walk assist
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.