Home › Display settings › Yamaha PW displays (Display A, Display C, Interface X, Display X) › Yamaha PW displays: lights on/off
Switch lights on and off on a Yamaha PW e-bike (Display A, C, X, Interface X)
Lights on the drive unit's light output are toggled with the light button on the assist switch (Display A/C) or in the display menu (Display X). Many city bikes on Yamaha have lights permanently on.
Step by step
- Switch the bike on.
- Press the light button on the assist switch (headlight symbol). A light icon appears on the display.
- Press again to switch off.
- Display X: menu > [Light] > ON/OFF/AUTO.
- Interface X: hold the button briefly (mapping depends on the bike brand) or use the app.
Tip: If the light icon shows but the lamp stays dark, the drive unit is delivering power; check the connector at the headlight before blaming the display.
Can't find it?
No light button and no icon: lights on your bike are on their own battery or are hard-wired always-on by the brand.
Frequently asked
Can lights be set to automatic?
On Display X, yes. On A/C only if the bike brand configured it.
Do lights drain the main battery?
A few watts, negligible.
Lights turn off when the battery is nearly empty.
Normal: the drive unit cuts the light output last, but a fully empty battery ends everything.
Manuals and video
Videos found on YouTube and checked automatically; they are other people's work, not ours.
- Yamaha interface X flashing red lights after PW X3 motor cuts out on GASGAS ECA 3 David Nichols
- Yamaha PAS Natura Controller & Light Test YubiClick Bicycle Works
Other Yamaha PW displays (Display A, Display C, Interface X, Display X) guides
Yamaha Display A / C / X: switch mph to km/hYamaha Display A / C / X: reset trip distanceYamaha PW displays: wheel size (dealer / diagnostic tool)Yamaha PW: assist modes and what you can (not) customiseYamaha Display X / Interface X: pair with the Yamaha e-bike appYamaha PW: firmware update (dealer, app on newer models)Yamaha PW: walk assist (push 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.