Understanding the NXS Shifter LEDs (Charging & Troubleshooting Guide)

NXS Setup and Operation
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Your NXS shifter may sometimes resemble a Christmas tree — but don’t worry.
Every color and blink pattern is designed to tell you exactly what’s going on.

The motor unit has two LEDs and two buttons:

  • Charging LED

  • Function LED

  • Function Button

  • Reset Button

Below is a complete guide to what each LED means and how to use them for troubleshooting.

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:battery: Charging LED — Battery Level Indicator

When the shifter is plugged in, the Charging LED changes color as the battery voltage increases.

This lets you check charging progress at a glance.

Charging Color Steps:

Voltage LED Color
< 3.6 V Red
< 3.7 V White
< 3.8 V Magenta
< 3.9 V Yellow
< 4.0 V Cyan
< 4.05 V Green
> 4.05 V Green – Rapid Flashing
Fully Charged Green – Steady

Important Tip

Once you see rapid-flashing green, the battery is fully charged for practical use.
You do not need to wait for the LED to turn into steady green.

:gear: Function LED — Quick System Status Check

Whenever you:

  • press the Function Button (quick press), or

  • perform a reset

…the Function LED will show a short six-blink diagnostic sequence.

This gives you instant insight into whether the system is homed, connected, and functioning correctly.

:magnifying_glass_tilted_left: Six-Blink Diagnostic Breakdown

Each blink tells you something different. Here’s the full meaning of each one:

Blink 1 — Home Status

  • Green: Homed and ready

  • Red: Needs homing

    • If red, perform a homing procedure before riding.

Blink 2 — System Status

  • Green: System OK

  • Red: Internal error — contact support

Blink 3 — Position Sensor 1

  • Green: Working properly

  • Red: Sensor fault — contact support

Blink 4 — Position Sensor 2

  • Green: Working properly

  • Red: Sensor fault — contact support

Blink 5 — Remote Connection

  • Blue: Connected to handlebar remote

  • Red: Not connected

    • If red, re-pair the remote or check battery/power.

Blink 6 — Battery Level

Uses the same color codes as the Charging LED above (Red → Green).
Great for checking battery level without plugging in.

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Mine doesn’t seem to show any led on while charging is this expected? The app also doesn’t indicate that is charging, I will leave it plugged and see if tomorrow is fully charged.

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The Charging LED’s are controlled by the computer chip, not the charger. So if the computer chip is frozen for some reason, or the battery is completely dead, it will not display anything. Press the red button for at least 3 seconds while its plugged into the charger. That will reset it. Note: The red button is just a power cycle, and will not affect any settings.

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I followed up via DM directly to you given that looks more like a my device issue than a community useful follow up

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Note: We followed up via message. We think this may be due to an incompatible USB charger.