DIGITAL TROUBLESHOOTING FOR AXS DERAILLEURS

AXS derailleurs are powered by AXS batteries, which need to be charged every 20-60 ride hours depending on component type. To check AXS battery status, press the AXS button on your derailleur and look at the LED next to it. The LED will illuminate to indicate the following:

• Green = Good (more than 25% remaining)
• Red = Low (less than 25% remaining)
 
• Flashing red = Critically low (less than 10% remaining)

If the LED does not illuminate, your AXS battery is dead. Try a different AXS battery or charge the existing one.

HOW TO: CHARGE AXS BATTERY

Is the LED on your rear derailleur blinking red and green when you try to shift? This light sequence indicates that a shift has been rejected to protect your derailleur from potential damage. When temperatures become too extreme, your derailleur may refuse to respond to your shift commands. For optimal performance, ensure your AXS batteries are stored and used in their preferred conditions:


• Storage conditions: Temperature from -40°C to 70°C
• Operating conditions: Temperature from -10°C to 40°C

For 2x AXS systems, the LED on the rear derailleur will also blink red and green when attempting to shift into a locked-out gear combination. The system will not allow shifting into the small chainring and small cog combination to provide an optimal chainline. 

Still no shifting? Try a reboot on your rear derailleur:

• 1. Open the latest version of the AXS app.
• 2. Remove the AXS battery from your rear derailleur.
• 3. Press and hold the AXS button on the derailleur.
• 4. Reinstall the AXS battery.
• 5. Release the AXS button.
• 6. The LED should flash yellow and light green. While it’s flashing, click the "Tools" button in the AXS app to find your rear derailleur.
• 7. The app will show that your rear derailleur needs an update by stating “Recovery Required.”
• 8. Complete the update to finalize the reboot.