This is usually related to the battery connection, battery charge level, or the USB-C charging cable.

Troubleshooting steps

Check the battery connection and charge
Remove the battery from the armrest and make sure it is fully and correctly inserted. If the battery is low, charge it for 30 minutes to 1 hour, then reinsert it and press the button again to see if the indicator light turns on.

Check the USB-C charging cable
If the light does not turn on during charging or after reinserting the battery, make sure the USB-C cable is securely plugged into the battery. If possible, try a different cable or power source to rule out a cable issue.

If the issue persists
If the problem remains after completing the steps above, there may be an issue with the battery contacts or internal circuitry. Please record a short video showing the battery, charging connection, and button operation, and send it to our support team for further assistance.