You will get a notification when a Dexcom G6 transmitter battery has died or the system detects a problem.

To pair your new transmitter after you receive the "Replace Sensor & Transmitter Now" notification, follow the instructions in the videos below:

Read this pdf that contains instructions on how to pair a new transmitter.

How to Replace Your Transmitter (App):

How to Replace Your Transmitter (Receiver):

Click here to view the Dexcom G6 User Guide for more information.