How do I replace my transmitter?

You will get a notification when a Dexcom ONE 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 video instructions here.

LBL021329 Rev001

LBL021329 Rev001

© 2026 Dexcom, Inc. All rights reserved.

EE flag

EE