To disconnect your CGM from your t:slim X2 pump, please follow these steps:
Navigate to Options > My CGM > Stop Sensor
NOTE: It will take up to 24 hours for the graph to disappear. A user may also reboot the pump and that will remove the graph and stop all communication with the transmitter immediately.
During this 24-hour period, the pump will be searching for the transmitter and can partially or fully deplete the pump battery. It is important to carefully watch the battery during this time if you choose not to reboot your pump.
Important note about Dexcom support:
For "no restarts" alert or physical problems with your sensor or transmitter, such as bleeding, bruising, skin reaction, adhesive issues, applicator issues, or broken wires, you should contact Dexcom using one of the options at dexcom.com/contact.
If you have paired a Dexcom CGM with your Tandem insulin pump, and your question isn't answered in this help section, you should contact Tandem customer technical support for all other issues by calling (877) 801-6901.