How to fix your QuickCare thermometer if it won't take a reading

If your Kinsa QuickCare thermometer will not take a reading: 

  • First, ensure the power button is being pressed enough. Try pressing it with a nail, or using a countertop/another firm surface to depress the button all the way. Sometimes it can be tricky to push.
  • Second, try resetting your thermometer. Follow this guide to learn how: Reset Your QuickCare

If resetting the thermometer does not fix the issue, it may just need a new battery to clear up any problems.

  • The Kinsa QuickCare uses one CR 2032 battery, available at all pharmacies, most grocery stores, and of course Amazon. A pack of five batteries usually sells for around $5. For more information and for direct links to these batteries at different online stores, go to  

If you’re attempting to take your temperature but can’t because the thermometer is displaying “APP” - we recommend downloading the Kinsa app from and following the steps in How to set up the Kinsa app.


If you don’t want to use the Kinsa app, refer to this guide to skip the “APP” message: How can I use the thermometer without the app?


If you’ve tried resetting your thermometer and replacing the battery but neither step worked, please tell our Customer Happiness team that you’ve already followed this troubleshooting guide and outline all the specific steps you’ve tried. If possible, we’d love for you to include a quick video showing your thermometer attempting to take a reading, nothing beats being able to see exactly what you are seeing!