If your Fitbit Blaze sleep tracker is not working, you are not alone. Many users have reported issues with the sleep tracking feature on their Fitbit Blaze devices. The problem could be due to a variety of reasons, including faulty heart rate monitors, incorrect tracker settings, or even tattoos on the wrist affecting the light sensors. In some cases, the issue may be resolved by adjusting the sleep sensitivity settings or restarting the device. If basic troubleshooting steps do not work, you may need to contact customer support for further assistance or consider replacing the unit.
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What You'll Learn

Fitbit Blaze not auto-tracking sleep
If your Fitbit Blaze is not auto-tracking your sleep, there are several potential solutions. Firstly, it is important to ensure that your Blaze is set up correctly and that the sleep sensitivity is set to "Sensitive" or "Normal". If it is set to "Sensitive", try changing it to "Normal" or vice versa. Additionally, make sure that your heart rate tracking is turned on in your settings, as the absence of this feature may result in your sleep not being tracked.
Another potential solution is to restart your device. For the Fitbit Blaze, you can do this by pressing and holding the buttons on the back and bottom of the device simultaneously until the Fitbit logo appears. If this does not work, you may need to reset your device by pressing and holding the buttons for 10-15 seconds.
It is also worth noting that tattoos or other marks on your wrist may interfere with the light sensors on the device. Try switching the device to the wrist without tattoos or marks to see if this improves sleep tracking. Additionally, ensure that your Fitbit is positioned snugly on your wrist, as a secure fit improves the accuracy of sleep tracking.
If none of these solutions work, you may need to contact Fitbit customer support for further assistance or consider replacing your device if it is faulty.
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Heart rate monitor issues
If your Fitbit Blaze is not tracking your sleep, it could be due to a faulty heart rate monitor. This is because the Fitbit Blaze relies on heart rate data to determine sleep stages. If the heart rate monitor is not functioning properly, it can lead to inaccurate or incomplete sleep tracking.
To troubleshoot this issue, you can try the following steps:
- Check your wrist placement and band tightness: Ensure that you are wearing your Fitbit Blaze on your wrist, as recommended by the company. Adjust the band to a snug but comfortable fit, about an inch above your wrist bone. This can improve the accuracy of the heart rate sensor and, consequently, sleep tracking.
- Restart your device: Try restarting your Fitbit Blaze by pressing and holding the buttons on the back and bottom of the device until you see the Fitbit logo. This can help resolve any temporary glitches or issues that may be affecting the heart rate monitor.
- Review your tracker settings: Check your tracker settings to ensure that sleep sensitivity is set appropriately. You can try switching between "Normal" and "Sensitive" settings to see if it improves sleep tracking.
- Update your device and app: Make sure that both your Fitbit Blaze device and the accompanying Fitbit app on your phone are up to date with the latest software versions. Updates often include bug fixes and improvements that can enhance the accuracy of the heart rate monitor and sleep tracking.
- Contact Fitbit Support: If none of the above steps resolve the issue, reach out to Fitbit's customer support team. They may provide additional troubleshooting tips or determine if your device needs to be repaired or replaced due to a faulty heart rate monitor.
It is important to note that while the Fitbit Blaze can provide valuable insights into your sleep patterns, it should not be solely relied upon for diagnostic purposes. If you have concerns about your sleep health, consider consulting a medical professional or undergoing a comprehensive sleep study.
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Sleep stages not working
If your Fitbit Blaze is not showing your sleep stages, it could be due to a few reasons. Firstly, it is important to ensure that your Fitbit is positioned snugly on your wrist. If the band is loose, it may move during sleep, disrupting the tracking of sleep stages. Try adjusting the band to fit comfortably but securely, just below the wrist bone, as per Fitbit's suggestion.
Another potential reason for the issue could be related to the heart rate reading. In some cases, the Fitbit may be unable to determine sleep stages due to an unclear heart rate reading, even though the heart rate graph appears to be functioning properly.
Additionally, it is worth checking for any updates or changes in settings. Sometimes, an update can cause changes in the settings, affecting the sleep stage tracking. It is also possible that the issue is temporary and may resolve on its own after a few days. Some users have reported that their Fitbit Blaze started tracking sleep stages again after a few days without any changes made.
If none of these suggestions resolve the issue, it may be a good idea to reach out to Fitbit customer support for further assistance and to report the problem.
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Troubleshooting the sleep tracker
If your Fitbit Blaze sleep tracker is not working, there are several troubleshooting steps you can try. Here is a guide to help you get your sleep tracker working again:
Restart your Fitbit Blaze
Restarting your device can help resolve minor glitches and issues. To restart your Fitbit Blaze, press and hold the buttons on the back and bottom of the device until you see the Fitbit logo.
Check your tracker settings
Review your tracker settings and ensure your sleep sensitivity is set correctly. Try changing the setting from \"Normal\" to \"Sensitive\" or vice versa.
Check your heart rate monitor
Ensure that your heart rate monitor is functioning properly. If your Fitbit is unable to get a clear heart rate reading, it may not be able to determine your sleep stages. Check if your heart rate data is showing for the day. If not, try turning the monitor off and on again and sync it with your device.
Adjust the position and snugness of the band
The position and fit of the band can affect the sleep tracking. Try wearing the band on the snuggest comfortable notch, about an inch above your wrist bone, as recommended by Fitbit. Ensure that the band does not move during sleep.
Check for tattoos or ink on your wrist
Tattoos or ink on your wrist can interfere with the light sensors of the Fitbit. Try wearing the device on the wrist without any tattoos or ink, or cover up the tattoos when wearing the device on the tattooed wrist.
Update your Fitbit software
Ensure that you have the latest software version installed on your Fitbit. Some issues with sleep tracking may be due to software bugs that are fixed in subsequent updates.
Contact Fitbit Support
If none of the above steps resolve the issue, contact Fitbit Support for further assistance. They may have additional troubleshooting suggestions or determine that your device needs to be replaced.
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Restarting the Fitbit Blaze
If your Fitbit Blaze sleep tracker is not working, you can try restarting your device. Restarting your Fitbit Blaze can help refresh the device and may alleviate common problems. Here is how you can restart your Fitbit Blaze:
Firstly, find the Back and Select buttons on your Fitbit Blaze. The Back button is on the left side, and the Select button is on the bottom right of the device. Once you have located these buttons, press and hold them simultaneously for about 10 seconds. Continue holding the buttons until you see the Fitbit logo on the screen. This process should take less than 10 seconds. Once the logo appears, release the buttons.
It is important to note that the Fitbit Blaze cannot be reverted to its factory settings. However, if you still encounter issues with your device, you can consider deleting it from your Fitbit account and erasing any messages associated with it to clear your data. If problems persist, you can contact Fitbit's customer support team for further assistance.
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Frequently asked questions
There could be a few reasons for this. Firstly, check that your sleep sensitivity settings are set to "Sensitive" rather than "Normal". If this doesn't work, try restarting your tracker. If this also fails, your heart rate monitor may be faulty and you may need to get your unit replaced.
This could be due to the position and snugness of the band. Try wearing the band on the snuggest comfortable notch, or an inch above your wrist bone, as suggested by Fitbit.
This could be due to tattoos on your wrist interfering with the light sensors. Try wearing the Fitbit on the wrist without tattoos, or with the tracker on the underside of your wrist.


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