If your Philips Hue motion sensor isn't detecting movement, won't trigger lights, or has connectivity issues with the Hue Bridge, this guide will help you resolve these problems.
Sensor Not Detecting Motion
When the sensor doesn't trigger on movement:
- Check battery level in the Hue app - replace if low
- Clean the sensor lens with a soft dry cloth
- Ensure nothing is blocking the sensor's field of view
- Check the sensor isn't pointed at heat sources (radiators, sunny windows)
- Verify motion sensing is enabled in the app settings
- Adjust sensitivity settings if available
Lights Not Turning On When Motion Detected
If motion is detected but lights don't respond:
- Verify the automation/routine is properly configured
- Check which lights are assigned to the motion sensor
- Ensure the time-based settings aren't restricting activation
- Check if the lights are reachable in the Hue app
- Verify "After motion stops" settings aren't set to "Do nothing"
- Make sure the sensor isn't in "Daylight sensitive" mode during day
Sensor Shows Offline or Unreachable
When the sensor won't connect to the bridge:
- Check the distance between sensor and Hue Bridge
- Add Hue bulbs between the sensor and bridge to extend Zigbee range
- Remove and re-add the sensor to the Hue app
- Restart the Hue Bridge
- Replace the sensor batteries
- Factory reset the sensor and re-pair
Daylight Sensing Not Working Correctly
If the light sensor gives wrong readings:
- Ensure the sensor isn't covered or in a dark corner
- The light sensor is separate from the motion sensor
- Adjust the daylight threshold in automation settings
- Place sensor where it can accurately read ambient light
- Direct sunlight can give false high readings
Temperature Sensor Reading Wrong
For inaccurate temperature readings:
- The sensor measures ambient temperature where it's placed
- Avoid placing near heat sources or air vents
- Give the sensor time to acclimate after moving
- Temperature is approximate, not laboratory-precise
- Check if battery is getting hot (indicates issues)
Sensor Triggers Too Easily or Not Enough
Adjusting sensitivity:
- Access sensitivity settings in Hue app accessory settings
- Lower sensitivity if pets trigger the sensor
- Increase sensitivity if small movements aren't detected
- Adjust mounting height - 7ft is optimal for most rooms
- Angle the sensor slightly downward for best detection
Multiple Sensors Conflicting
When multiple sensors cause issues:
- Set up each sensor with different zones/rooms
- Use different time delays for overlapping areas
- Consider using Hue Labs formulas for complex setups
- Ensure automations don't conflict with each other
- Use rooms/zones to separate sensor control areas
Reset Hue Motion Sensor
To factory reset:
- Remove the sensor from the Hue app first
- Use the setup code on the sensor for reset
- Or press the setup button for 10+ seconds
- The LED will blink to confirm reset
- Re-add to the Hue app and reconfigure automations