A Philips Hue motion sensor that reacts at the wrong time, or whose status does not match what the lights do, is almost always a daylight setting, the Bridge's time zone or a weak Zigbee link, not a faulty sensor. The sensor only turns lights on when it is dark enough, set by its daylight threshold in the Hue app, and its schedule follows the Bridge's clock. Check the Bridge's time zone in the app, then raise the daylight threshold and test the sensor in a dim room. If status flickers or lags, move the sensor within range of a powered Hue bulb or plug, since those repeat the Zigbee signal.
Differential
Likely causes of “Hue accessories shows the wrong time, state or sensor reading”, and how to tell them apart
- 1
The daylight threshold blocks the lights
What separates it Motion registers in the app but the lights stay off in a bright room
How to confirm Raise the daylight threshold in the sensor's settings, then test again in a dim room
- 2
The Bridge's time zone or location is wrong
What separates it Time-based schedules run an hour or more off, or sunset-based times shift
How to confirm Correct the Bridge's time zone and location in the Hue app, then restart the Bridge
- 3
A weak Zigbee link
What separates it The sensor's status drops to unreachable or reacts late
How to confirm Move the sensor closer to a powered Hue bulb or plug that can repeat the signal, or add a repeater
- 4
Low or mismatched batteries
What separates it Reaction slows, the battery shows low, or the sensor drops out
How to confirm Replace both AAA batteries with a fresh matched pair
- 5
Old firmware
What separates it The sensor or Bridge misbehaves after an app update
How to confirm Check the Bridge and the sensor for pending firmware updates in the Hue app
Before you touch a setting
Record this first — changing settings destroys the evidence
- The sensor's daylight threshold and the room's light level during the test
- The time zone and location shown for the Bridge
- The sensor's battery level and which Hue device is nearest to it
Try in this order
0 of 5 completedTest in a dark room
ReversibleCover the room's light and walk in front of the sensor to see if lights respond; a response only in the dark means the daylight threshold.
Raise the daylight threshold
ReversibleIn the Hue app open the sensor's settings and raise the threshold so it works in more light.
Check the Bridge's time zone
ReversibleConfirm the Bridge's time zone and location in the Hue app, since schedules follow the Bridge.
Check range and batteries
ReversibleMove the sensor within reach of a powered Hue bulb or plug and fit a fresh matched pair of AAA batteries.
Update firmware
ReversibleInstall any pending update for the Bridge and the sensor, then retest.
Model-specific
What is true of this model and not of its siblings
- Battery
- Two AAA cells
Stop boundary
When this stops being a self-service repair
- !If a fresh test in a dark room still gives no response, contact Signify support with the sensor model
- !If the Bridge's clock stays wrong after correcting the time zone, contact Signify support
Evidence ledger
Sources behind this answer
Bridge lights and updates.
Soft reset and factory reset.
Motion sensor troubleshooting.
Reset steps for the Bridge and Bridge Pro.
The company and its products.
Exact questions
Common questions
Why does my Hue motion sensor not turn lights on in the daytime?+
It only acts when the room is darker than its daylight threshold. Raise the threshold in the app if you want it to work in more light.
Does the Hue motion sensor use the phone's time?+
No. Schedules follow the Bridge's clock and location, so correct them in the Hue app.
How does the sensor connect?+
Over Zigbee through the Bridge, so a powered bulb or plug close by makes the link stronger.