This guide is for anyone whose Hue smart button has stopped controlling their lights. The steps come from the FAQ on Hue’s UK page for the Smart button v3.

What This Problem Means

The Hue smart button runs on a CR2032 battery and, Hue says, “can control up to two Rooms, a Zone or even your entire smart lighting setup.” Hue’s FAQ says it can control up to 10 lights without a Bridge; add a Hue Bridge to customise the button.

Common Symptoms

• Pressing the button doesn’t change your lights
• The button doesn’t control all of your lights
• You can’t change what the button does
• The button has stopped responding

Safe Checks You Can Try

1. Check how many lights it controls

Hue’s FAQ says: “If you don’t have a bridge, you can connect these switches to up to 10 lights”. To customise the buttons, add a Hue Bridge.

2. Check the battery

Hue says “the current version of the dimmer switch, the smart button and the tap dial switch all use a CR2032 battery”. Check the smart button’s battery.

3. Reset it in the app

In the Philips Hue app, navigate to the edit screen of the smart button and tap the Reset button.

4. Factory reset with the setup button

If issues persist, press the setup button (or pinhole) for more than 10 seconds.

5. Add the button again

Add it back in the Philips Hue app: go to Settings > Devices and tap the + button.

6. Keep it indoors

Hue’s switches “are rated for indoor use, so be sure to only use them inside.”

When To Contact Support

If none of these steps fix it, contact Philips Hue through Hue’s UK support site.