“Someone passed, the night light was lit”: what does it mean and how to remove the backlight Xiaomi

You wake up at night from an unexpected light in your room, and a notification on your TV screen or smart home app says, “Someone passed, the night lights were lit?” It's not a ghost or a matrix glitch, and that's how one of the functions of Xiaomi's ecosystem, which is about motion sensors and lighting automation, works. TV, Yeelight lamps or Mi Home Security systems, where night mode activates backlighting when motion is detected.

The problem is that this function sometimes works falsely, for example, because of pets, drafts or sensor errors, and if you haven't set up the lighting automation consciously, then suddenly flashing lights in the middle of the night can be a nightmare.

• 🔍 Why Xiaomi turns on light at night and what does the notification mean;
• 📱 What devices can be the source of the problem (TVs, lamps, cameras, sensors);
• ⚙️ How to Turn off Nightlights Manually or Reconfigure Triggers;
• 🛠️ What to do if the lighting turns on on by itself without commands.

Spoiler: 90% of the time, it’s not “someone” who is to blame, but the wrong setup in the Mi Home or Google Home app. But there are hardware reasons, such as a defect in the motion sensor in the Xiaomi TV. TV Q2 Or the Yeelight Pro lamp. Let's go through all the scenarios.

1. What does the notification "Someone passed by, the night light was lit" mean?

This is a standard Xiaomi ecosystem alert that appears when:

1. Motion sensor (built into a TV, lamp or a separate Mi Motion Sensor) captures activity at night.
2. An automation system (such as a script in Mi Home or Google Assistant) interprets this as a command to turn on the night light.
3. The source device (television, lamp, LED tape) performs the action - it includes backlighting for 5-30 seconds.

The text of the notification may vary slightly depending on the device:

• On Mi. TV: Night mode activated. Traffic detected;
• Yeelight: Light turned on by motion sensor
• In Mi Home Security, the motion sensor is activated. Night lights are on.

Why does this happen at night? Because most Xiaomi devices have Night Mode activated by default, which is:

• 🌙 Works only in the dark (usually from 22:00 to 6:00);
• 👁️ Uses a light sensor to keep it off during the day;
• 🔄 Turns on lighting for a short time (so as not to interfere with sleep).

Critical detail: if you didn’t configure this mode yourself, it could activate automatically after updating the firmware (especially relevant for Mi TVs). TV 4S/5X 2020–2023 year-end).

2.What Xiaomi devices can include night lights?

The night lighting feature is available in several types of Xiaomi gadgets when driving, here is a full list of models where the problem is most common:

The most “problematic” devices are Mi TVs TV Q2 And Yeelight lamps with firmware older than 2022, where the false-positive motion sensor bug was only patched in updates. MSP23.1.1 newer.

How do you identify the culprit?

1. Time of notification – if it came to Mi Home, see which device sent the signal.
2. Automation Logs – in the Mi Home app go to Profile → Smart home. → Journal;
3. Physical location – if the lights turn on when passing the TV, its sensor is to blame.

⚠️ Note: If you have a Yeelight lamp and a Mi TV installed TV In one room, they may be in conflict because of duplicate motion sensors, and in that case, you have to turn off the function on one of the devices.

3.How to turn off the night lights on the Xiaomi Mi TV TV

If the problem is caused by a TV (for example, Mi). TV Q2 or Redmi Smart TV), The newer models have a function called Ambient Light or Night Mode, the older models have a function called Motion Detection.

Step 1. Disconnect via TV settings:

1. On the remote, press Settings (⚙️);
2. Go to Settings. → Smart home. → Motion sensor;
3. Turn off the Night Light slider or Ambient Light at Night.
4. Save changes and restart the TV (Settings) → On TV. → Reboot).

Step 2: Update the firmware (if the function is not disabled):

• 📥 Check the version of the software in Settings → On TV;
• 🔄 If the version is older MSP23.1.1, Update the TV through Settings → Updating the system;
• 🔌 If the update is hanging, disconnect the TV from the network for 1 minute, then try again.

Step 3: Reset sensor settings (for 2020–2021 models):

Press sequentially on the remote:


Menu → Up. → Up. → Down. → Down. → Left. → Right. → Left. → Right. → OK.




The menu will open and you can select the "Reset Motion Sensor".

Turn off the function in the settings of the motion sensor

Update the firmware to the latest version

Reset the sensor settings (if there is a bug)

Reboot the TV-->

⚠️ Attention: On Mi TVs TV P1 2022 Ambient Light can be turned on again after the update. To avoid this, turn off the automatic update in Settings → System system → Update of the PO → Auto-update.

4.Tune in Yeelight smart bulbs and motion sensors

If the nightlight turns on a Yeelight lamp or an external Mi Motion Sensor, the problem lies in automation scenarios.

For Yeelight lamps:

1. Open the Mi Home or Yeelight app.
2. Choose your lamp. → Automation;
3. Find the rule with the trigger Motion at night and remove it.
4. Create a new rule without a time-bound or with another trigger (such as a voice command).

For the Mi Motion Sensor motion sensors:

• 📱 At Mi Home, go to Devices → Motion sensor → Settings;
• 🕒 Turn off the Night Mode option or change the working hours;
• 🔄 Set a 30 second delay to prevent false positives;
• 📍 Move the sensor away from heat sources (batteries, air conditioners) that may cause false signals.

If the lamp flashes without a command:

• 🔋 Check the power – unstable voltage can cause random switching ons;
• 📶 Make sure the lamp is connected to a 2.4 GHz (not 5 GHz) network);
• 🔄 Reset the lamp to factory settings (5 times to turn on/off power).

Important: If you have multiple Yeelight lamps in the same room, they can sync with each other. To avoid a domino effect (when one lamp turns on all the others), turn off the Group Control function in the settings of each lamp.

5.Mi Home Security Security Camera Problems

Mi Home Security Cameras (e.g. Mi Camera) 2K Mi 360°) They can also turn on night light through Night Light Alert:

• 🎥 The camera detects movement in the dark;
• 💡 In the settings enabled the option Flash when driving;
• 🔄 Camera connected to smart lamp via automation scenario.

How to turn it off:

1. Open Mi Home → Choose a camera;
2. Go to Settings. → Alerts → Night mode;
3. Turn off the flash when driving and night light;
4. Remove all automation associated with this camera (see Smart Home section). → Automation).

If the camera is falsely triggered:

• 🐕 Reduce the sensitivity of the motion sensor in the settings;
• 🚪 Configure detection zones by eliminating windows and doors;
• 📹 Update the camera firmware (in Settings) → Update).

⚠️ Note: In the cameras Mi Home Security to 2021 There was a bug in the year of release that made the night lights turn on even during the day if there wasn't enough light in the room. 3.5.6_00.21.

6. False positives: why light turns on on on its own

If you have turned off all settings but the night lights are still on, the reason could be one of these factors:

How to diagnose the problem:

1. Check the event log in Mi Home (profile) → Smart home. → Journal);
2. Turn off the Internet on the router – if the lights stop turning on, the problem is in cloud services;
3. Try reconnecting your device to another Mi Account (temporarily).

7.How to completely remove nightlight automation

If you want to permanently disable the night lighting feature, you need to not only turn it off in the settings, but also remove all associated automation.

Step 1: Remove the rules in Mi Home:

1. Open Mi Home → Smart home;
2. Go to the Automation tab;
3. Find all the rules with the Motion or Night Mode trigger.
4. Tap the rule. → Delete.

Step 2: Reset your smart home (if the automation is not removed):

• 📱 At Mi Home, go to Profile → Settings → Smart home;
• 🔄 Choose Reset Smart Home Settings;
• ⚠️ Confirm action – all automations will be removed, but devices will remain connected.

Step 3: Disable cloud sync (for advanced users):

• 🌐 In Mi Home, disable the option Cloud Sync in your account settings;
• 📵 This will prevent the recovery of old automations after reconnection;
• ⚠️ Disadvantage: You can’t control devices remotely.

💡

Even after removing the automations in Mi Home, they can recover the next app update.To avoid this, turn off the automatic Mi Home update in your phone's settings.

FAQ: Frequent questions about Xiaomi night light