Missing motion alerts on your Arlo Ultra 2 can leave your home unprotected when you need notifications most. Whether your camera detects motion but sends no push notification, or motion detection fails entirely, this guide covers the most common causes and fixes for Arlo Ultra 2 motion alerts not working. Follow these troubleshooting steps in order to restore reliable motion notifications to your phone or email.
Check Arlo App and Notification Settings
Before adjusting camera hardware, verify that software settings are configured correctly. Many Arlo Ultra 2 motion alerts not working cases trace back to disabled notifications or incorrect modes.
1
Enable Push Notifications in the Arlo App: Open the Arlo Secure app, tap Profile → Settings → Notifications. Ensure push notifications are toggled on for your account. Check that your phone's system settings also allow Arlo notifications (iOS: Settings → Notifications → Arlo; Android: Settings → Apps → Arlo → Notifications).
2
Verify Motion Detection Is Armed: Tap Mode at the bottom of the app, then select your base station or camera. Confirm the active mode (Armed, Schedule, or Geofencing) has motion detection enabled with the toggle switched on. Test by switching to Armed mode temporarily.
3
Check Motion Sensitivity and Zones: Select your Ultra 2 camera, tap the gear icon → Motion Detection. Set sensitivity between 80-100 for testing. If using Activity Zones, ensure the zone covers the area where motion occurs. Disable zones temporarily to test if they are misconfigured.
Inspect Camera Hardware and Positioning
Physical factors can prevent your Arlo Ultra 2 from detecting motion even when settings appear correct. These steps address environmental and hardware issues that stop alerts from triggering.
4
Confirm Camera Power and Wi-Fi Signal: Check the battery level in the app (tap device → Device Settings → Battery). Charge to 100% if below 20%. Verify signal strength: tap the Wi-Fi icon next to your camera name—aim for 2-3 bars. Weak signal causes delayed or missed alerts.
5
Clean the PIR Sensor and Lens: The Arlo Ultra 2 uses a passive infrared (PIR) sensor for motion detection. Gently clean the front of the camera with a microfiber cloth, paying special attention to the small dome near the lens where the PIR sensor sits. Dirt, spider webs, or condensation block heat detection.
6
Adjust Camera Height and Angle: Mount the camera 7-10 feet high with a slight downward angle. Avoid pointing directly at heat sources (HVAC vents, windows with sun exposure) or reflective surfaces. Motion moving directly toward the camera is harder to detect than side-to-side movement across the field of view.
Warning: Do not factory reset your Arlo Ultra 2 unless all other steps fail. Resetting erases all settings, activity zones, and cloud recordings. Document your current configuration before proceeding with any reset.
Advanced Troubleshooting and Account Fixes
If basic settings and hardware checks do not resolve Arlo Ultra 2 motion alerts not working, these advanced steps address firmware bugs, subscription issues, and account conflicts.
7
Update Firmware and Restart Devices: In the Arlo app, go to Settings → My Devices → select Ultra 2 → Device Info → Firmware. Install any pending update. Power cycle your SmartHub or base station by unplugging for 30 seconds, then remove and reinsert the camera battery for 10 seconds.
8
Verify Arlo Secure Subscription Status: Smart notifications (person, vehicle, animal, package) require an active Arlo Secure plan. Tap Profile → Subscription in the app. If expired, motion alerts may stop entirely or revert to basic detection. Renew or update payment method if needed.
9
Re-sync Camera to Base Station: If the camera shows as offline intermittently, remove it from your account (Device Settings → Remove Device), then press the sync button on the SmartHub until the LED blinks blue. Press the camera's sync button for 2 seconds until the blue LED blinks. Re-add through the app.
Frequently Asked Questions
Why does my Arlo Ultra 2 detect motion but not send alerts?
This usually means motion detection works but notifications are blocked. Check your phone's Do Not Disturb settings, verify Arlo app notification permissions, and ensure your Arlo Secure subscription is active. Also confirm the camera is not in Disarmed mode or a schedule that disables alerts.
Can extreme weather cause Arlo Ultra 2 motion alerts not working?
Yes. Temperatures below -4°F (-20°C) or above 113°F (45°C) affect PIR sensor accuracy. Heavy rain, snow, or fog can also block infrared detection. The camera is weather-resistant but not immune to environmental interference. Position under an eave if possible and wait for conditions to improve.
How do I test if my Arlo Ultra 2 motion alerts are working?
Set sensitivity to 100, disable all activity zones, and ensure Armed mode is active. Walk across the camera's field of view at 10-15 feet distance. Check the app Library for recordings—if clips appear without notifications, the issue is notification delivery, not motion detection. If no clips record, the PIR sensor or firmware may need attention.
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