August Smart Lock Error Code 4: How to Fix It
Easy 5-10 minutes Medium Severity
Verified June 2026
- Error Code
- 4
- Brand
- August
- Product Type
- smart_lock
- Severity
- Medium
- DIY Difficulty
- Easy
- Estimated Fix Time
- 5-10 minutes
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Tools You'll Need
- Smartphone with August app
How to Fix Error Code 4
-
Open the August App
-
Access Lock Settings
-
Adjust Geofence Radius
Make sure the geofence radius does not include areas where you don't want auto-unlock to trigger (e.g., if you live in an apartment, keep it small enough to avoid unlocking for neighbors). -
Test the Geofence
-
Reset If Needed
Always have a physical key or alternative access when resetting a smart lock.
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When to Call a Professional
If you've increased the geofence radius and the error continues, or if you cannot access the lock settings in the app, contact August support for further assistance.Frequently Asked Questions
What does August error code 4 mean?
It means the geofence area is too small for reliable auto-unlock or location detection. Increase the geofence radius in the app.
How do I fix error code 4 on August Smart Lock?
Open the August app, go to lock settings, find the geofence option, and increase the radius to at least 150 feet. Save the changes and test.
Why does my August lock say geofence too small?
The geofence radius is set too small to trigger reliably. This can happen if you set it very low to save battery or avoid false triggers. Increase it as instructed.
Can error code 4 be fixed without the app?
No, the fix requires adjusting settings in the August app. Ensure your phone has the app installed and is connected to the lock.
Does error code 4 affect auto-unlock?
Yes, it can prevent auto-unlock from working properly because the geofence is too small to detect your arrival reliably.