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The short answer: Installing the August Wi-Fi Smart Lock (4th Gen) is a DIY-friendly process that typically takes 30 to 60 minutes. You’ll need a screwdriver, your existing deadbolt, and the August app. The lock replaces only the interior thumb turn, leaving your exterior keypad and key intact. After mounting, you calibrate through the app, connect to Wi-Fi, and set up access codes and automations.
Before you start, unbox your August Wi-Fi Smart Lock (4th Gen). Inside, you’ll find the smart lock body, mounting plate, screws, adhesive strips (for alignment), and a quick-start guide. You’ll also need a Phillips screwdriver, and optionally a level to ensure straight mounting. The lock works with your existing deadbolt, so you don’t need to replace the entire lock set. Check that your door is compatible: it should have a standard deadbolt with a thumb turn on the interior side, and a door thickness between 1.25 and 2.125 inches. If you’re unsure, measure the backset (the distance from the edge of the door to the center of the deadbolt hole), which should be 2-3/8 or 2-3/4 inches.
First, download the August app from the App Store or Google Play and create an account. Then, remove the existing interior thumb turn from your deadbolt (usually held by two screws). Keep the screws safe. Next, take the mounting plate and align it so that the tab fits into the hole where the thumb turn was. The plate should sit flush against the door. Use the provided screws to attach the plate, but do not overtighten. If the plate doesn’t align perfectly, use the adhesive strips to adjust the position slightly. After the plate is secure, slide the smart lock onto the plate. It should click into place. The lock’s tailpiece will engage with the deadbolt mechanism. Once attached, install a fresh set of AA batteries (included) into the back of the lock. Press the reset button if prompted, then proceed to app setup.
Open the August app and tap the plus icon to add a new device. Select ‘August Smart Lock’ and follow the on-screen instructions. The app will ask you to press the button on the lock to confirm it’s powered. Then, it will search for the lock via Bluetooth. Make sure your phone’s Bluetooth is on and you are near the door. Once paired, the app will prompt you to connect to your 2.4 GHz Wi-Fi network. Note that the August lock does not support 5 GHz networks. Enter your Wi-Fi password and wait for the connection. After Wi-Fi setup, the app will guide you through calibration. This involves the lock turning the deadbolt to detect the correct ‘locked’ and ‘unlocked’ positions. Follow the prompts, and the lock will perform a series of rotations. Once calibration is complete, test the lock manually and through the app.
With the lock installed, you can now manage access. In the app, you can create virtual keys for family and friends, set up temporary codes for guests, or schedule auto-lock and auto-unlock. For example, set Auto-Lock to engage 30 seconds after the door closes. You can also enable DoorSense to know if your door is open or closed, which requires the separate DoorSense sensor (sold separately). For hands-free entry, use the app’s geofencing to unlock when you arrive home. These features add convenience and security. If you want to explore other smart lock options, check out our best door locks guide for comparisons.
If the lock doesn’t turn smoothly, check alignment: loosen the mounting plate screws slightly and adjust. If the app can’t connect, ensure Bluetooth is on and you are within 30 feet. For Wi-Fi issues, restart your router and make sure you’re on a 2.4 GHz network. Some users experience battery drain; use high-quality alkaline batteries and avoid extreme temperatures. If the lock seems stuck, remove it and reattach, then recalibrate. If problems persist, consult August’s support resources or contact customer service. Always ensure the deadbolt moves freely before installation; if it’s sticky, lubricate it.
Before purchasing the August Wi-Fi Smart Lock (4th Gen), confirm that your door meets the following requirements. The lock is designed for standard residential deadbolts, but not all doors are compatible. First, check the door thickness: it must be between 1.25 and 2.125 inches. Second, measure the backset, which is the distance from the edge of the door to the center of the deadbolt hole. The backset should be either 2-3/8 inches or 2-3/4 inches. Third, inspect the interior thumb turn. The lock replaces the thumb turn, so your deadbolt must have a removable interior thumb turn (not a keyed cylinder on both sides). Fourth, ensure the deadbolt itself operates smoothly. If it sticks or requires force to turn, the smart lock may struggle to operate it, leading to calibration errors or battery drain. Fifth, consider the door’s material and weather exposure. The lock is designed for exterior doors, but extreme temperatures can affect battery life. Finally, check the mounting plate compatibility: the August lock uses a universal mounting plate that fits most standard deadbolts, but some brands with unusual shapes may require an adapter. If you have a mortise lock or a non-standard deadbolt, the August lock may not fit without modifications. Always consult the manufacturer’s compatibility guide or contact August support if you are unsure.
To keep your August Wi-Fi Smart Lock (4th Gen) working reliably, follow these maintenance practices. Replace the batteries proactively: the app will notify you when battery levels are low, but as a rule, use high-quality alkaline batteries and replace them every 6 to 9 months, depending on usage. Avoid rechargeable batteries, as they often have lower voltage and can cause erratic behavior. Clean the lock’s exterior and interior surfaces with a dry or slightly damp cloth. Do not use harsh chemicals or abrasive cleaners, which can damage the finish. Periodically check the mounting plate screws and tighten them if they become loose. Lubricate the deadbolt mechanism annually with a graphite or silicone-based lubricant to ensure smooth operation. Keep the lock’s firmware updated through the August app; updates often include performance improvements and security patches. If you live in an area with extreme temperatures, consider insulating the door or adding a storm door to protect the lock. Finally, test the lock’s manual and app functions monthly to catch any issues early. If you notice the lock becoming sluggish or unresponsive, recalibrate it through the app. These simple steps will extend the life of your smart lock and prevent common problems.
Many installation issues stem from a few avoidable mistakes. First, do not overtighten the mounting plate screws. Over-tightening can strip the screws or warp the plate, causing alignment problems. Second, ensure the mounting plate is perfectly centered and flush against the door. If it is crooked, the lock may not engage the deadbolt correctly. Third, do not skip the calibration step. Calibration teaches the lock the exact locked and unlocked positions; skipping it leads to incomplete locking or unlocking. Fourth, verify that your Wi-Fi network is 2.4 GHz. The lock does not support 5 GHz networks, and attempting to connect to one will fail. Fifth, do not install the lock on a door with a sticky or misaligned deadbolt. Fix the deadbolt first, or the smart lock will struggle and drain batteries quickly. Sixth, avoid using the adhesive strips as a permanent mounting solution; they are only for temporary alignment. Always secure the plate with screws. Seventh, do not ignore the tailpiece. The tailpiece must engage with the deadbolt mechanism; if it doesn’t, the lock will spin freely without turning the deadbolt. Finally, do not forget to test the lock thoroughly after installation, including manual key use, app control, and auto-lock features. Catching these mistakes early will save you time and frustration.
A: Yes, the 4th Gen has built-in Wi-Fi, so it connects directly to your home network. You don’t need a separate hub. However, you’ll need the August Connect only for older models.
A: Absolutely. The exterior side of your deadbolt remains unchanged, so you can use your key as a backup. The smart lock only replaces the interior thumb turn.
A: You can easily uninstall the lock and reinstall it on a compatible deadbolt. Just reset the lock in the app and pair it again. The mounting plate is reusable, but you may need new adhesive strips.
In conclusion, installing the August Wi-Fi Smart Lock (4th Gen) is a straightforward project that most DIYers can handle. The key is to ensure compatibility and follow the app’s instructions carefully. With your new smart lock, you’ll enjoy keyless entry, remote access, and peace of mind. If you’re still deciding on a lock, our best door locks guide can help you compare options.
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