Factual reference — lines, ANSI/BHMA grades, and what your Yale lock's signals mean.
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Yale is one of the oldest names in locking, tracing to Linus Yale Jr., whose mid-1800s pin tumbler cylinder designs underpin modern keyed locks, and to the Yale & Towne Manufacturing Company founded in 1868. Today Yale-branded residential smart locks in the United States and Canada, including the Assure line, are part of Fortune Brands Innovations, which acquired that business from ASSA ABLOY in June 2023; Yale remains an ASSA ABLOY brand in most other markets and in US commercial hardware. Homeowners encounter Yale mainly through Assure keypad and touchscreen deadbolts and levers, managed with the Yale Access app and sold through retailers, integrators, and alarm companies.
Locksmith Call Now is an independent referral service and is not affiliated with, endorsed by, or sponsored by Yale. Product facts below are drawn from manufacturer documentation.
| Line | Facts |
|---|---|
| Assure Lock 2 (YRD410, YRD420, YRD430, YRD450) | Yale's current residential deadbolt platform, offered as keyed (YRD410 push-button, YRD430 touchscreen) and key-free (YRD420 touchscreen, YRD450 keypad/touch) models. Key-free versions include 9V battery terminals below the keypad for emergency power. Modular smart modules add Wi-Fi, Z-Wave, or Matter connectivity through the Yale Access ecosystem. |
| Assure Lock SL and first-generation Assure Locks | The earlier slim-line touchscreen deadbolt family (YRD256 and related models), many still in service. They use the same code-based entry concept, with optional network modules for smart-home systems. Yale's support library maintains separate troubleshooting guides for these keypad models. |
| Assure Lever (YRL series) | A keypad lever lock for doors without a deadbolt cutout, such as some side and interior entry doors. It offers code-based entry with auto-relock behavior and works with the same Yale smart modules and app platform as the Assure deadbolts. |
| Yale Access app, Smart Module, and Connect Wi-Fi Bridge | Yale's residential smart locks are managed through the Yale Access app (a shared platform with August). Depending on model and module, locks support remote operation, entry codes for guests, auto-lock and auto-unlock, and integrations with major voice assistants and smart-home platforms. |
| Yale commercial hardware (nexTouch and mechanical lines) | Separately from the residential smart business, Yale commercial products, including nexTouch keypad locksets, mortise and cylindrical locks, and exit devices, serve offices and institutions and are documented through ASSA ABLOY's commercial channels in the Americas. |
Yale Assure model numbers (for example YRD430) appear on the product packaging and on a label on the lock's interior assembly; slide up or remove the interior battery cover and check the label near the battery compartment. The Yale Access app lists the model and firmware in the lock's settings. Older Assure and Real Living models print the YRD number on the interior escutcheon label as well. If you only know the look of the lock, Yale's support site groups guides by product photo and family.
What the lock is telling you — from manufacturer documentation (see support link below).
| Signal | Meaning | Next step |
|---|---|---|
| Settings gear icon lights white (Assure Lock 2 keypad) | Lock is operating correctly, per Yale's gear icon LED guide. | No action needed. |
| Settings gear icon lights amber | Lock batteries are low and need to be changed. | Replace with fresh alkaline batteries per the user guide; avoid mixing old and new cells. |
| Settings gear icon lights red | Lock batteries are critically low. | Replace the batteries immediately before the lock loses power. |
| Red gear icon with an X symbol on the keypad | The lock is jammed, per Yale's guide. | Reference the installation guide in the Yale Access app to correct the installation; check bolt and strike alignment. If jamming persists, an independent locksmith can realign the door hardware. |
| Keypad lights are dim and the lock stops responding after a while | Yale's troubleshooting guide attributes this to batteries without enough power. | Replace the batteries and confirm correct polarity in the battery case. |
| Lock chimes to accept the code, but the door will not open | Mechanical obstruction or a loose wire harness, per Yale's troubleshooting guide. | Check the door gap for foreign objects and confirm the wire harness is firmly connected to the interior assembly. |
| Door will not lock after installation | The lock likely needs to be handed (calibrated to the door's orientation). | Run the handing/calibration steps in the Yale Access app or printed guide; ensure the frame hole is at least 1 in. deep and 1 in. wide. |
| Lock is unresponsive and the door is locked (key-free YRD450/YRD420) | Batteries may be completely discharged. | Hold a 9V battery to the terminals below the keypad for backup power, enter your code, then replace the batteries. Keyed models can be opened with the mechanical key. |
| Lock accepts codes but will not automatically re-lock | Auto-Lock is disabled, or battery power is too low for motorized operation. | Enable Auto-Lock in the Yale Access app; if the gear icon is red, change the batteries. |
An independent locksmith can install Yale Assure deadbolts and levers, rekey the cylinders on keyed Assure models to match existing house keys, correct the door and strike alignment behind jam indications, and complete handing and calibration when a new lock will not throw its bolt. For key-free models with fully drained batteries, a pro can restore power safely and get you back inside without damaging the lock. LocksmithCallNow.com is a referral service and is not affiliated with Yale, Fortune Brands Innovations, or ASSA ABLOY.
Yale's support article explains the settings gear icon: white means the lock is operating correctly, amber means batteries are low, red means batteries are critically low, and a red gear with an X symbol on the keypad means the lock is jammed and the installation should be checked using the guide in the Yale Access app.
Yale's troubleshooting guide says key-free Assure Lock 2 models (YRD450/YRD420) have 9V battery terminals below the keypad. Touch a fresh 9V battery to the terminals, enter your entry code while it is powered, then replace the internal batteries. If that fails, a local locksmith can help without damaging the door.
Per Yale's guide, a lock that will not throw the bolt after installation usually needs to be handed, meaning calibrated to your door's swing direction. Yale also notes calibration can fail if the strike hole in the frame is less than 1 in. deep and 1 in. wide. Redo handing per the app instructions.
Since June 2023, the Yale and August residential smart lock business in the US and Canada belongs to Fortune Brands Innovations, following ASSA ABLOY's divestiture. Support for Assure locks is provided through the Yale Home support site and the Yale Access app. Yale commercial hardware remains part of ASSA ABLOY.