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Yale Assure Lock 2 Plus - User Manual

Yale Assure Lock 2 Plus
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P/N YRD450-N-MNL-0039 Rev A
Assure Lock 2 Plus
Key-Free YRD450N
Trusted Every Day
Download Yale Access App
Create an account if you don’t already have
one, and tap “Set Up a Device”.
Note: If you have an account with the August App, use the same username and
password for the Yale Access App.
Install and Set Up Your Lock
Follow the step-by-step Installation and Setup Guide in this manual, or
refer to the app installation guide with helpful videos.
Note: If you use the app, please tear off the Door Checker and the Marking
Template (pages 58) to use when prompted.
Use Your Lock
Operate your lock with your phone, issue permanent or temporary entry
codes and more. With home key, lock or unlock your lock with iPhone®
or Apple Watch®.
ISL222500102

Table of Contents

Questions and Answers

  • O
    owatersAug 15, 2025
    How to fix Yale Door locks that don't respond?
    • W
      waynebowmanAug 15, 2025
      If your Yale Door lock isn't responding, here are a few things to try: First, press the Yale logo to activate the keypad. Ensure you're making good contact with the logo. If the keypad numbers appear, see if they respond when pressed. Then, check that the batteries are correctly installed in the battery case. If needed, replace the batteries. Lastly, make sure the keypad wire is fully connected and not pinched.
  • S
    susan95Aug 18, 2025
    What to do if my Yale Door lock batteries are completely drained?
    • A
      Anthony CarlsonAug 19, 2025
      If your Yale Door lock batteries are completely drained, replace all four batteries with new AA alkaline batteries. If you need to open the lock from the outside while the batteries are drained, place a 9-volt alkaline battery against the contacts at the bottom of the lock. Wait a moment, then press the logo to wake up the lock and enter your entry code while holding the battery in place.
  • K
    kara32Aug 21, 2025
    What to do if my Yale Door lock is on for a while then shows no reaction and the lights dim?
    • D
      Danielle WelchAug 22, 2025
      If your Yale Door lock is on for a while, then shows no reaction and the lights dim, it means the batteries don't have enough power. Replace the batteries.
  • S
    scrawfordAug 26, 2025
    Why won't my entry code register on my Yale Door lock?
    • L
      Linda DouglasAug 26, 2025
      If your entry code won't register on your Yale Door lock, try these steps: If the low battery indicator is lit, replace the batteries. Ensure your entry code is 4 to 8 digits long and that you're using different entry codes for different users. Also, the entry code must be entered while the keypad is active; tap the Yale logo to wake it up and enter the code within 5 seconds.
  • J
    Jared NelsonAug 28, 2025
    What to do if my Yale Door lock chimes but the door won't open?
    • C
      Cindy DavidAug 29, 2025
      If your Yale Door lock chimes indicating code acceptance but the door won't open, check for any foreign objects between the door and the frame. Also, make sure the wire is firmly connected to the interior lock.
  • M
    Matthew NobleSep 1, 2025
    What does it mean if my Yale Door lock says 'Invalid Code'?
    • J
      Jason JacksonSep 1, 2025
      If your Yale Door lock displays an 'Invalid Code' error after entering your code, first verify that the code you entered is a valid, previously programmed, 4 to 8 digit code. Also, check that the Vacation mode might be on. Only an admin user can switch vacation mode to normal in the app.
  • K
    Karen HaneySep 4, 2025
    What does it mean if my Yale Door lock responds 'Wrong Number of Digits'?
    • R
      Roberto SilvaSep 4, 2025
      If your Yale Door lock responds 'Wrong Number of Digits', it means that the digits entered were incorrect or incomplete. Re-enter the correct code followed by the Check key.
  • E
    Eric RichardsonSep 7, 2025
    How to fix Yale Assure Lock 2 Plus Door locks when the deadbolt does not extend with the keypad?
    • C
      Connie SandersSep 7, 2025
      If the deadbolt on your Yale Door lock doesn't extend when locking the door with the keypad, it could be that the lock was not handed properly. To fix this, find the setting called “Lock Handing”.
  • E
    Elizabeth WilliamsSep 12, 2025
    Why does my Yale Door lock operate but makes no sound?
    • V
      Vanessa BakerSep 12, 2025
      If your Yale Door lock operates but makes no sound, check in the app settings if the volume is set to off.

Summary

In the Box

Door Measurement Guide

Door Checker Part 1: Measure Door Dimensions

Measures door clearance, thickness, and backset for lock compatibility.

Door Checker Part 2: Measure Boreholes

Measures face bore and edge bore/strike pocket for installation.

Door Marking Templates

Marking Template: 2-1;8 Inch Face Bore

Template for marking door holes for 2-1/8" face bore diameter.

Marking Template: 1-1;2 Inch Face Bore

Template for marking door holes for 1-1/2" face bore diameter.

Installation and Setup Guide

Remove Existing Deadbolt

Instructions for removing the old deadbolt from the door.

Check Door Measurements

Guidelines for measuring door and frame for compatibility.

Make or Adjust Door Holes

Steps to modify door or frame holes using templates.

Install Deadbolt Latch

How to install the deadbolt latch mechanism.

Install Exterior Keypad

Mounting the external keypad onto the door.

Install Mounting Plate

Attaching the interior mounting plate to the exterior keypad.

Attach Wire Cable to Interior Lock

Connecting the wire harness from exterior to interior lock.

Install Interior Lock

Installing the interior lock mechanism onto the mounting plate.

Test Thumbturn Operation

Verifying the internal thumbturn operates the deadbolt.

Install Optional Yale Smart Module

Guide for inserting the optional Yale Smart Module.

Install Optional DoorSense Sensor

Instructions for installing the DoorSense magnetic sensor.

DoorSense Surface Mount

Steps for surface mounting the DoorSense sensor.

DoorSense Flush Mount

Steps for flush mounting the DoorSense sensor.

Install Batteries & Setup with App

Installing batteries and initiating setup with the Yale Access app.

Using Your Lock

Connecting to Your Lock

Explains Bluetooth and Wi-Fi connectivity for the lock.

LED Alerts

Details the meaning of different LED indicator lights on the lock.

Resetting Lock to Factory Defaults

Procedure for resetting the lock to original factory settings.

Lock Features

Overview of lock capabilities: DoorSense, Home Key, Auto-Lock.

App Settings

Configuration options within the Yale Access mobile application.

Lock Operations Troubleshooting

Solutions for common lock operation and response issues.

Hardware Troubleshooting

Guidance for resolving physical or mechanical lock problems.

Yale Assure Lock 2 Plus Specifications

General IconGeneral
Lock TypeDeadbolt
Power Source4 AA Batteries
Finish OptionsSatin Nickel, Oil Rubbed Bronze, Black Suede
Battery LifeUp to 1 year
Door Thickness1-3/8" to 2-1/4"
Bump Key ProofYes
ConnectivityBluetooth, Wi-Fi
CompatibilityAmazon Alexa, Google Assistant, Apple HomeKit
KeypadYes, touchscreen
Smartphone AppYale Access App
Weather ResistanceYes
Backset2-3/8" or 2-3/4"
Auto-LockYes
Backup Power9V Battery Terminal
User CodesUp to 25 (unlimited with app)

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