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What actions should I take if the battery of my “smart lock” depletes and potentially results in problems with the associated app and keypad? This is my main concern.

Depending on the model, you can unlock the door using a physical backup key or provide emergency power just enough to type in your code. 

So in this article, I’ll provide model-by-model specific instructions on what to do if your Yale lock’s batteries are dead and you’re locked out. 


Before we head into the model-specific and step-by-step instructions, here are a couple of things you need to know about unlocking Yale locks with a dead battery.

  • Yale smart locks offer a couple of solutions to ensure you can access your home even when the batteries are dead.
  • If it’s a keyed model with a cylinder, you probably have the physical key which can act as a manual override. For keyless models, you’ll have the option to jumpstart the lock using a 9-v battery.
  • You can use the physical key to open the lock to retract the bolt, simply open it the same way as you would a traditional lock
  • Some Yale Smart Lock models come with an emergency power terminal in the form of 9V battery contacts located beneath the keypad or at the bottom of the lock.
  • So in case the lock's battery dies, you can connect a 9V battery to these contacts, which temporarily powers up the lock, allowing you to input your entry code and unlock the door.
  • It's essential to replace your Yale smart lock's batteries as soon as possible after using one of these methods.
  • Regularly keeping an eye on battery life and promptly addressing any low-battery notifications is vital to maintain your smart lock's functionality and security.
  • If you don’t have the physical key on you, or the 9V battery backup doesn’t seem to get the lock to restart, it’s best to find an alternative entrance or call a locksmith.
  • If the lock doesn’t seem to work after replacing the batteries, make sure to perform a factory reset before contacting customer support. 

So now, let’s jump into the specific models and how to unlock them.

Process 1: Mechanical Override Via the Physical Key

Compatible models: 

  • YRD226-CBA-619
  • YRD216-CBA-619
  • YRD420-WF1-619
  • YRL226-WF1-619
  • YRL216-WF1-619
  • YRD210/YRL210
  • YRD220
  • Linus Smart Lock

Essentially, any smart lock model that includes a keyed cylinder or attaches to the existing cylinder in your door. 

To open the door using the mechanical override:

  1. Insert your physical key into the keyhole
  2. Rotate it clockwise or anticlockwise 90 degrees to unlock (depending on your handing direction)
  3. Push the door open or pull down the lever to unlock the door.
Yale 1 Mechanical Key Override
Performing a mechanical override using the physical key

Process 2: 9V Battery Jump Start

Compatible Models: 

  • YRD256-CBA-619
  • YRL256-WF1-619
  • YRL236-WF1-619
  • Nest and Yale 
  • YRD246/YRD446
  • Conexis L1/L2
  • Keyless Connected

For keyless modes, the process is a bit different since you need to use a 9V battery on the outside contacts to provide power.

I recommend keeping a spare 9V battery in your garden or car, just in case it's needed.

Here’s how to do it:

  1. Locate the 9V contacts in your smart lock. Most often, it's at the bottom of the touchpad or on the underside of the smart lock outdoor panel.
  2. Insert the 9V battery into the contacts, and make sure you position the contacts properly. The battery should fit tightly into the contacts without loosening up.
  3. Wait for the lock to restart, if it starts up and then the keypad dies, don’t worry, just press the Yale logo button or swipe your palm across to reactivate the keypad. 
  4. Then, type in your entry code to unlock the door and regain access. The app might be slower, so always try to enter the code manually whenever possible.

Please note that in some alternate models of the Yale Conexis, you might have to pull down on the emergency cover. 

Yale 12 alternate jump start


1. Can I Rekey the Cylinder on a Yale Lock?

Most models do not include a cylinder that can be rekeyed. However, you will often get a couple of physical keys right out of the box, so make sure to keep the backup in a secure location should you need it.

2. Can I Replace the Cylinder on a Yale Lock?

Yes, in most Assure-style models, you can replace the cylinder or even install a lock on top of the existing cylinder (such as the Yale Linus). However, make sure to check the model user guide and contact a locksmith before you go through with it. 

3. How Do I Know That the Batteries Need Replacing in My Yale Smart Lock?

Most of the time, the Yale app will notify you whenever the batteries are low. You might also get an e-mail or red-colored warning beeps from the lock whenever you enter a code.

Regardless, to prevent future lockouts, make sure to replace the batteries annually and use fresh alkaline ones. 


As long as you have a spare 9V battery or the physical key on hand, unlocking a Yale door with a dead battery is a pretty straightforward process. 

However, it’s always a good idea to ensure you have multiple entrances into your home, especially with a keyless smart lock that might glitch out, even if you use a spare 9V to provide emergency power. 

So always make sure to check the battery condition regularly and replace them as soon as the low battery indicators pop up. 


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