The Airbnb Host’s Emergency Guide: Smart Lock Problems & Backup Access Tips

What to Do When Your Smart Lock Fails: A Backup Strategy for Airbnb Hosts

Let’s face it: Smart locks are one of the best tools in your Airbnb hosting toolkit. They streamline self-check-ins, remove the hassle of managing physical keys, and help you run a smoother operation.

But what happens when your smart lock goes offline, loses power, or just… doesn’t work?

If you've ever received a late-night text from a confused guest standing outside your unit, you know how stressful this can be. Whether it’s a WiFi dropout, battery failure, or tech hiccup, the key (pun intended) is being prepared before problems arise.

That’s why we’ve created this guide focused on Smart Lock Problems & Backup Access Tips, so you’re never caught off guard when tech fails and your guests need a way in.

At BNB Guardians, we’ve helped hosts develop reliable backup plans so their Airbnb business doesn’t crash when the tech does. Here’s how you can build a smart, scalable backup system for your smart locks, and keep your reviews glowing even when WiFi goes dark.

Why Do Smart Locks Fail?

Before we dive into solutions, let’s understand the common reasons smart locks might stop working:

• Dead batteries: Many locks are battery-powered and will shut down when drained.

• WiFi outages: If your lock depends on WiFi, an internet issue can knock it offline.

• Mechanical wear and tear: Over time, the motor or bolt can jam.

• User error: Guests unfamiliar with tech might input the wrong code—or get frustrated and give up.

• Weather or tampering: External conditions can affect performance or damage the unit.

The good news? Every one of these issues has a solution.

Step 1: Always Keep a Physical Backup Key (Smart Lock Problems & Backup Access Tips)

Even the most high-tech systems need an old-school backup.

• Install a lockbox: Place a combination lockbox somewhere discreet but accessible near the property.

• Share instructions wisely: Only give out the lockbox code if there’s a real emergency.

• Have a local backup: If you're managing remotely, give a spare key to someone you trust—a cleaner, cohost, or neighbor.

At BNB Guardians, we always advise hosts to have at least two ways to access their property in case of smart lock failure.

Step 2: Set Up a Traditional Lockbox as a Failsafe

Smart locks are great, until they’re not. That’s why we recommend pairing them with a manual backup.

• Use a durable, tamper-resistant lockbox.

• Change the combo between stays.

• Hide it well but accessibly—think behind a planter or inside a secured outdoor utility closet.

This extra layer of access is a game-changer when you or a guest need to get in fast.

Step 3: Use Offline Smart Lock Features to Your Advantage

Many smart locks allow pre-set codes directly on the device even when they’re offline.

• Set a backup code for emergencies.

• Make sure it’s different from the main guest code.

• Manually delete or rotate codes after each stay.

At BNB Guardians, we love smart locks that offer offline functionality and remote unlocking. Many of our hosts use Guesty to automate code generation and keep things seamless even without WiFi.

Step 4: Maintain Your Smart Lock Like a Pro

Avoid most failures with some proactive TLC:

• Change batteries regularly, don’t wait for the warning beep.

• Test it during turnovers to confirm it’s working after each guest.

• Update the software to fix bugs and improve security.

This is part of our Airbnb optimization checklist, we teach hosts how to build simple systems that prevent tech issues from ruining their guest experience.

Step 5: Help Guests Use the Lock with Confidence

Your guests aren’t tech experts, and they don’t need to be.

• Send a welcome guide with step-by-step lock instructions and photos.

• Make it easy to reach you or your team if things go sideways.

This is part of our Airbnb guest communication strategy when guests feel supported, even tech issues become minor bumps, not deal-breakers.

Step 6: Lean on Your Support Network

Sometimes, you’ll need boots on the ground.

• Have a reliable property manager or cleaner nearby who can help with emergency access.

• Know how to contact the lock manufacturer’s support in case of technical failure.

• Save critical numbers in your phone, and in the hands of your backup team.

Whether you manage one unit or ten, having a dependable network is key to stress-free Airbnb management.

Step 7: Create an Alternate Entry Point

If your property has more than one entry, outfit a secondary door with a traditional lock.

• Make sure it's less obvious or publicly accessible.

• Store its key in your emergency lockbox or with a trusted person nearby.

This added layer of security can be a lifesaver when the front door becomes unusable.

Final Thoughts: Smart Hosts Have Smart Backup Plans

Smart locks are amazing tools for modern Airbnb hosting, but no system is 100% foolproof. The key is not perfection, it’s preparation.

At BNB Guardians, we help hosts create systems that reduce stress, scale with confidence, and keep guests happy even when tech fails.

Need Help With Airbnb Tech, Strategy, or Scaling?

Join our Airbnb Super Host Academy on Skool, or book a call to see how we can help you launch, grow, or optimize your Airbnb business.

Whether you’re just getting started or looking to grow without burning out, BNB Guardians has your back!