How to Install a Patio Door Lock on Andersen Sliding Doors

By Yale Locks | Official Online Store | Yale Home | Published: 2026-10-19

Category: How-to Guides

Learn how to install the Yale Assure Lock for Andersen Patio Doors yourself with clear steps, common mistakes, and pro tips.

Quick answer

Installing the Yale Assure Lock for Andersen Patio Doors takes about 30 minutes with just a screwdriver and drill. Follow these steps to replace your existing lock without additional wiring or smart home hubs.

What you need before starting

The Yale Assure Lock for Andersen Patio Doors is a standalone unit, meaning it works right out of the box without a separate smart home system. Before you begin, check that your Andersen patio door has a standard prep for this lock and that you have the correct finish to match your door. The lock is available in Black, Satin Nickel, and White.

You will need a Phillips screwdriver, a drill with a 1/8-inch bit (for pilot holes if needed), and a tape measure. No wiring or additional hardware is required.

Common mistakes to avoid

The most frequent error during installation is misaligning the lock body with the Andersen door's pre-drilled holes. Take a moment to verify that the lock's mounting plate sits flush against the door face before tightening screws. Overtightening can strip the threads, especially in aluminum or composite door frames.

Another mistake is skipping the battery test before fully mounting the lock. Always insert the batteries and test the keypad function while the lock is still loose so you can adjust if needed.

Step-by-step installation

Remove the existing lock: Unscrew and remove your current patio door lock from the inside of the door. Keep all screws and the mounting plate if they are reusable, but the Yale lock comes with its own hardware. Check that the existing screw holes align with the new lock's mounting plate. If they don't, you may need to drill new pilot holes.
Attach the mounting plate: Position the Yale Assure Lock mounting plate over the Andersen door's pre-drilled holes. Use a level to ensure it is straight, then secure it with the provided screws. Do not overtighten. A crooked mounting plate will cause the lock body to bind against the door. Double-check alignment before driving screws fully.
Install the lock body: Slide the lock body onto the mounting plate from the inside of the door. The lock should snap or screw into place depending on your model. Connect the cable that runs through the door to the keypad on the exterior side. Make sure the cable is not pinched between the lock body and the door. A pinched cable can cause intermittent keypad failures.
Attach the exterior keypad: From outside, feed the cable through the door and connect it to the keypad. Secure the keypad with the provided screws. Test the keypad by pressing a few buttons to confirm the connection. If the keypad does not light up, disconnect and reconnect the cable. A loose connection is the most common cause of a dead keypad.
Insert batteries and program the lock: Open the battery compartment on the interior lock body and insert four AA batteries (not included). Follow the Yale app or on-lock menu to set your entry code and test the lock operation. Always perform a full lock cycle test (lock and unlock) before closing the door completely. This verifies the latch alignment and battery installation.

Product needed for this installation

Assure Lock for Andersen Patio Doors, Standalone: The Yale Assure Lock for Andersen Patio Doors is a standalone entry lock designed specifically for Andersen patio doors, available in Black, Satin Nickel, and White. This lock fits Andersen doors without extra adapters, and its standalone design means you don't need a separate smart home hub to use it.
Assure Lock for Andersen Patio Doors, Standalone