How to Program a Subaru Key Fob: A Step-by-Step Guide

For Subaru owners looking to replace a lost key fob or program a new one, the question often arises: can this be done at home? For those with newer Subaru models, programming typically requires the expertise of an authorized Subaru dealership service center. However, if you own an older Subaru, you might be able to program a new key fob yourself. This guide from Subaru Lakeland will walk you through the process of how to program your Subaru key fob in your own garage.

Before attempting to program your Subaru key fob, it’s crucial to verify if your key fob type is programmable by the vehicle owner. These DIY-programmable fobs are generally teardrop-shaped. If your key fob matches this description, follow the instructions below to program your Subaru key fob.

Finding Your 8-Digit Subaru Key Fob Programming Code

To initiate the Subaru key fob programming sequence, you’ll first need to locate your key fob’s 8-digit programming code. Here’s how to find it:

1. Carefully open the key fob case to access the internal transmitter circuit board.
2. Locate the transmitter circuit board and identify one or two series of 8-digit numbers printed on it.
3. Write down the first 8-digit number sequence on a piece of paper for easy access during the programming steps.
4. Reassemble the key fob case securely.
5. Enter your Subaru and sit in the driver’s seat. Ensure all doors are fully closed and the vehicle’s ignition is turned off.

Alt text: Opening a teardrop-shaped Subaru key fob to reveal the transmitter circuit board for programming.

Programming Your Subaru Key Fob: Entering the Code

Once you have your 8-digit Subaru key fob programming code, you can proceed with the programming sequence. Follow these steps precisely and in a timely manner:

1. Open the driver’s side door, and use the door button control to unlock all doors. Then, close the driver’s side door.
2. Insert your Subaru key into the ignition.
3. Turn the ignition key to the “ON” position, activating the electrical systems, but do not start the engine. Immediately turn the key back to the “OFF” position. Repeat this “ON” to “OFF” key cycling rapidly ten times in succession.
4. Listen for a chime from the instrument panel. This chime indicates that you have successfully completed the ten key cycles.
5. Open and then close the driver’s side door again. You should hear a second chime, and the vehicle’s dome lights will flash as confirmation.
6. After the second chime and dome light flash, you will have approximately 45 seconds to input the 8-digit transmitter number into the car’s computer. Use the lock/unlock button on the driver’s side door to enter the code while the chime continues.

Now, program the 8-digit number sequence using the door lock/unlock buttons:

1. Locate the lock and unlock buttons on the driver’s side door panel, typically positioned near the power window controls.
2. For the first digit of your 8-digit code, press the “lock” button the corresponding number of times indicated by the digit. Immediately after pressing the lock button(s), press the “unlock” button once.
3. Repeat step 2 for each subsequent digit in your 8-digit code sequence.
4. Listen for an audible chime from outside the vehicle. This chime serves as confirmation that each digit sequence has been correctly entered.
5. Repeat steps 2 and 3 to re-enter the entire 8-digit number sequence for verification. If the sequence is correctly re-entered, you will hear the vehicle’s door locking system engage with a click.
6. Open and close the driver’s door, then press either the “lock” or “unlock” button on your newly programmed key fob to test.
7. Remove the key from the ignition. You should hear another chime sound.
8. Open and close the driver’s door one last time. Within approximately five seconds, your Subaru key fob should be fully functional. Test all buttons on the key fob to ensure proper programming.

Alt text: Close-up of Subaru car door panel showing the lock and unlock buttons used for key fob programming.

Subaru Key Fob Battery Replacement for Newer Models

While newer Subaru key fobs may not be DIY programmable, battery replacement is a straightforward task you can perform yourself. If you drive a newer, rectangular-shaped Subaru key fob and need to replace the battery, follow these steps:

Battery Replacement Steps (Rectangle Shape, 2032 Battery)

1. On the rear of the key fob, find the small silver tab. Push and hold this tab to release the mechanical key. Pull the metal key out to remove it.
2. Locate the slot where the mechanical key was just removed. Insert the tip of the removed key or a small flathead screwdriver into this slot, which is the gap between the front and back halves of the key fob casing.
3. Gently twist the key or screwdriver to carefully pry open the key fob cover, separating the front and back pieces.
4. Identify the battery inside the key fob. It might be located on either side of the transmitter circuit board.
5. Carefully remove the old battery. Take note of the battery type (typically a 2032 battery) and the orientation (positive side up). Insert the new 2032 battery, ensuring the correct side is facing upwards.
6. Carefully reassemble the key fob by snapping the two halves of the case back together. Re-insert the metal mechanical key until it clicks into place.

Alt text: Disassembling a modern rectangular Subaru key fob to access and replace the internal battery.

Need Further Assistance?

If you have further questions about how to program a Subaru key fob, or if you own a newer Subaru model and require key fob programming or replacement, don’t hesitate to contact our Subaru parts department. Our knowledgeable team can provide detailed information and assist with any Subaru key fob concerns you may have.

Our parts store also stocks a wide range of genuine OEM Subaru parts and accessories. Feel free to order the parts you need online from the convenience of your home, or contact us directly for personalized assistance or to inquire about our current parts specials.