Losing or damaging your Subaru key fob can disrupt your day. While your first thought might be to call the dealership, that often means a long wait and a significant bill.
The good news is that you can program a new Subaru key fob yourself. This guide on how to program a subaru key fob will walk you through the process, saving you time and money while putting you back in control of your vehicle’s security and convenience features.
Learning this simple skill empowers you as a car owner, turning a potential headache into a manageable task.
What Will You Need?
Before you begin, gather the following items to ensure the process goes smoothly:
- A new, unprogrammed Subaru key fob compatible with your vehicle’s model and year.
- Your vehicle’s ignition key.
- All existing key fobs for your vehicle (if you have them).
- A quiet place where you can focus without interruptions.
10 Easy Steps on How to Program a Subaru Key Fob
Follow these detailed steps carefully to successfully program your new key fob. This process involves a specific sequence of actions that must be performed within a set time frame. Reading through all the steps before you begin can help you understand the flow and timing required for success.
Step 1: Prepare Your Vehicle
Start by ensuring your Subaru is ready for the programming sequence. Close all doors, the trunk, and the rear gate. Sit in the driver’s seat and unlock all the doors using the master power lock switch located on the driver’s side door panel. This initial step sets the vehicle’s computer system to a neutral state, preparing it to accept new programming commands. It’s a simple but crucial action that prevents potential conflicts or errors in the subsequent steps. Take a moment to confirm every door is unlocked before you proceed, as a single locked door can disrupt the entire process.
Step 2: Insert and Remove the Key
Now, you will begin the key-cycling sequence. Take your ignition key and insert it into the ignition cylinder. Immediately turn it to the “ON” position—this is the position just before the engine cranks—and then turn it back to the “LOCK” (or “OFF”) position. You must complete this entire cycle, from insertion to removal, ten times within 15 seconds. The timing here is critical. The purpose of this rapid cycling is to signal to the vehicle’s Body Control Module (BCM) that you are initiating the key fob programming mode. Performing this action too slowly will cause the system to time out, and you will need to start over from the beginning.
Step 3: Open and Close the Driver’s Door
After completing the key-cycling sequence, you will hear a chime from your car. This chime is the confirmation that you have correctly entered programming mode. As soon as you hear it, you have 45 seconds to open and then close the driver’s side door. Do not lock it; simply perform the open-and-close action. This step acts as another security verification for the vehicle’s computer. It confirms that the person initiating the programming sequence is physically inside the car. This action must be completed smoothly and within the allotted time frame to keep the programming mode active for the next steps.
Step 4: Press the Fob’s Lock/Unlock Button
With the programming mode still active, take your new, unprogrammed key fob. Press and release the “Lock” or “Unlock” button on the fob one time. This action sends a signal from the new fob to the vehicle’s receiver. The car’s computer is now listening for this signal to register the unique code of the new remote. Hold the fob steady and press the button firmly. You are essentially introducing the new remote to your car’s system for the first time. This is the moment the “handshake” between the fob and the vehicle occurs, so ensure you press the button clearly.
Step 5: Listen for the Confirmation Chime
Immediately after you press the button on the new key fob, your vehicle should respond with another chime. This sound confirms that the new fob’s code has been successfully received and accepted by the vehicle’s computer. If you do not hear this chime, it means the signal was not registered correctly. This could be due to a dead battery in the new fob, an incompatible fob model, or an error in the previous steps. If no chime is heard, you will need to start the entire programming process again from Step 1.
Step 6: Repeat for Additional Fobs
If you have other key fobs that you wish to program or reprogram for the same vehicle, now is the time to do it. You must program all fobs, including any existing ones that were already working, during this single session. The system’s memory is cleared when you enter programming mode, so any old fobs will be deactivated unless they are reprogrammed now. For each additional fob, simply repeat Step 4 and Step 5: press the “Lock” or “Unlock” button on the fob and wait for the confirmation chime. Do this for every remote you want to be active.
Step 7: Finalize the Programming Sequence
Once you have programmed all your desired key fobs and heard the confirmation chime for each one, you need to exit the programming mode. To do this, open and close the driver’s door one more time. This action signals to the vehicle’s computer that you have finished programming all remotes. The system will then save the codes for the fobs you just registered. This step is what locks in the new information, so don’t forget it. After closing the door, the programming mode will be terminated.
Step 8: Remove the Key from the Ignition
After closing the driver’s door for the final time, the chime will sound several times, indicating that the programming mode has been successfully exited. Now, you can safely remove your key from the ignition. The entire programming process is now complete. The vehicle’s computer has stored the codes for your new fob(s) and has exited the special programming state. At this point, your vehicle should be back to its normal operational status, ready for you to test the newly programmed remotes.
Step 9: Test Your New Key Fob(s)
Exit the vehicle and close the driver’s door. Now, test the functionality of each key fob you just programmed. Press the “Lock,” “Unlock,” and “Panic” buttons on each remote to ensure they are all working correctly. Check that the doors respond as expected and that the panic alarm activates and deactivates properly. If you programmed multiple fobs, test them all individually. This step verifies that the process was a success and gives you peace of mind that your remotes are fully functional.
Step 10: Celebrate Your Success
If all the fobs are working as they should, congratulations! You have successfully programmed your Subaru key fob without a trip to the dealership. You’ve not only saved money but also learned a valuable skill. Take a moment to appreciate the work you’ve done. This simple procedure has restored full convenience and security to your vehicle. Remember to store any non-working or old fobs away from the vehicle to avoid any confusion or potential security risks in the future.
5 Things You Should Avoid
To ensure a successful programming experience, avoid these common mistakes:
- Using an Incompatible Fob: Always double-check that the fob’s part number is compatible with your Subaru’s year and model. An incorrect fob will not program.
- Rushing the Steps: The timing sequences are precise. Performing steps too quickly or too slowly can cause the process to fail. Read through the instructions first.
- Forgetting to Program All Fobs: When you enter programming mode, the system’s memory is wiped. You must program all fobs in one session, including existing ones.
- Having a Dead Fob Battery: A weak or dead battery in the new key fob is a common reason for failure. Always test or replace the battery before you start.
- Ignoring the Chimes: The chimes are your guide. If you don’t hear a chime when you should, something is wrong. Stop and restart the process from the beginning.
Frequently Asked Questions
- Can I Program a Key Fob From a Different Subaru Model to My Car?
No, you must use a key fob that is specifically designed for your vehicle’s model and year. Fobs operate on different frequencies and have unique encryption codes. Using an incompatible fob will result in programming failure, so always verify the part number before purchasing a replacement. - What Should I Do if the Programming Doesn’t Work After Several Tries?
If you’ve followed all the steps correctly and it still fails, check the new fob’s battery first. If the battery is good, there may be an issue with the fob itself or your car’s receiver. At this point, consulting your local dealership or a qualified automotive locksmith is the best next step. - Will This Process Also Program the Ignition Key Part of a Key Fob?
No, this procedure only programs the remote transmitter for locking/unlocking the doors. Programming the transponder chip inside the key, which allows the engine to start, is a separate process. That task requires specialized diagnostic equipment and typically must be done by a dealer or locksmith.
Conclusion
Programming your own Subaru key fob is a straightforward and rewarding task that puts you in charge of your vehicle’s accessibility.
By carefully following the 10 steps outlined in this guide, you can successfully sync a new remote to your car, saving both time and money. Remember to gather the necessary items, pay close attention to the timing of each step, and avoid common pitfalls.
Hopefully, the guide on how to program a subaru key fob has been helpful and informative.