2020 Subaru Legacy Smart Key Remote Fob Programming Instructions

Important Notice: The 2020 Subaru Legacy does not support onboard programming for its smart key remote fob. Programming must be completed by a trained automotive technician using specialized diagnostic equipment.

Programming Procedure:

• Step 1: Schedule service with a certified technician or authorized provider who is equipped with the proper tools and experience to program smart key systems.
• Step 2: If your vehicle is drivable, consider taking it directly to the service location. This may help reduce overall service costs compared to requesting mobile support.
• Step 3: The technician will connect a diagnostic interface to your vehicle's electronic system to register the new smart key fob.
• Step 4: After programming, all smart key functions—such as remote locking, unlocking, and push-button start—will be tested to ensure everything is functioning properly.

Additional Notes:

• If no existing keys are functional, you may need to provide proof of ownership, such as the vehicle title or registration. Some systems may require all remotes to be present during the session to retain their functionality. Ensure the technician has experience with Subaru smart key systems to prevent compatibility issues or errors during setup.