Model With Keyless Access With Push Button Start
WARNING: This page is about a different car, the 2022 Subaru WRX. However, it is still accessible from the selected car via links, so may be relevant.
Immobilizer antenna is integrated with the push button ignition switch.
For the operation procedures of the immobilizer antenna, refer to "Push Button Ignition Switch". Ref. to SECURITY AND LOCKS>PUSH BUTTON IGNITION SWITCH>INSTALLATION