DTC B27A8 Trunk/Rear Gate External Antenna Open: Trouble Symptom
WARNING: This page is about a different car, the 2016 Subaru Outback and 2016 Subaru Legacy. However, it is still accessible from the selected car via links, so may be relevant.
Keyless access system does not function.
(Unable to unlock with the rear gate opener button, or unable to lock with the rear lock button, unable to open the trunk with the trunk opener button)
CAUTION:
For replacement procedure of keyless access control module, refer to the "REGISTRATION MANUAL FOR IMMOBILIZER" provided as a separate volume.