Subaru Legacy BN/BS (2015-2019) Owners Manual: To arm the system using power door locking switch

Subaru Legacy BN/BS (2015-2019) Owners Manual / Keys and doors / Alarm system / Arming the system / To arm the system using power door locking switch

Close all windows and the moonroof (if equipped).
Remove the key from the ignition switch (models without keyless access function)/make sure the push-button ignition switch is turned off (models with keyless access function).
Open the doors and get out of the vehicle.
Make sure that the engine hood (and the trunk lid (Legacy)) are locked.
Close the doors (and the rear gate (Outback)) but leave only the driver's door or the front passenger's door open.

To arm the system using power door locking switch

Press the front side ("LOCK" side) of the power door locking switch to set the door locks.
Close the door. An electronic chirp will sound once, the hazard warning flashers will flash once and the security indicator light will start flashing rapidly. After rapid flashing for 30 seconds (standby time), the security indicator light will then flash slowly (twice approximately every 2 seconds), indicating that the system has been armed for surveillance.

To arm the system using the access key/remote transmitter

Close all windows and the moonroof (if equipped). Remove the key from the ignition switch (models without "keyless access with push-button start system")/turn the push-button igniti ...

To arm the system using the keyless access function (if equipped)

Close all windows and the moonroof (if equipped) Turn the push-button ignition switch to the "OFF" position. Open the doors and get out of the vehicle. Make sure that ...

Other materials:

Procedure
CAUTION:• Do not turn the power of the Subaru Select Monitor OFF during work, and do not disconnect the data link connector.• On completing the work in FWD, switch back in AWD.1. Shift the select lever to “P” range.2. Connect the Subaru Select Monitor to data link connector.3 ...