Subaru Legacy BN/BS (2015-2019) Owners Manual: Activating and deactivating the alarm system

Subaru Legacy BN/BS (2015-2019) Owners Manual / Keys and doors / Alarm system / Activating and deactivating the alarm system

To change the setting of your vehicle's alarm system for activation or deactivation, do the following.

Disarm the alarm system. Refer to "Disarming the system" .
Sit in the driver's seat and shut all doors (and the rear gate (Outback)).
Turn the ignition switch to the "ON" position.
Hold down the REAR (UNLOCK) side of the driver's power door locking switch, open the driver's door within the following 1 second, and wait 10 seconds without releasing the switch. The setting will then be changed as follows:

If the system was previously activated: The odometer screen displays "ALOF" and the horn sounds twice, indicating that the system is now deactivated.

If the system was previously deactivated: The odometer screen displays "ALON" and the horn sounds once, indicating that the system is now activated.

NOTE You may have the above setting change done by your SUBARU dealer

System alarm operation

The alarm system will give the following alarms when triggered. The vehicle's horn will sound for 30 seconds. The hazard warning flashers will flash for 30 seconds. If any of ...

If you have accidentally triggered the alarm system

To stop the alarm Perform any of the following operations. Press any button on the access key/ remote transmitter. Turn the ignition switch to the "ON" position (models without ...

Other materials:

Replacing battery of transmitter
Open the key head using a flat-head screwdriver. Remove the transmitter case from the key head. Open the transmitter case by releasing the hooks. 1) Negative (−) side facing up Replace the old battery with a new battery (Type CR1620 or equivalent) ...