It couldn't be easier to disable auto start/stop on your Subaru Crosstrek. This intelligent device restores your preference for auto start-stop automatically which eliminates the need to press the button after each ignition cycle.
Check out this installation and demonstration of the AE022 model for vehicles with RAB. This video is of a Forester, but the process is identical.
(Scroll down for AE026 installation instructions.)
The AE022 device for vehicles with RAB simply plugs into the module under the driver's seat. Watch the Forester video below to see the installation process
The AE026 device installs overhead very similar to the Subaru Outback. You may notice slight differences in the screw location, but the general process is the same. Watch the video below to see the installation process