Subaru Impreza 2017 Owner's Manual page 374

9-32
In case of emergency/If your vehicle is involved in an accident
Models without "keyless access with
push-button start system":
1. Turn the ignition switch to the LOCK
or ACC position.
2. Restart the engine.
Models with "keyless access with
push-button start system":
1. Turn the push-button ignition switch to
the ACC or OFF position.
2. Restart the engine.