The key can only be inserted or removed in this position. The ignition switch will lock the steering wheel when you remove the key.
If turning the key is difficult, turn the steering wheel slightly to the right and left as you turn the key.

The key can be turned from the "ACC" to "LOCK" position only when the select lever is in the "P" position (CVT models) and the key is pushed in while turning it (all models).
ACC
In this position the electrical accessories (audio, accessory power outlet, etc.) can be used.
ON
This is the normal operating position after the engine is started.
START
The engine is started in this position. The starter cranks the engine to start it. When the key is released (after the engine has started), the key automatically returns to the "ON" position.
CAUTION
Do not turn the ignition switch to the "START" position while the engine is running.
If your registered key fails to start the engine, pull out the key once (the security indicator light will blink), and then insert the key into the ignition switch and turn it to the "START" position and again try to start the engine.
NOTE
The engine may not start in the following cases:


Ignition switch (models without "keyless access with push-button start
system")
Key reminder chimeDtc p0134 a/f / o2 sensor circuit no activity detected bank 1 sensor 1
ENGINE (DIAGNOSTICS)(H4DO) > Diagnostic Procedure with Diagnostic Trouble Code (DTC)DTC P0134 A/F / O2 SENSOR CIRCUIT NO ACTIVITY DETECTED BANK 1 SENSOR 1DTC detecting condition:Immediately at fault recognitionCAUTION:After servicing or replacing faulty parts, perform Clear Memory Mode Clear Mem ...
Preparation tool
LAN SYSTEM (DIAGNOSTICS) > General DescriptionPREPARATION TOOL1. SPECIAL TOOLILLUSTRATIONTOOL NUMBERDESCRIPTIONREMARKS — SUBARU SELECT MONITOR 4Used for setting of each function and troubleshooting for electrical system.NOTE:For detailed operation procedures of Subaru Select Monitor 4, refer to ...
Preparation
1. Turn off the ignition switch.
2. Close all doors (including rear gate).
3. Press and hold the " "
button on the
access key. All doors (including rear gate)
will then be locked.
4. Keep the " " button
pressed, and
press the rear lock button within 5
seconds after step ...