See also:

LOCK
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 ...

Behavior with key lock-in prevention function non-operational
● If the lock lever is turned to the rear (“LOCK”) position with the driver’s door open and the driver’s door is then closed with the lock lever in that position, the driver’s door is locked ...

Brake booster
If the brake booster does not operate as described in the following, have it checked by your SUBARU dealer. 1. With the engine off, depress the brake pedal several times, applying the same pe ...