See also:

Turbo models
Except STI The engine is designed to operate using premium unleaded gasoline with an octane rating of 91 AKI (95 RON) or higher. If premium unleaded gasoline is not available, regular unleaded gasoli ...

ON
This is the normal operating position after the engine is started. ...

Other bulbs
It may be difficult to replace the bulbs. Have the bulbs replaced by your SUBARU dealer if necessary. ...