Subaru 2003 Impreza Owner's Manual page 241

Starting and operating
4. Insert the screwdriver into the hole.
7-20
5. Push down on the screwdriver and move the se-
lector lever from the "P" to the "N" position.
6. Remove the screwdriver from the hole. Depress
the brake pedal and start the engine.
Take your vehicle to the nearest SUBARU dealer im-
mediately to have the system repaired.