Inhibitor Switch: Adjustment

Shift the select lever to "N" range.
Loosen the three inhibitor switch securing bolts.
Insert the ST as vertical as possible into the holes in inhibitor switch lever and switch body.
ST 499267300 STOPPER PIN

Fig 1: Identifying Stopper Pin
Courtesy of SUBARU OF AMERICA, INC.
Tighten the three inhibitor switch bolts.
Tightening torque: 3.5 N.m (0.36 kgf-m, 2.6 ft-lb)
Repeat the above checks. If the inhibitor switch is determined to be "faulty", replace it.