Inspect The Specified Position

If the stop light switch does not operate properly (or if it is not secured at the specified position), replace with a new part.
Specified position L:

2 mm (0.079 in)

Fig 1: Identifying Stop Light Switch Specified Position
Courtesy of SUBARU OF AMERICA, INC.
Measure the clearance between the threaded end of stop light switch and the stopper.
CAUTION: Be careful not to rotate the stop light switch.

Stop light switch clearance A:

0.3 mm (0.012 in)

Fig 2: Identifying Stop Light Switch Clearance
Courtesy of SUBARU OF AMERICA, INC.
If it is not within the specification, adjust the position of the stop light switch.

CAUTION: Be careful not to rotate the stop light switch.