Check 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 Position
Courtesy of SUBARU OF AMERICA, INC.
Measure the clearance between the threaded end of the stop light switch and the stopper.
CAUTION: Be careful not to rotate the stop light switch.

Stop light switch clearance A:

0.8 mm (0.031 in)

Fig 2: Identifying Stop Light Switch, Stopper And Brake Pedal
Courtesy of SUBARU OF AMERICA, INC.
If it is not within the specification, adjust it by adjusting the position of the stop light switch.
CAUTION: Be careful not to rotate the stop light switch.