Impreza WRX STI F4-2.5L Turbo (2008)
3) Pull up the brake pedal and make sure that play is 0.5 2 mm (0.020 - 0.079 inch).
4) Connect the stop light switch connector.
5) Check that the brake light operate properly.
NOTE: It is not necessary to check or adjust the clearance to the stop light switch because it is automatically adjusted at installation.
INSPECTION
1) Measure the resistance between stop light switch terminals.
2) If the stop light switch does not operate properly, replace with a new part.