NOTE: When the select lever is shifted while idling, there will be a certain time elapse or lag before shock is felt.

Connect the Subaru Select Monitor.
Turn the ignition switch to ON. (Engine OFF)
Display [ATF Temp.].
Warm up until [ATF Temp.] reaches to 60 - 80°C (140 - 176°F).
Apply the parking brake.
Turn off all systems causing an electrical load, such as headlights, A/C, seat heater and rear defogger.
Shift the select lever from "N range" to "D range", and measure the time elapsed from shifting the lever until the shock is felt.
NOTE:
- Make three measurements and take the average value.
- Be sure to allow one minute or more interval between tests.
Specification:

1.5 seconds or less

If time lag is longer than specified:
- Secondary pressure (line pressure) is too low.
- Forward clutch worn
- Forward clutch piston malfunction
- Control valve body malfunction
- Learning is incomplete
Shift the select lever from "N range" to "R range", and measure the time elapsed from shifting the lever until the shock is felt.
Specification:

1.5 seconds or less

If time lag is longer than specified:
- Secondary pressure (line pressure) is too low.
- Reverse brake worn
- Reverse brake piston malfunction
- Control valve body malfunction
- Learning is incomplete

When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

• You smell fuel, burning insulation, or see smoke.

• Brakes feel soft, pull hard to one side, or make grinding noises.

• The engine overheats, stalls repeatedly, or misfires under load.

• You are missing required tools, torque specs, or safe lifting equipment.

• You are not confident in the next step or safety outcome.

Safety Warning

Time Lag Test: Inspection