2008 Subaru Outback Base, AutomaticFACTORY OEM SERVICE PROCEDURE

Lock-Up Function

  • When the accelerator is lightly depressed while driving on a flat road in "D" range, check that rpm does not change abruptly.
  • Check slip lock-up with following procedure. Subaru Select Monitor is required for judgment. Before starting the check, make sure that no DTC is displayed using the Subaru Select Monitor. If there is a DTC, perform the corrective action according to the DTC. Recheck to see that the DTC has been cleared, then start the slip lock-up check.
  1. The check is to be performed on a flat and straight road or on a free roller.
    NOTE:
    • Slip lock-up will not operate when the vehicle is lifted up off of its wheels, since there is no surface resistance.
    • When checking on the free roller, the driving resistance will be slightly inadequate. It will be easier to judge if the foot brake is lightly applied while performing the check.
  2. Connect the Subaru Select Monitor.
  3. Check the ATF temperature using the Subaru Select Monitor.
    NOTE:
    • Make sure that the ATF temperature is between 50 - 100°C (122 - 212°F).
    • If the temperature is low, warm-up the ATF by running the vehicle.
  4. Start the engine, and set so that the lock-up duty can be read on the data display of the Subaru Select Monitor.
  5. Drive the vehicle at a constant speed of 35 - 40 km/h (22 - 25 MPH).
  6. Read the lock-up duty while vehicle is running.

    Standard 

    25 - 45% 

    NOTE:
    • The reading may be slightly lower on a free roller.
    • Slip lock-up control is not operating if the lock-up duty is 5% or less, or when the lock-up duty goes down immediately after starting to rise. In these cases, improper ATF or deterioration of the ATF may be the cause. Check the amount of ATF or replace the fluid, then recheck.
Factory Service Tools

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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.

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