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Automatic Transmission Fluid: Inspection

CAUTION: The level of ATF varies with fluid temperature. Pay attention to the fluid temperature when checking ATF level.
  1. Raise the ATF temperature by driving a distance of 5 to 10 km (3 to 6 miles). Otherwise, idle the engine to raise ATF temperature to 70 - 80°C (158 - 176°F) on Subaru Select Monitor. < Ref. to READ CURRENT DATA , OPERATION, Subaru Select Monitor . >
  2. Make sure the vehicle is level.
  3. After selecting all positions (P, R, N, D), shift the select lever in "P" range. Idle the engine for 1 - 2 minutes, and measure the ATF level.
    • 4AT model
      Fig 1: Identifying Automatic Transmission Fluid Level (4AT Model)
      G05664909Courtesy of SUBARU OF AMERICA, INC.
    • 5AT model
      Fig 2: Identifying Automatic Transmission Fluid Level (5AT Model)
      G05664910Courtesy of SUBARU OF AMERICA, INC.
  4. Make sure that ATF level is above the center of upper and lower marks at "HOT' side.
  5. If the ATF level is below the center between upper and lower marks, add the recommended ATF until the fluid level is found above the center between upper and lower marks.
    CAUTION:
    • Use care not to exceed the upper limit level.
    • Adding ATF to the upper limit mark on "HOT" side when the ATF temperature is less than 70°C (158°F) will overfilling of ATF, causing a transmission failure.
  6. Check ATF level after raising ATF temperature to 70 - 80°C (158 - 176°F) by running the vehicle or by idling the engine again.
  7. Check the ATF for leaks.

    Check for leaks in the transmission. If there are leaks, it is necessary to repair or replace gasket, oil seals, plugs or other parts.

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