2023 Subaru Ascent BaseFACTORY OEM SERVICE PROCEDURE

Transmission Assembly: Removal

  1. Release the parking brake.
  2. Disconnect the ground terminal from battery sensor. Ref. to REPAIR CONTENTS>NOTE>BATTERY .
  3. Release the shift lock and shift the select lever to the "N range". Ref. to CONTROL SYSTEMS>SELECT LEVER>REMOVAL .
  4. Remove the air intake duct. Ref. to INTAKE (INDUCTION) (H4DOTC)>AIR INTAKE DUCT>REMOVAL .
  5. Remove the intercooler. Ref. to INTAKE (INDUCTION) (H4DOTC)>INTERCOOLER>REMOVAL .
  6. Disconnect the engine wiring harness connector (A), engine wiring harness connector (B), clamp (C) and clamp (D).
    G16389386Courtesy of SUBARU OF AMERICA, INC.
  7. Disconnect the primary speed sensor harness connector.
    G09481936Courtesy of SUBARU OF AMERICA, INC.
  8. Remove the engine rear hanger.
    G16389387Courtesy of SUBARU OF AMERICA, INC.
  9. Remove the pitching stopper and pitching stopper bracket. Ref. to CONTINUOUSLY VARIABLE TRANSMISSION (TR690)>TRANSMISSION MOUNTING SYSTEM>REMOVAL>PITCHING STOPPER .
  10. Disconnect the CVTF cooler (with warmer feature), and move it aside so that it does not interfere with the operation.
    G13199990Courtesy of SUBARU OF AMERICA, INC.
  11. Remove the starter. Ref. to STARTING/CHARGING SYSTEMS (H4DOTC)>STARTER>REMOVAL .
  12. Separate the torque converter from drive plate.
    1. Remove the plug from the service hole.
      G13198685Courtesy of SUBARU OF AMERICA, INC.
    2. Insert the wrench into the crank pulley bolt, and rotate the crank pulley to remove the bolts (4 places) securing the torque converter to the drive plate.
      G13198686Courtesy of SUBARU OF AMERICA, INC.
    3. Make sure the torque converter moves freely by rotating with finger through the starter installation hole.
    4. Attach the ST to the converter case.

      Preparation tool: 

      ST: STOPPER SET (498277200)

      G13198687Courtesy of SUBARU OF AMERICA, INC.
  13. Disconnect the engine ground.
    G09481940Courtesy of SUBARU OF AMERICA, INC.
  14. Remove the bolts which hold the upper side of the transmission.
    G14610594Courtesy of SUBARU OF AMERICA, INC.
  15. Set the ST.

    Preparation tool: 

    ST: ENGINE SUPPORT ASSY (41099AC000)

    NOTE: Place a washer with 2 mm (0.08 in) thickness into the gap between the cylinder block and ST.
    G13199991Courtesy of SUBARU OF AMERICA, INC.
  16. Drain the CVTF. Ref. to CONTINUOUSLY VARIABLE TRANSMISSION (TR690)>CVTF>REPLACEMENT .
  17. Drain differential gear oil. Ref. to CONTINUOUSLY VARIABLE TRANSMISSION (TR690)>DIFFERENTIAL GEAR OIL>REPLACEMENT .
  18. Remove the front drive shaft. Ref. to PROPELLER SHAFT/DRIVE SHAFT/AXLE>FRONT DRIVE SHAFT>REMOVAL .
  19. Remove the propeller shaft. Ref. to PROPELLER SHAFT/DRIVE SHAFT/AXLE>PROPELLER SHAFT>REMOVAL .
  20. Remove the hanger bracket. Ref. to CONTINUOUSLY VARIABLE TRANSMISSION (TR690)>TRANSMISSION MOUNTING SYSTEM>REMOVAL>HANGER BRACKET .
  21. Disconnect the select cable from the transmission main body.
    CAUTION: Do not apply excessive load while holding the part (a).
    G14602401Courtesy of SUBARU OF AMERICA, INC.
    G14602402Courtesy of SUBARU OF AMERICA, INC.
  22. Disconnect the oil cooler pipe. (Model with CVTF cooler (air cool))
    G13199217Courtesy of SUBARU OF AMERICA, INC.
  23. Remove the bolts and nuts which hold the lower side of transmission.
    G13621900Courtesy of SUBARU OF AMERICA, INC.
  24. Set the transmission jack under the transmission.
    CAUTION: Make sure that the support plates of transmission jack do not touch the oil pan.
  25. Remove the transmission rear crossmember. Ref. to CONTINUOUSLY VARIABLE TRANSMISSION (TR690)>TRANSMISSION MOUNTING SYSTEM>REMOVAL>TRANSMISSION REAR CROSSMEMBER AND REAR CUSHION RUBBER .
  26. Remove the bolt securing the transmission case cover (rear).
    G13200000Courtesy of SUBARU OF AMERICA, INC.
  27. Lower the transmission jack by 75 mm (2.95 in).
  28. Disconnect the CVTF cooler inlet pipe and CVTF cooler outlet pipe, and put them aside so that they do not interfere with work.
    G13200001Courtesy of SUBARU OF AMERICA, INC.
  29. While lowering the transmission jack gradually, retract the ST (ENGINE SUPPORT ASSY), and then tilt the engine rearward.
  30. Remove the transmission body.
    NOTE: Adjust the position and angle of the transmission jack so that the engine and the transmission are aligned straight.
  31. Remove the rear cushion rubber. Ref. to CONTINUOUSLY VARIABLE TRANSMISSION (TR690)>TRANSMISSION MOUNTING SYSTEM>REMOVAL>TRANSMISSION REAR CROSSMEMBER AND REAR CUSHION RUBBER .
  32. Remove the transmission case cover (rear).
    G13621903Courtesy of SUBARU OF AMERICA, INC.
  33. Remove the transmission case cover (front).
    G14611053Courtesy of SUBARU OF AMERICA, INC.
  34. Remove the CVTF cooler inlet pipe and CVTF cooler outlet pipe.
    NOTE: Perform this procedure only when required.
    1. Remove the CVTF cooler outlet pipe.
      G13200091Courtesy of SUBARU OF AMERICA, INC.
    2. Remove the CVTF cooler inlet pipe. (Model without CVTF cooler (air cool))
      G13200090Courtesy of SUBARU OF AMERICA, INC.
    3. Remove the CVTF cooler inlet hose and CVTF cooler outlet hose. (Model without CVTF cooler (air cool))
      G13621908Courtesy of SUBARU OF AMERICA, INC.
    4. Remove the CVTF CVT inlet hose. (Model with CVTF cooler (air cool))
      G13621905Courtesy of SUBARU OF AMERICA, INC.
    5. Remove the CVTF cooler outlet hose. (Model with CVTF cooler (air cool))
    G13621907Courtesy of SUBARU OF AMERICA, INC.
  35. When overhauling the transmission body, refer to "Preparation for overhaul". Ref. to CONTINUOUSLY VARIABLE TRANSMISSION (TR690)>PREPARATION FOR OVERHAUL .
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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.