Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
2021 Subaru Ascent BaseFACTORY OEM SERVICE PROCEDURE
Control Valve Body: Installation
- Install new O-rings to the pressure pipe No. 1, pressure pipe No. 2 and pressure pipe No. 3.NOTE: Apply CVTF to the O-rings.
- Install the pressure pipe No. 1, pressure pipe No. 2 and pressure pipe No. 3 to the transmission case.
- Install the control valve body.NOTE:
- Engage the manual valve to the manual plate.
- Lead the transmission harness through from the point indicated by dashed line (a) in the figure in order to prevent it from being caught.
Tightening torque:
9 N.m (0.9 kgf-m, 6.6 ft-lb)
- Connect the connector.
- Install the oil pan and oil strainer. Ref. to CONTINUOUSLY VARIABLE TRANSMISSION (TR690)>Oil Pan>INSTALLATION .
- Connect the ground terminal to battery sensor. Ref. to REPAIR CONTENTS>NOTE>BATTERY .
- Refill CVTF to adjust the CVTF amount. Ref. to CONTINUOUSLY VARIABLE TRANSMISSION (TR690)>CVTF>INSPECTION .
- Perform "Clear AT learning value" and "AT learning mode" using the Subaru Select Monitor. Ref. to CONTINUOUSLY VARIABLE TRANSMISSION (TR690)>AT LEARNING .
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.