2019 Subaru Ascent BaseFACTORY OEM SERVICE PROCEDURE

CVT Transaxle: General Description: Specification

Torque converter Model 2.4 L DOHC turbo
Type Symmetric, 3-element, single stage, 2-phase torque converter
Stall torque ratio 2.04
Nominal mm (in) 246 (9.69)
Stall speed (at sea level) r/min 2, 000 - 2, 500 (D range)
2, 000 - 2, 500 (R range)
One-way clutch Sprag type one-way clutch
Oil pump Type Internal gear pump
Driving method Chain drive
Number of teeth Pieces Inner rotor 8
Β  Outer rotor 9
Transmission control element Type Forward continuously variable speed change, 1 reverse, planetary gear
Multi-plate clutch 1 set
Multi-plate brake 1 set
Transmission gear ratio Forward 3.227 - 0.467
Rev 3.136
Drive & driven plate pcs. Input clutch 5, 6
Forward clutch 6, 6
Reverse brake 5, 5
Selector position P (Park) Transmission neutral, output shaft locked, engine start enabled
R (Reverse) Rev
N (Neutral) Transmission neutral, engine start enabled
D (Drive) Forward continuously variable speed change
M (Manual mode) (paddle shift +side) 1st β†’ 2nd β†’ 3rd β†’ 4th β†’ 5th β†’ 6th β†’ 7th β†’ 8th
M (Manual mode) (paddle shift-side) 1st β†’ 2nd β†’ 3rd β†’ 4th β†’ 5th β†’ 6th β†’ 7th β†’ 8th
Hydraulic control and lubrication Type Electronic hydraulic control (speed changed by signals of vehicle speed and accelerator opening angle)
Fluid capacity Without CVTF cooler (air cool) L (US qt, Imp qt) 11.34 - 11.84 (12.0 - 12.5, 10.0 - 10.4)
With CVTF cooler (air cool) 11.79 - 12.29 (12.5 - 13.0, 10.4 - 10.8)
Lubrication system Forced feed lubrication
Cooling and harness Cooling system CVTF cooler (with warmer feature) or CVTF cooler (with warmer feature) + CVTF cooler (air cool)
Inhibitor switch harness 30 poles
Transmission harness 20 poles
Transfer Type Multi-plate transfer (MP-T)
Transfer clutch drives & driven plates pcs. 7, 6
Control method Electronic hydraulic control
Gear ratio 1.081
Front differential Gear ratio 4.111
Backlash of the differential bevel gear and differential bevel pinion mm (in) 0.13 - 0.18 (0.005 - 0.007)
Hypoid gear set backlash
Gear oil capacity L (US qt, Imp qt) 1.15 - 1.25 (1.2 - 1.3, 1.0 - 1.1)

CVTF:Β 

Refer to "RECOMMENDED MATERIALS" for CVTF. Ref. to RECOMMENDED MATERIALS>GREASE>CVTF .

CAUTION: Always use specified CVTF. Using other fluid will cause malfunction.

Differential gear oil:Β 

For the differential gear oil, refer to "RECOMMENDED MATERIALS". Ref. to RECOMMENDED MATERIALS>GREASE>DIFFERENTIAL GEAR OIL .

CAUTION: Note that you may experience poor functionality and performance if an equivalent differential gear oil is used.
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:

  • β€’ You smell fuel, burning insulation, or see smoke.
  • β€’ Brakes feel soft, pull hard to one side, or make grinding noises.
  • β€’ The engine overheats, stalls repeatedly, or misfires under load.
  • β€’ You are missing required tools, torque specs, or safe lifting equipment.
  • β€’ You are not confident in the next step or safety outcome.

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