ATTENTION:
GENERAL MANAGER

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PARTS MANAGER

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CLAIMS PERSONNEL

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IMPORTANT - All
Service Personnel
Should Read and
Initial in the boxes
provided, right.

SERVICE MANAGER

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© 2022 Subaru of America, Inc. All rights reserved.

SERVICE BULLETIN
APPLICABILITY: 2019-22MY Ascent

2020-22MY Legacy & Outback 2.4L Turbo

NUMBER: 16-136-22R
DATE:

01/20/22

SUBJECT:

REVISED:

03/09/22

Vibration & Possible Judder Concern on Turns
Under Acceleration

INTRODUCTION:
This service bulletin provides a temporary repair procedure to address vibrations and/or judder
concerns experienced on turns during acceleration. If either of these conditions are verified, follow
the confirmation process outlined below. If confirmed and until further notice, the multiple plate
transfer (MPT) clutch will require replacement. A revised repair procedure will be introduced at a
later date.

PART INFORMATION:

CAUTION: VEHICLE SERVICING PERFORMED BY UNTRAINED PERSONS COULD
RESULT IN SERIOUS INJURY TO THOSE PERSONS OR TO OTHERS.
Subaru Service Bulletins are intended for use by professional technicians ONLY. They
are written to inform those technicians of conditions that may occur in some vehicles,
or to provide information that could assist in the proper servicing of the vehicle. Properly
trained technicians have the equipment, tools, safety instructions, and know-how to
do the job correctly and safely. If a condition is described, DO NOT assume that this
Service Bulletin applies to your vehicle, or that your vehicle will have that condition.

Subaru of America, Inc. is
ISO 14001 Compliant
ISO 14001 is the international standard for
excellence in Environmental Management
Systems. Please recycle or dispose of
automotive products in a manner that is friendly
to our environment and in accordance with all
local, state and federal laws and regulations.

Continued...
Bulletin Number: 16-136-22R; Revised: 03/09/22

Page 1 of 5

IMPORTANT NOTES:
•

Part quantities indicated with a (*) in the information below MUST be ordered with the
correct thickness. Refer to the Service Manual for details on thickness confirmation.

•

Always order the most up-to-date replacement parts based on the specific VIN being repaired.
LEGACY & OUTBACK
Part Description

Part Number

PLATE SET-TRANSFER CLUTCH

31523AA460
31523AA470
31523AA480

PLATE-PRESSURE

ASCENT
Qty

Part Description

Part Number

Qty

1*

PLATE SET-TRANSFER CLUTCH

31523AA450
31523AA460
31523AA470
31523AA480

1*

31593AA151
31593AA161

1*

PLATE-PRESSURE

31593AA151
31593AA161

1*

SHAFT ASSY-REDUCTION DRIVE
GEAR

31441AA301

1

SHAFT ASSY-REDUCTION DRIVE
GEAR

31441AA301

1

GEAR-TRANSFER DRIVE

33113AA510

1

GEAR-TRANSFER DRIVE

33113AA490

1

PISTON-CLUTCH TRANSFER

33143AA080

1

PISTON-CLUTCH TRANSFER

33143AA080

1

SPRING-CLUTCH PISTON RETURN

31592AA060

1

SPRING-CLUTCH PISTON RETURN

31592AA060

1

SEAL-TRANSFER PISTON

33283AA010

1

SEAL-TRANSFER PISTON

33283AA010

1

SNAP RING-OUTER

805047030

1

SNAP RING-OUTER

805047030

1

SNAP RING-INNER

805100030

1

SNAP RING-INNER

805100030

1

SEAL-TRANSFER PISTON

33283AA010

1

SEAL-TRANSFER PISTON

33283AA010

1

SNAP RING-OUTER

805051030

1

SNAP RING-OUTER

805051030

1

SNAP RING

805195010

2

SNAP RING

805195010

2

BALL BEARING

806235230

1

BALL BEARING

806235230

1

RING-SEAL

31377AA490

3

RING-SEAL

31377AA490

3

THRUST BEARING

806536020
806535030
806535040
806535050
806535060
806535070
806535090

1*

THRUST BEARING

806536020
806535030
806535040
806535050
806535060
806535070
806535090

1*

GASKET

803916010

1

GASKET

803916010

1

GASKET

803918060

1

GASKET

803918060

1

High Torque CVT-LV (As Needed)

Model

Transmission Fluid

ALL

High Torque CVTF-LV

High Torque CVT-LV (As Needed)

Part Number

Quantity/Unit/Pack

SOA748V0300

5 Gallon Pail

SOA748V0310

16-Gallon Keg

Warranty Part #
SOA635312

Continued...
Bulletin Number: 16-136-22R; Revised: 03/09/22

Page 2 of 5

SERVICE PROCEDURE / INFORMATION:
Procedure Overview Flowchart:

Continued...
Bulletin Number: 16-136-22R; Revised: 03/09/22

Page 3 of 5

Detailed Diagnosis Procedure:
STEP 1: Using Subaru Select Monitor (SSM), observe the selected data items listed in the table
below. Road test and confirm if the symptom can be duplicated under the suggested conditions as
listed.
CAUTION: It is highly recommended for TWO people to perform this procedure; one to observe
SSM data while the other drives the vehicle.
Selected Data Items

Conditions

CVT oil pan temperature

Bellow 176 Deg F

Acceleration opening angle

10% to 30%

Steering angle

FULL Steer

Vehicle speed

Under 20mph

IMPORTANT NOTE: Always save the recorded data in Subaru Select Monitor.
STEP 2: Can the symptom be duplicated under the conditions described above?
YES – Proceed to STEP 3.
NO – Verify the customer’s exact complaint and continue diagnosis.
STEP 3: Using the SSM, select “Work Support” within the “Transmission” menu. Select “AWD
ON/OFF Switching Mode” and switch to front wheel drive mode. Road test again in this mode and
attempt to duplicate the described symptom.
STEP 4: Can the symptom be duplicated while operating in front wheel drive mode?
YES – Continue diagnosis and repair the cause.
NO – Proceed to STEP 5
STEP 5: Replace ALL of the applicable parts outlined in the Part Information section of this bulletin.
The service procedures for transfer clutch disassembly, assembly, and adjustment remain unchanged.
Always refer to the applicable Service Manual and review the full requirements of the repair being
performed. The Service Manual procedures contain information critical to performing an effective
repair the first time, every time. This includes but is not limited to important SAFETY precautions,
proper inspection criteria, necessary special tools, required processes and related one-time-use parts
needed for a complete and lasting repair.
Refer to STIS: Transmission/Transaxle > Transfer Clutch > REMOVAL, INSPECTION,
DISASSEMBLY, ASSEMBLY, & ADJUSTMENT.
Continued...
Bulletin Number: 16-136-22R; Revised: 03/09/22

Page 4 of 5

IMPORTANT NOTES:
•

The Service Manual uses a black star () in the component breakdown illustration to
indicate one-time use parts

•

Refer to the applicable Service Manual and review: General Description > Repair Contents
> Action required before & after Battery Disconnect. Additionally, record any stored seat
position(s) before proceeding. Relearn any seat position memory after work is complete. If
the power rear gate (PRG) height has been customized, that position must also be noted and
relearned.

•

Whenever reconnecting the ground cable terminal to the battery sensor, torque to 7.5Nm
(5.5ft.-lbs. or 66inch-lbs.) while supporting the sensor with the other hand as outlined in the
applicable Service Manual under: STARTING/CHARGING SYSTSEMS > Battery Sensor.

WARRANTY / CLAIM INFORMATION:
For vehicles within the Basic New Car Limited or Powertrain Limited Warranty period or covered by
an active Subaru Added Security Powertrain, Classic or Gold plan, this repair may be submitted using
the following claim information:
Labor Description

Labor
Operation #

Labor
Time

CVT AWD EXTENSION HOUSING/SEALER R&R

B303-431

4.6

CVT TRANSFER CLUTCH ASSEMBLY OVERHAUL

C303-446

0.5

Fail Code

MSP-26

IMPORTANT REMINDERS:
•

SOA strongly discourages the printing and/or local storage of service information as
previously released information and electronic publications may be updated at any time.

•

Always check for any open recalls or campaigns anytime a vehicle is in for servicing.

•

Always refer to STIS for the latest service information before performing any repairs.

Bulletin Number: 16-136-22R; Revised: 03/09/22

Page 5 of 5