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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© 2023 Subaru of America, Inc. All rights reserved.

SERVICE BULLETIN
APPLICABILITY:

2020-24MY Legacy & Outback
2019-23MY Ascent
2025 Forester

SUBJECT:

Seat Ventilation Blower Unit /
Vibration-Type Sound

NUMBER: 12-252-23R
DATE:

10/19/23

REVISED:

09/30/25

INTRODUCTION:
This bulletin announces the availability of new seat ventilation blower units. The units have been
redesigned with added rigidity and now includes a ball bearing instead of a sleeve-style bearing to
address some cases of a vibration-type sound emitting from the blower unit during seat ventilation
operation. If this sound is duplicated, replace the associated seat ventilation blower unit with the new
part(s).

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: 12-252-23R; Revised: 09/30/25

Page 1 of 3

PRODUCTION CHANGE INFORMATION:
The new seat ventilation blower units were incorporated into vehicle production as per the table
below.
Model

Starting VIN

LEGACY

4S4BWGP67S3025327

OUTBACK

4S4BTGPD3S3269656

ASCENT

4S4WMAUD3S3427865

FORESTER

JF2SLDTC7SH587686

PART INFORMATION:
REMINDER: Always order the most up-to-date replacement parts based on the specific VIN being
repaired.
VIN

Part Description

Part Number

SIA Produced (First 3 VIN Digits: 4S4)

POWER UNIT BLOWER

64102AN01A

Japan Produced (First 3 VIN Digits: JF2)

POWER UNIT BLOWER

64102AN010

SERVICE PROCEDURE / INFORMATION:
REMINDER: Customer satisfaction and retention starts with performing quality repairs.
The service procedures for the seat ventilation blower units 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: Body & Electrical/WIRING SYSTEM > SEATS > Front Seat
WARRANTY / CLAIM INFORMATION:
Always refer to the Labor Time Guide for the most up-to-date labor description, operation, flat rate
time, and fail code information. For vehicles within the Basic New Car Limited Warranty period or
covered by an active Subaru Added Security Classic or Gold plan, this repair may be submitted using
the following claim information:
Labor Description

Labor Operation #

Labor Time

Fail Code

RH SEAT BACK VENTILATION MOTOR R&R

B870-351

0.7

UVG-25

RH SEAT BOTTOM VENTILATIONMOTOR&R

B870-361

0.5

UVI-25

LH SEAT BACK VENTILATION MOTOR R&R

B870-252

0.6

UVH-25

LH SEAT BOTTOM VENTILATION MOTOR R&R

B870-262

0.4

UVJ-25

Continued...
Bulletin Number: 12-252-23R; Revised: 09/30/25

Page 2 of 3

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 refer to the Labor Time Guide for the most up-to-date labor description, operation, flat
rate time, and fail code information.

•

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: 12-252-23R; Revised: 09/30/25

Page 3 of 3