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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© 2021 Subaru of America, Inc. All rights reserved.

SERVICE BULLETIN
APPLICABILITY:

2019-21MY Forester

NUMBER: 10-103-21

SUBJECT:

Evaporator Core Drain / Water Sloshing Sound
When Turning

DATE:

11/15/21

INTRODUCTION:
This bulletin announces a design change made to the evaporator core insulation. A customer may
experience a “water sloshing-type” sound when turning the vehicle with the blower motor and A/C
system operating. The new insulation has additional drainage to improve water flow. If the sound is
duplicated, replace the insulation with the new part.
PRODUCTION CHANGE INFORMATION:
The production change information is TBD.
PART INFORMATION:
REMINDER: Always order the most up-to-date replacement parts based on the specific VIN being
repaired.
Part Description

Part Number

PACKING-EVAPORATOR CORE

72133FL061

SEAL O RING

73039AA080

SEAL O RING

73039AA100

OLD
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.

NEW
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: 10-103-21; Date: 11/15/21

Page 1 of 5

SERVICE PROCEDURE / INFORMATION:
REMINDER: Customer satisfaction and retention starts with performing quality repairs.
STEP 1)

The work procedure for removing and installing the evaporator has not changed.
Refer to the applicable Subaru Service Manual: Heater & Air Conditioner/Ventilator >
AIR CONDITIONER > Evaporator.

NOTES:
•

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. Always relearn any seat position memory after work is
complete. If the power rear gate (PRG) height has been customized, the position must also
be noted and relearned.

•

As with any repair to the A/C system, confirm proper A/C performance as per the applicable
Service Manual before and after any repair is made.

STEP 2)

Submerge the insulated portions of the
evaporator into a suitable container of
water. A five gallon bucket or storage
bin can be used. Make sure the
evaporator insulation is fully submerged
for 5 minutes. This will allow the
adhesive to soften. DO NOT let any
water enter the evaporator.

STEP 3)

Remove the evaporator from the water
after 5 minutes.

STEP 4)

CAREFULLY remove the evaporator
core insulation. Any remaining residue
from the original adhesive is acceptable
once it is completely dry.

IMPORTANT NOTE: The connector insulation is
overlapped by the evaporator core insulation. Use
CAUTION when working in this area so the
connection insulation is not damaged.

Connector Insulation

Continued...
Bulletin Number: 10-103-21; Date: 11/15/21

Page 2 of 5

STEP 5)

Install the new evaporator core insulation onto the evaporator.

72133FL061

•

Start from the connector insulation side of the evaporator top surface. Make sure the
insulation is center aligned with the evaporator.

Starting Point

•

Center Alignment

Continue wrapping the insulation around the side surface of the evaporator while maintaining
a center aligned installation.

Continued...
Bulletin Number: 10-103-21; Date: 11/15/21

Page 3 of 5

•

Continue wrapping the insulation to the bottom surface of the evaporator. Align the surface
edge of the evaporator with the edge of the insulation. The grooved edge portions of the
insulation should line up with the 5th row of fins on the evaporator at both ends.

Left

•

Right

Continue wrapping the insulation to the pipe side surface of the evaporator. Be sure to align
the insulation centered onto the evaporator. Tuck the end portion of the insulation under the
connector insulation as shown below.

IMPORTANT NOTE: Make sure the lead wire is routed toward the end between the connector
insulation and the evaporator insulation.

Continued...
Bulletin Number: 10-103-21; Date: 11/15/21

Page 4 of 5

STEP 6)

Reinstall the evaporator. Refer to the applicable Subaru Service Manual: Heater & Air
Conditioner/Ventilator > AIR CONDITIONER > Evaporator.

IMPORTANT NOTE: 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 SYSTEMS > Battery
Sensor.

WARRANTY / CLAIM INFORMATION:
For vehicles within the Basic New Car Limited Warranty period, this repair may be submitted using
the following claim information:
Labor Description

Labor
Operation #

Labor
Time

EVAPORATOR CORE PACKING R&R

B014-512

5.0

EVACUATE & RECHARGE A/C SYSTEM

C010-101

1.5

Fail Code
YLG48

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: 10-103-21; Date: 11/15/21

Page 5 of 5