NHTSA ID Number: 11027988
Manufacturer Communication Number: WRF-25
TSB/Document Date: 2026-02-02
Summary
In the interest of customer satisfaction, Subaru of America, Inc. (Subaru) is initiating a service program for certain 2025 model year Solterra vehicles equipped with a rear window defogger which is connected to a power distribution box by a wire harness.
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TSB/Document ID: WRF-25
Replacement Service Bulletin Number:
MFR Communication Date: 2026-01-15
MFR Internal Campaign ID/Software Version:
Communication Type: Service Bulletin/Repair Instructions
NHTSA Components: VISIBILITY/WIPER
MFR Component System:
MFR Component Subsystem:
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ATTENTION:
GENERAL MANAGER
q
PARTS MANAGER
q
CLAIMS PERSONNEL
q
IMPORTANT - All
Service Personnel
Should Read and
Initial in the boxes
provided, right.
SERVICE MANAGER
q
© 2026 Subaru of America, Inc. All rights reserved.
SERVICE PROGRAM BULLETIN
APPLICABILITY:
2025 Solterra
NUMBER:
DATE:
SUBJECT:
WRF-25
01/15/26
Solterra Power Distribution Box Replacement
In the interest of customer satisfaction, Subaru of America, Inc. (Subaru) is initiating a service
program for certain 2025 model year Solterra vehicles equipped with a rear window defogger which
is connected to a power distribution box by a wire harness.
REASON FOR THIS SERVICE PROGRAM
A terminal on the power distribution box supplying power to the rear window defogger may have
been installed at an incorrect orientation. In this condition, there could be a poor connection or no
connection. This could result in the rear window defogger becoming inoperative and reduce visibility
through the rear window if there is moisture/condensation on that window while driving.
AFFECTED VEHICLES
The number of U.S. vehicles included in this service program is 94.
Model Year
Carline
Production date range
2025
Solterra
December 17th, 2024 - December 23, 2024
Not all vehicles in the production date range listed above may be included in this service program.
Coverage for all affected vehicles must be confirmed by using the Vehicle Coverage Inquiry function
on subarunet.com. This information is now available.
DESCRIPTION OF THE REPAIR
Subaru retailers will replace the power distribution box at no cost to the customer.
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: WRF-25; Date: 01/15/26
Page 1 of 11
RETAILER RESPONSIBILITY
Any vehicles listed in any recall or campaign that are in retailer stock must be:
•
Immediately identified
•
Tagged or otherwise marked to prevent their delivery or use prior to repair
•
Repaired in accordance with the repair procedures outlined in the Bulletin
Retailers are to promptly perform the applicable service procedures, to correct all affected vehicles in
their inventory (new, used, demo & SSLP). Additionally, whenever a vehicle subject to this service
program is taken into inventory or in for service, necessary steps should be taken to ensure the repair
has been made before selling or releasing the vehicle.
OWNER NOTIFICATION
Subaru will notify affected vehicle owners by first class mail on January 22, 2026.
PART INFORMATION:
Part Description
Part Number
Qty
BLOCK ASSY, JUNCTION
0400528242
1
BLOCK ASSY DRIVER SIDE
(POWER DISTRIBUTION BOX ASSEMBLY)
1
BRACKET, JUNCTION BL
(JUNCTION BLOCK BRACKET NO.1)
1
BRACKET, JUNCTION BL
(JUNCTION BLOCK BRACKET NO.2)
1
Image
Continued...
Bulletin Number: WRF-25; Date: 01/15/26
Page 2 of 11
SERVICE PROCEDURE FLOW CHART:
Continued...
Bulletin Number: WRF-25; Date: 01/15/26
Page 3 of 11
REQUIRED TOOLS & MATERIALS:
Description
Image
Details
General hand tools
For part removal and installation
Required for torquing hardware
GTS+
Required for checking DTCs
Laptop
DST-i or DST-010
Required for checking DTCs
Required for part protection
COMPONENT CONFIGURATION:
Continued...
Bulletin Number: WRF-25; Date: 01/15/26
Page 4 of 11
SERVICE PROCEDURE / INFORMATION:
Step 1: Using GTS+, connect to the vehicle and perform a health check. Ensure that no Diagnostic
Trouble Codes (DTCs) are present. If any DTCs are detected, perform the necessary repairs according
to the applicable Service Manual.
Step 2: Remove the Main Body ECU as per the applicable Service Manual
Power Source / Network > POWER DISTRIBUTION > MAIN BODY ECU > REMOVAL
Caution:
To record the various settings of the navigation system, wait at least 3 minutes after turning the IG
OFF before disconnecting the negative battery terminal.
•
Check in advance whether the security lock setting is enabled.
•
Depending on multi-display settings, the program may continue on operating in the background
even if you turn IG OFF, so be sure to check the “ACC customize” settings beforehand.
•
Service Manual reference>Audio / Visual / Telematics > AUDIO / VIDEO > NAVIGATION /
MULTI INFO DISPLAY > NAVIGATION SYSTEM > PRECAUTION
Continued...
Bulletin Number: WRF-25; Date: 01/15/26
Page 5 of 11
Hint: When removing the power distribution box assembly and the main body ECU, it is helpful to
reinstall the EV control ECU and loosely install the nuts to hold it in place.
Continued...
Bulletin Number: WRF-25; Date: 01/15/26
Page 6 of 11
Step 3: Inspect connector No. K123, terminal 43, for any signs of damage. Minor rounding of the
corner is acceptable - refer to the image below for examples.
If no damage is found, continue to Step 4. If terminal 43 is damaged, contact Techline via TechShare.
Refer to the TechTIP Special Edition: Techline Case Submission Now Through TechShare for
additional instructions. Select the case type as Body Electrical and complete the WRF-25 worksheet,
ensure to attach clear pictures that clearly show the condition of the connector, terminal, and wiring
harness.
Continued...
Bulletin Number: WRF-25; Date: 01/15/26
Page 7 of 11
Step 4: Remove the Main Body ECU from the power distribution box assembly.
4.1 Press the claw on the distribution box assembly to unlock and hold it.
4.2 insert a flathead screwdriver wrapped in protective tape into the rib of the power distribution box
assembly and pry in the direction of the arrow.
4.3 Lift until the terminals of the main body ECU connector detaches from the power distribution box
4.4 Lift the rib on the main body ECU and remove the guide.
Caution: The main body ECU must not be damaged it will need to be reused.
4.5 Slide the main body ECU in the direction of the arrow to remove it.
4.6 Discard the power distribution box assembly.
Caution: Be careful not to touch the terminals of the main body ECU.
Continued...
Bulletin Number: WRF-25; Date: 01/15/26
Page 8 of 11
4.7 Refer to the figure and install the main body ECU into the new power distribution box
assembly
Caution:
• To avoid damaging the main body ECU, be sure to press the two points shown in the illustration
below within the push area with both hands when installing.
•
Confirm the engagement between the main body ECU and the power distribution box assembly
by listening for a locking sound. If the locking sound is not heard, visually inspect the locking
points and confirm that the power distribution box assembly is flush with the main body ECU.
Step 5: Reinstall power distribution box assembly
5.1 Remove the nuts that temporarily secured the EV control ECU, connect the connector for
the power distribution box assembly with main ECU and secure it with two nuts and one bolt.
Torque the nuts to 6.0 N·m (53.10 in-lb) and the bolt to 8.0 N·m (70.8 in-lb)
Continued...
Bulletin Number: WRF-25; Date: 01/15/26
Page 9 of 11
5.2 Connect all connectors to the power distribution box assembly main ECU and EV control
ECU. Ensure all connections are fully secured.
Step 6: Reinstall all interior components removed to access power distribution box assembly.
6.1 Reconnect the battery terminal and perform learning procedures
General / SETUP / WHEN DISCONNECTING OR
RECONNECTING BATTERY TERMINAL / AUTOMATIC LEARNING CHART
6.2 Using GTS+ check for any DTCs if no DTCs are present procedure is complete.
SERVICE PROGRAM IDENTIFICATION LABEL:
Type or print the necessary information on a Campaign Identification Label. The completed label
should be attached to the vehicle’s upper radiator support. Additional labels are available through
normal parts ordering channels. The part number is MSA6P1302, which comes as one sheet of 20
labels.
Part Number
MSA6P1302
Applicability
All Models
Description
Campaign Identification Label(contains
one sheet of 20 labels)
Order Quantity
1
Continued...
Bulletin Number: WRF-25; Date: 01/15/26
Page 10 of 11
CLAIM REIMBURSEMENT AND ENTRY PROCEDURES:
Credit to perform this recall will be based on properly completed repair order information. Retailers
may submit claims through Subarunet.com.
Labor Description
Labor Operation #
Labor Time
Fail Code
POWER DISTRIBUTION BOX ASSEMBLY REPLACEMENT
A100-322
1.3h
WRF-25
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: WRF-25; Date: 01/15/26
Page 11 of 11
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