NHTSA ID Number: 11033066
Manufacturer Communication Number: 15-261-20R
TSB/Document Date: 2026-06-01
Summary
This bulletin announces reprogramming file availability and provides a software update installation procedure to optimize the new Gen 4 Denso CP1 Audio and Navigation head units utilized in the models listed.
Model
VCPU Version
All Models
F11GHV072-280
2021MY
Model
MSOC Version
High
F31BHM181-980
Mid
F31BMM181-880
Base
F31BBM181-880
Model
DSP Version
All Models
02.26.09
Model
VCPU Version
All Models
F31BHV070-580
2022MY
Model
MSOC Version
High
FB1SHM181-780
Mid
FB1SMM181-680
Base
F31BBM181-880
Model
DSP Version
All Models
02.26.09
Model
VCPU Version
All Models
FB1SHV070-380
2022MY Wilderness
Model
MSOC Version
High
F51XHM181-880
Mid
F51XMM181-780
Model
DSP Version
All Models
02.26.09
Model
VCPU Version
All Models
F51XHV070-580
Continued...
Bulletin Number: 15-261-20R; Revised: 05/15/26
Page 21 of 68
4m) Enable the setting “Automatically Check for Updates” as shown in the steps below.
4n) Turn the ignition OFF, open the driver’s door then close the driver’s door to complete the
procedure.
WARRANTY / CLAIM 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.
For customer vehicles with a complaint within the Basic New Car Limited Warranty period or
covered by an active Subaru Added Security Gold plan, this repair may be submitted using the
following claim information:
Labor Description
Labor Operation #
Labor Time
Fail Codes
DENSO CP1 SOFTWARE UPDATE-INCLUDES VERSION CHECK
A832-286
.6H
ZTZ-48
(BASE, MID, HIGH)
REMINDER: The new Software Version number must be entered when prompted at claim entry.
NOTE: Retailers are now permitted to claim up to $5.00 per claim in Sublet to help offset the cost
of replacement USB drives. Repeated re-formatting of the USB drives used for reprogramming
can compromise their ability to operate properly. Over time, hardware connections can loosen and
stored data files can become corrupted. Retailers are responsible for replacing any worn or otherwise
inoperable USB drives as needed. This compensation is intended to help defray those costs.
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.
Continued...
Bulletin Number: 15-261-20R; Revised: 05/15/26
Page 22 of 68
“APPENDIX A”
Follow this procedure in the RARE case of “Software update setup is initializing…” message is displayed:
• If the screen shown below appears, WAIT for approximately 30 minutes or as long as necessary
(waiting for longer than 60 minutes might indicate system malfunction). In that case please
perform recovery according to the instructions in “Appendix B ” to allow the Software update
setup initialization process to complete.
Base
High/Mid
•
The screens shown below will be displayed when the process completes.
Base
High/Mid
1. Turn the ignition OFF, open the driver’s door, close the driver’s door and WAIT for 3 or more
minutes before proceeding further.
2. Open the driver’s door again and either turn the ignition ON (if a charger is connected) or start the
engine.
3. Go to Dealership Mode menu again (PRESS and HOLD the RIGHT-side temperature control
buttons (both up and down) and press the Tune / Scroll knob 6 times then release all to display the
Dealership Mode) and select Software Update as in STEP 4c beginning on pg. 11.
IMPORTANT NOTE: If this procedure is required, contact Techline as additional action may be
necessary.
Continued...
Bulletin Number: 15-261-20R; Revised: 05/15/26
Page 23 of 68
“APPENDIX B”
In case of retrying the software update after the first attempt of update fails.
•
If the first attempt of update fails with the message below, follow the steps described below 1-2 to
1-8 before retrying the software update.
1-1. Select OK in the screen below
High/Mid
Base
1-2. Turn the ignition switch or the engine OFF, and turn it ON again.
Caution: Do not remove battery terminal and keep battery power supply.
Base
High/Mid
Continued...
Bulletin Number: 15-261-20R; Revised: 05/15/26
Page 24 of 68
1-3. Select Software Update in the Dealership Mode diagnostics screen.
Base
High/Mid
1-4. When you see the screen below, wait for approx. 15 minutes until the initialization is
complete
Base
High/Mid
Continued...
Bulletin Number: 15-261-20R; Revised: 05/15/26
Page 25 of 68
1-5. You will see the screen below when the initialization is complete.
Base
High/Mid
1-6. Turn the ignition switch or the engine OFF, open the driver side door and close the door
then wait for 3 minutes.
1-7. Open the driver side door then turn the ignition switch or the engine ON.
1-8. Go to Dealership Mode menu again (PRESS and HOLD the RIGHT-side temperature
control buttons (both up and down) and press the Tune / Scroll knob 6 times then release all to
display the Dealership Mode) and select Software Update as in STEP 4c beginning on pg. 11.
Continued...
Bulletin Number: 15-261-20R; Revised: 05/15/26
Page 26 of 68
“APPENDIX C”
In case the Gracenote update popup screen appears or software initializing screen does not go
away for more than 20 minutes, please perform steps 2-1 to 2-11.
High/Mid
2-1. Select “Settings” in the Dealership Mode diagnostics screen.
High/Mid
Base
Base
Continued...
Bulletin Number: 15-261-20R; Revised: 05/15/26
Page 27 of 68
2-2. Select “Memory Initialization”
High/Mid
2-3. Select “OK”
After Memory Initialization, all settings are reset to factory default.
High/Mid
Base
Base
Continued...
Bulletin Number: 15-261-20R; Revised: 05/15/26
Page 28 of 68
2-4. You will see the following screen
High/Mid
Base
2-5. After a few seconds, system restarts itself.
2-6. Select “Software Update” in the Dealership Mode diagnostics screen.
Base
High/Mid
Continued...
Bulletin Number: 15-261-20R; Revised: 05/15/26
Page 29 of 68
2-7. When you see the screen below, wait for about 15 minutes until the initialization is complete
Base
High/Mid
2-8. You will see the screen below when the initialization is complete.
High/Mid
Base
2-9. Turn the ignition switch or engine OFF, open the driver side door and close the door then
wait for 3 minutes.
2-10. Open the driver side door then turn the ignition swatch or engine ON.
2-11. Go to Dealership Mode menu again (PRESS and HOLD the RIGHT-side temperature
control buttons (both up and down) and press the Tune / Scroll knob 6 times then release all to
display the Dealership Mode) and select Software Update as in STEP 4c beginning on pg. 11.
Continued...
Bulletin Number: 15-261-20R; Revised: 05/15/26
Page 30 of 68
“APPENDIX D”
Denso Gen 4 Software Update Timeline (TSB Number: 15-261-20)
Update #
Model Year: Version
Release
Date:
NEW Software Version ID #:
Conditions Addressed:
0
2020
0
9/1/2019
F11GHM020-501/502 (High model software)
F11GMM020-501/502 (Mid model software)
F11GBM020-501/502 (Base model software)
Start of Production for 20MY Outback/Legacy
1
2020
RC1912
2/24/2020
F11GHM021-503 (High model software)
F11GMM021-503 (Mid model software)
F11GBM0021-503 (Base model software)
- See “Conditions Addressed by Update #1” as
outlined in “Appendix C” below.
2
2020
RC2003
6/24/2020
F11GHM022-504 (High model software)
F11GMM022-504 (Mid model software)
F11GBM022-504 (Base model software)
See “Conditions Addressed by Update #2” as
outlined in “Appendix C” below.
F11GHM042-380 (High model software)
F11GMM042-380 (Mid model software)
F11GBM032-280 (Base model software)
See “Conditions Addressed by Update #3” as
outlined in “Appendix C” below
2020
3
RC2011
12/14/2020
F31BHM040-980 (High model software)
F31BMM040-980 (Mid model software)
F31BBM030-880 (Base model software)
2021
2020
F11GHM072-582 (High model software)
F11GMM072-582 (Mid model software)
F11GBM072-582 (Base model software)
2021
F31BHM071-182 (High model software)
F31BMM071-182 (Mid model software)
F31BBM071-182 (Base model software)
4
RC2105
10/15/2021
2022
FB1SHM070-882 (High model software)
FB1SMM070-882 (Mid model software)
FB1SBM070-882 (Base model software)
2022
Wilderness
F51XHM071-082 (High model software)
F51XMM071-082 (Mid model software)
2020
F11GHM112-680 (High model software)
F11GMM112-680 (Mid model software)
F11GBM112-680 (Base model software)
RC2111
2022
2022
Wilderness
See “Conditions Addressed by Update #5” as
outlined in “Appendix E” below
F31BHM111-280 (High model software)
F31BMM111-280 (Mid model software)
F31BBM111-280 (Base model software)
2021
5
See “Conditions Addressed by Update #4” as
outlined in “Appendix C” below
1/28/202
FB1SHM110-980 (High model software)
FB1SMM110-980 (Mid model software)
FB1SBM110-980 (Base model software)
F51XHM111-180 (High model software)
F51XMM111-180 (Mid model software)
Bulletin Number: 15-261-20R; Revised: 05/15/26
Continued...
Page 31 of 68
Update #
6
Model Year: Version
Release
Date:
NEW Software Version ID #:
2020
F11GHM122-780 (High model software)
F11GMM122-780 (Mid model software)
F11GBM122-780 (Base model software)
F11GMM122-370 (MID FOTA Software)
F11GMM122-570 (MID FOTA Software)
F11GMM122-670 (MID FOTA Software)
F11GHM122-370 (HIGH FOTA Software)
F11GHM122-570 (HIGH FOTA Software)
F11GHM122-670 (HIGH FOTA Software)
2021
F31BHM121-380 (High model software)
F31BMM121-380 (Mid model software)
F31BBM121-380 (Base model software)
F31BMM120-970 (MID FOTA SOFTWARE)
F31BMM121-170 (MID FOTA SOFTWARE)
F31BMM121-270 (MID FOTA SOFTWARE)
F31BHM120-970 (HIGH FOTA SOFTWARE)
F31BHM121-170 (HIGH FOTA SOFTWARE)
F31BHM121-270 (HIGH FOTA SOFTWARE)
2022
RC2202
4/22/2022
Conditions Addressed:
See “Conditions Addressed by Update #6” as
outlined in “Appendix E” below
FB1SHM121-080 (High model software)
FB1SMM121-080 (Mid model software)
FB1SBM121-080 (Base model software)
FB1SMM120-770 (MID FOTA SOFTWARE)
FB1SMM120-870 (MID FOTA SOFTWARE)
FB1SMM120-970 (MID FOTA SOFTWARE)
FB1SHM(120-770 (HIGH FOTA SOFTWARE)
FB1SHM120-870 (HIGH FOTA SOFTWARE)
FB1SHM120-970 (HIGH FOTA SOFTWARE)
F51XHM121-280 (High model software)
F51XMM121-280 (Mid model software)
F51XMM120-970 (MID FOTA SOFTWARE)
F51XMM121-070 (MID FOTA SOFTWARE)
F51XMM121-170 (MID FOTA SOFTWARE)
F51XHM120-970 (HIGH FOTA SOFTWARE)
F51XHM121-070 (HIGH FOTA SOFTWARE)
F51XHM121-170 (HIGH FOTA SOFTWARE)
2022
Wilderness
7
2020
RC2208
10/28/2022
F11GHM132-880 (High model software)
F11GMM132-880 (Mid model software)
F11GBM132-880 (Base model software)
2021
RC2208
10/28/2022
F31BHM131-480 (High model software)
F31BMM131-480 (Mid model software)
F31BBM131-480 (Base model software)
2022
RC2208
10/28/2022
FB1SHM131-180 (High model software)
FB1SMM131-180 (Mid model software)
FB1SBM131-180 (Base model software)
2022
Wilderness
RC2208
10/28/2022
F51XHM131-380 (High model software)
F51XMM131-380 (Mid model software)
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TSB/Document ID: 15-261-20R
Replacement Service Bulletin Number:
MFR Communication Date: 2026-05-15
MFR Internal Campaign ID/Software Version:
Communication Type: Service Bulletin/Repair Instructions
NHTSA Components: ELECTRICAL SYSTEM
MFR Component System:
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