procedure.
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WARRANTY / CLAIM INFORMATION:
For vehicles 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:
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.

Labor Description

Labor
Operation #

Labor
Time

Fail Codes

DENSO CP1 SOFTWARE UPDATE-INCLUDES VERSION CHECK

A031-173

0.5

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 repair

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“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.

•

You will see the screen below when the initialization is complete.

1. Turn the ignition switch or the engine OFF, open the driver side door and close the door then wait
for 3 minutes.
2. Open the driver side door then turn the ignition switch or the engine ON.
3. Go to Dealership Mode diagnostics then select Software Update as in STEP 4c.
IMPORTANT NOTE: If this procedure is required, contact Techline as additional action may be
necessary.
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“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, please perform procedures 1-2 to 1-8
before retrying the software update.

1-1. Select OK in the screen below

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.

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1-3. Select Software Update in the Dealership Mode diagnostics screen.

1-4. When you see the screen below, wait for approx. 15 minutes until the initialization is
complete

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1-5. You will see the screen below when the initialization is complete.

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 diagnostics then select Software Update as in STEP 4c.

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“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 procedures 2-1 to 2-11.

2-1. Select “Settings” in the Dealership Mode diagnostics screen.

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2-2. Select “Memory Initialization”

2-3. Select “OK”
After Memory Initialization, all settings are reset to factory default.

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2-4. You will see the following screen

2-5. After a few seconds, system restarts itself.
2-6. Select “Software Update” in the Dealership Mode diagnostics screen.

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2-7. When you see the screen below, wait for about 15 minutes until the initialization is complete

2-8. You will see the screen below when the initialization is complete.

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 switch or engine ON.
2-11. Go to Dealership Mode diagnostics then select Software Update.

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“APPENDIX D”
Denso Gen 4 Software Update Timeline (TSB Number: 15-297-22)
Update #

Model Year: Version

Release
Date:

NEW Software Version ID #:

0

2022

0

10/1/2021

F41CMM091-781
F41CMM101-880

1

2022

10

6/10/2022

F41CMM122-080

2022
2

F41CMM132-180
11

12/29/2022

2023

FG1CMM130-680

2022

F41CMM142-280

3

12

6/30/2023

2023

FG1CMM140-780

Conditions Addressed:
- SOP for 22MY BRZ

- See "Conditions Addressed by Update #1" as
outlined in "Appendix E" below

- See “Conditions Addressed by Update #2” as
outlined in “Appendix E” below

- See “Conditions Addressed by Update #3” as
outlined in “Appendix E” below

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“APPENDIX E”
Symptoms Addressed By Update #3
Number
1

Symptoms to be Improved:
Unexpected CP1 system reboot resulting from an inter reset to sync internal
communication with Bluetooth module.

2

CID restarts itself right after engine is started.

3

CID resets and reboots.

4

Loss of audio output for AM/FM

5

Loss of audio output from all sources. Voice from telematics, meter buzzer or beep
sound are not affected.

6

Sound is lost when playing Bluetooth audio even though the screen is displayed
without problem. It can occur when the audio source is switched repeatedly between
the Bluetooth and others.

7

SXM radio output is lost after terminating a handsfree phone call.

8

No audio played back when using CarPlay.

9

Cyclic short noise like a drilling or vibration is heard from speakers.

10

After the engine is started, a message of “Loading Navigation...” continues to be displayed, but the map is not displayed.

11

Vehicle position on navigation map erroneously moves to zero degrees latitude and zero
degrees longitude (0°N 0°E or west of Africa in the Atlantic ocean).

12

Navigation map scale is changed to the lowest setting (globe is displayed).

13

When “Call” button is pressed in “Confirm Destination” screen of Navigation system
(to call the destination site,) the call can be made but the screen does not transit to phone
call screen.

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Number
14

Symptoms to be Improved:
When selecting “Phone-”>”Message,” message received time is displayed incorrectly as
“1/1/0.”

It can occur with an Android phone with a specific Android OS (Pixel 6, Pixel4a,
Pixel4XL, Xperia etc. ) in which time zone data is attached to the message receiving
time.

15

Even when using the same mobile device that was paired previously, a message of “Are
you sure you want to activate this profile?” is prompted and confirmation is needed to
activate the device.

16

Cover art of previous music is displayed when playing music without cover art in USB
audio. It can occur when music with and without cover art is mixed and stored together
a single USB.

17

Command “Play Artist ”” to play all music of particular artist in USB
music mode, only the first item listed for the artist is played.

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Number
18

Symptoms to be Improved:
While playing music from USB, the music title displayed on the screen differs from
what is being played. It can occur by the following sequence of operation:

1. Display a list of music on the USB audio screen.
2. Change the screen to other screen than the music list.
3. The music play is continued and moved on to a music in a different music list.
4. Change the screen back to the music list in the USB audio screen.
19

In USB music mode, some music is skipped and the music in the next folder is started.
Under following condition
1. Play USB music in “Folder” mode with repeat mode setting “Repeat All.”
2. Turn Ignition Switch off then open/close door and keep it locked for more than 5
minutes.
3. Turn Ignition Switch on and operate “Track Up/Down” on the audio system.

20

The mode does not switch to Media, after “Media” icon is selected.

21

When selecting shortcut for SXM channel on “Home” screen, the screen is changed to
SXM but no sound is coming or no channel name is displayed.

22

When using FOTA service to update the software by selecting “Setting” > “Software
Update,” a message of “A new software update is available. Would you like to download
it now?” is displayed but the downloading does not start after pressing “OK.” When this
symptom occurs, it comes back to the “Software Update” screen. The downloading can
be started by pressing the “Update” on the “Software Update” screen.
(Temporary solution.)

Continued...
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Number
23

Symptoms to be Improved:
When Pre-Collision Braking System is activated, a message of “Obstacle Detected” is
displayed on the information bar and does not go away.

24

Preset SXM channel cannot be selected by satellite switch on the steering wheel.

25

Even after setting the date of next scheduled maintenance in Reminder screen, the date
is displayed as “--”. It can occur when only the date of schedule maintenance is set without entering distance.

26

When pop up screen (like suggestion of taking a rest) is displayed on CarPlay screen,
the screen does not transit to proper screen (like destination search screen) and goes
back to CarPlay screen even after pressing “Yes.”

27

When selecting a music by or using voice recognition system, a
wrong music that had been played at the end of previous time is played. It can occur by
the following sequence of operation:
1. Play music in USB audio mode.
2. Change the source from USB to another one.
3. Turn Ignition Switch off then on.
4. Start to play music by pronouncing or though voice recognition
system.