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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© 2026 Subaru of America, Inc. All rights reserved.

SERVICE INFORMATION BULLETIN
APPLICABILITY: All 2026MY Vehicles Equipped w/ Gen4
Telematics

NUMBER: 07-240-26R

SUBJECT: DTC B2A20 Diag Strategy & Service Impact
Verification

REVISED: 04/30/26

DATE: 2/23/25

INTRODUCTION
This Service Information Bulletin was developed to provide interim guidance for vehicles exhibiting
DTC B2A20. Field investigation into the root cause is ongoing. If DTC B2A20 has been detected,
follow the service procedures outlined in this bulletin.
CRITICAL NOTE: Telematics messaging displayed to the customer may inaccurately state that the
system is “Inoperative.” This is legacy messaging. The Telematics system is NOT fully inoperative.
Most importantly, Automatic Crash Notification (ACN) remains fully functional even when B2A20 is
Current.

CUSTOMER ASSURANCE & SERVICE IMPACT:
When DTC B2A20 is Current, the Red Telematics LED will illuminate. If the DTC moves to History,
the LED will turn off, and full service functionality is restored. Inform customers that while the light
is on, only the following specific cloud-based services are impacted:
•
•
•
•
•

Infotainment/SXM: Satellite channels remain available; however, SXM IP (Xtra) functions are
disabled.
Navigation & VR: Cloud-based Traffic, RichPOI, and Natural Language Understanding (NLU)
are disabled. The system defaults to Embedded Navi/VR.
Roadside & Concierge: Calls cannot be initiated via the Center Information Display (CID). Calls
must be placed using the overhead hardware switch (iCall), which will connect directly to ERA.
Connectivity: WiFi Hotspot and Service Appointment Scheduler (SAS) will show error pop-ups.
CCU FOTA downloads will pause.
Remote Services: Valet Mode, Curfew warnings, and SendPOI synchronization are temporarily
disabled.

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: 07-240-26R; Revised: 04/30/26

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DO NOT replace the Data Communication Module (DCM) for a standalone B2A20 DTC.
Perform the following steps to ensure proper diagnosis and avoid unnecessary repair attempts:
1. Verify Concern: Perform a full system scan using SSM5.
2. Systems Check: Follow TSB 15-266-20R to confirm the overall health of the telematics system.
3. DTC Analysis:
•
•

No further action is required. Advise the customer that the system is functioning within the
current known parameters and continue driving.
If the DTC reoccurs, do not perform additional logging or repairs. The customer can continue
driving the vehicle to see if DTCs U1F0188, B22A4, or B22A5 are detected, pointing us in
the direction of a diagnosis.

4. Complex DTCs: If B2A20 is found in combination with U1F0188, B22A4, or B22A5, do not
ignore them. Proceed with the specific trouble-tree diagnosis for those secondary codes identified
in STIS.
Avoiding “Misdiagnosis by Association.”
A History B2A20 must not be used as a “catch-all” explanation for unrelated issues in the Telematics
or Infotainment systems. If the customer’s concern does not match the “Impacted Services” list in
Section 2, technicians must investigate other relevant DTCs, hardware failures, or customer concerns independently.

IMPORTANT NOTES:
•

Current DTC might impact SSM5 interaction with CCU resulting in complications for CP25
software update covered by TSB 15-335-25. In that case, please follow applicable diagnostic
procedures for each DTC as well as apply information presented earlier.

•

Additional resources for CP25 diagnostic are available on Subarunet: Service Operations &
Technical-> Forms/Downloads as shown below.

Continued...
Bulletin Number: 07-240-26R; Revised: 04/30/26

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REPAIR ORDER (RO) DOCUMENTATION & CUSTOMER MESSAGING
To maintain customer confidence and manage expectations regarding the ongoing B2A20
investigation, SOA requires retailers to provide clear, standardized messaging on all Repair Orders.
Retailers must confirm that emergency services are fully operational despite any legacy messaging
displayed in the MySubaru app or vehicle head unit.
Example 1: Comprehensive (Best for Service Advisor Notes)
Confirmed DTC B2A20 is the cause of the ‘System Inoperative’ notification. Per Subaru of
America (SOA) Bulletin 07-240-26R, the telematics system has been verified and is performing as expected. IMPORTANT: Emergency services, including the SOS button and Advanced
Automatic Crash Notification (AACN), remain 100% functional. Customer may experience
temporary loss of cloud-based Navigation, WiFi Hotspot, and Remote Valet/Curfew features.
No further repair is required at this time while a final software solution is being developed.
Example 2: Mid-Length (RO Format)
Verified DTC B2A20. This is a known condition under active investigation by SOA. While
the MySubaru app may report the system is inoperative, emergency services (SOS/AACN) are
FULLY FUNCTIONAL. System is operating within current parameters. Cloud-based features
(Navi/Remote Start/WiFi) may be temporarily disabled. No hardware replacement is necessary.
Example 3: Highly Condensed (Technician Notes)
DTC B2A20 confirmed. Per SOA TSB 07-240-26R, system is operational. SOS and Automatic
Crash Notification remain FULLY ACTIVE. Legacy ‘Inoperative’ msgs are inaccurate. Some
cloud/remote svcs disabled until software update. No repairs at this time.
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: 07-240-26R; Revised: 04/30/26

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