Subaru Ascent Service Bulletins (2023)

293 manufacturer communications on file.

• June 28, 2024•Document ID: 11002729

  Service Bulletin/Repair Instructions
  ELECTRICAL SYSTEM

  Mfr Comm. #:

  15-305-22R

  Date Added:

  July 1, 2024

  Manufacturer:

  SUBARU

  Summary

  This bulletin announces reprogramming file availability and provides a software update installation procedure to optimize the new Gen 4.5 Denso CP1.5 Audio and Navigation head units utilized in the models listed.

  Associated Products (12)

  2025 Subaru Forester2025 Subaru Legacy2025 Subaru Outback2024 Subaru Ascent2024 Subaru Crosstrek2024 Subaru Impreza2024 Subaru Legacy2024 Subaru Outback2024 Subaru WRX2023 Subaru Ascent2023 Subaru Legacy2023 Subaru Outback
  Associated Documents

  • DownloadMC-11002729-0001.pdf↗
• June 25, 2024•Document ID: 11002725

  Service Bulletin/Repair Instructions
  SERVICE BRAKES

  Mfr Comm. #:

  06-90-24

  Date Added:

  July 1, 2024

  Manufacturer:

  SUBARU

  Summary

  This bulletin provides diagnosis and procedure information to be applied when diagnosing potential fluid leaks on front and rear brake calipers. This information has been developed to reduce unnecessary brake caliper replacement.

  Associated Products (176)

  2025 Subaru Forester2025 Subaru Impreza2025 Subaru Legacy2025 Subaru Outback2024 Subaru Ascent2024 Subaru BRZ2024 Subaru Crosstrek2024 Subaru Forester2024 Subaru Impreza2024 Subaru Legacy2024 Subaru Outback2024 Subaru Solterra2024 Subaru WRX2024 Subaru XV CrossTrek2023 Subaru Ascent2023 Subaru BRZ2023 Subaru Crosstrek2023 Subaru Forester2023 Subaru Impreza2023 Subaru Legacy+ 156 more
  Associated Documents

  • DownloadMC-11002725-0001.pdf↗
• May 14, 2024•Document ID: 11000830

  Service Bulletin/Repair Instructions
  ENGINE; ELECTRICAL SYSTEM

  Mfr Comm. #:

  15-319-24

  Date Added:

  June 4, 2024

  Manufacturer:

  SUBARU

  Summary

  This bulletin announces the diagnostic procedures to be followed when encountering cases of the Remote Engine Start (RES) system being the only non-functioning feature with telematics.

  Associated Products (42)

  2024 Subaru Ascent2024 Subaru BRZ2024 Subaru Crosstrek2024 Subaru Forester2024 Subaru Impreza2024 Subaru Legacy2024 Subaru Outback2024 Subaru WRX2023 Subaru Ascent2023 Subaru BRZ2023 Subaru Crosstrek2023 Subaru Forester2023 Subaru Impreza2023 Subaru Legacy2023 Subaru Outback2023 Subaru WRX2022 Subaru Ascent2022 Subaru BRZ2022 Subaru Crosstrek2022 Subaru Forester+ 22 more
  Associated Documents

  • DownloadMC-11000830-0001.pdf↗
• May 14, 2024•Document ID: 11000822

  Service Bulletin/Repair Instructions
  ELECTRICAL SYSTEM; FORWARD COLLISION AVOIDANCE: WARNINGS

  Mfr Comm. #:

  07-225-24R

  Date Added:

  June 4, 2024

  Manufacturer:

  SUBARU

  Summary

  This bulletin announces the availability of new reprogramming files developed to address DTC B28C7 (EyeSight Fan Motor RPM), E5 (halt code deected by EyeSight Stereo Camera), and B28A6 (Internal Stereo Camera Communication 1).

  Associated Products (6)

  2024 Subaru Ascent2024 Subaru Legacy2024 Subaru Outback2023 Subaru Ascent2023 Subaru Legacy2023 Subaru Outback
  Associated Documents

  • DownloadMC-11000822-0001.pdf↗
• April 18, 2024•Document ID: 10253976

  Service Bulletin/Repair Instructions
  EQUIPMENT; LANE DEPARTURE; ELECTRICAL SYSTEM; FORWARD COLLISION AVOIDANCE

  Mfr Comm. #:

  07-225-24R

  Date Added:

  May 2, 2024

  Manufacturer:

  SUBARU

  Summary

  This bulletin announces the availability of new reprogramming files developed to address cases were a halt code E5, B28A6 and or DTC B28C7 is detected by the EyeSight Stereo Camera assembly.

  Associated Products (6)

  2024 Subaru Ascent2024 Subaru Legacy2024 Subaru Outback2023 Subaru Ascent2023 Subaru Legacy2023 Subaru Outback
  Associated Documents

  • DownloadMC-10253976-0001.pdf↗
• April 12, 2024•Document ID: 10253962

  Service Bulletin/Repair Instructions
  ELECTRICAL SYSTEM; EQUIPMENT

  Mfr Comm. #:

  15-311-23R

  Date Added:

  May 2, 2024

  Manufacturer:

  SUBARU

  Summary

  This bulletin provides instruction for use of a new reprogramming procedure to optimize the Denso Gen 4.5 Audio and Navigation system utilized in the models listed.

  Associated Products (8)

  2024 Subaru Ascent2024 Subaru Crosstrek2024 Subaru Impreza2024 Subaru Legacy2024 Subaru Outback2023 Subaru Ascent2023 Subaru Legacy2023 Subaru Outback
  Associated Documents

  • DownloadMC-10253962-0001.pdf↗
• April 9, 2024•Document ID: 10253953

  Service Bulletin/Repair Instructions
  POWER TRAIN; ELECTRICAL SYSTEM; ENGINE AND ENGINE COOLING

  Mfr Comm. #:

  09-117-24

  Date Added:

  May 2, 2024

  Manufacturer:

  SUBARU

  Summary

  This bulletin announces the availability of new reprogramming files developed to address cases of DTC P0890 (TCM Power Relay Sense Circuit Low) detected by the Engine Control Module (ECM).

  Associated Products (16)

  2024 Subaru Ascent2024 Subaru Legacy2024 Subaru Outback2023 Subaru Ascent2023 Subaru Legacy2023 Subaru Outback2022 Subaru Ascent2022 Subaru Legacy2022 Subaru Outback2021 Subaru Ascent2021 Subaru Legacy2021 Subaru Outback2020 Subaru Ascent2020 Subaru Legacy2020 Subaru Outback2019 Subaru Ascent
  Associated Documents

  • DownloadMC-10253953-0001.pdf↗
• March 28, 2024•Document ID: 10252553

  Service Bulletin/Repair Instructions
  ELECTRICAL SYSTEM; EQUIPMENT

  Mfr Comm. #:

  07-213-22R

  Date Added:

  April 3, 2024

  Manufacturer:

  SUBARU

  Summary

  This bulletin announces a new Genuine Subaru Replacement battery for use in applications where the current SOA821B700 battery is specified.

  Associated Products (12)

  2024 Subaru Ascent2024 Subaru Legacy2024 Subaru Outback2023 Subaru Ascent2023 Subaru Legacy2023 Subaru Outback2022 Subaru Legacy2022 Subaru Outback2021 Subaru Legacy2021 Subaru Outback2020 Subaru Legacy2020 Subaru Outback
  Associated Documents

  • DownloadMC-10252553-0001.pdf↗
• March 28, 2024•Document ID: 10252549

  Service Bulletin/Repair Instructions
  EQUIPMENT; ELECTRICAL SYSTEM

  Mfr Comm. #:

  7-213-22R

  Date Added:

  April 3, 2024

  Manufacturer:

  SUBARU

  Summary

  "This bulletin announces a new Genuine Subaru Replacement battery for use in applications where the current SOA821B700 battery is specified. This battery has higher capacity and is slightly larger in dimension."

  Associated Products (12)

  2024 Subaru Ascent2024 Subaru Legacy2024 Subaru Outback2023 Subaru Ascent2023 Subaru Legacy2023 Subaru Outback2022 Subaru Legacy2022 Subaru Outback2021 Subaru Legacy2021 Subaru Outback2020 Subaru Legacy2020 Subaru Outback
  Associated Documents

  • DownloadMC-10252549-0001.pdf↗
• March 28, 2024•Document ID: 10252547

  Service Bulletin/Repair Instructions
  ELECTRICAL SYSTEM; EQUIPMENT

  Mfr Comm. #:

  7-213-22R

  Date Added:

  April 3, 2024

  Manufacturer:

  SUBARU

  Summary

  "This bulletin announces a new Genuine Subaru Replacement battery for use in applications where the current SOA821B700 battery is specified. This battery has higher capacity and is slightly larger in dimension."

  Associated Products (2)

  2024 Subaru Ascent2023 Subaru Ascent
  Associated Documents

  • DownloadMC-10252547-0001.pdf↗
• March 25, 2024•Document ID: 10252494

  Service Bulletin/Repair Instructions
  ELECTRICAL SYSTEM; EQUIPMENT

  Mfr Comm. #:

  15-303-22R

  Date Added:

  April 3, 2024

  Manufacturer:

  SUBARU

  Summary

  This bulletin provides information for all Gen 3 Telematics and Cp 1.5 infotainment equipped vehicles, starting with 2023MY, allowing access to valet mode through the head unit.

  Associated Products (22)

  2025 Subaru Impreza2025 Subaru Outback2024 Subaru Ascent2024 Subaru BRZ2024 Subaru Crosstrek2024 Subaru Forester2024 Subaru Impreza2024 Subaru Legacy2024 Subaru Outback2024 Subaru Solterra2024 Subaru WRX2024 Subaru XV CrossTrek2023 Subaru Ascent2023 Subaru BRZ2023 Subaru Crosstrek2023 Subaru Forester2023 Subaru Impreza2023 Subaru Legacy2023 Subaru Outback2023 Subaru Solterra+ 2 more
  Associated Documents

  • DownloadMC-10252494-0001.pdf↗
• March 19, 2024•Document ID: 10252492

  Service Bulletin/Repair Instructions
  EQUIPMENT

  Mfr Comm. #:

  15-242-19R

  Date Added:

  April 3, 2024

  Manufacturer:

  SUBARU

  Summary

  This bulletin has been developed for use as a quick reference tool to aid in diagnosing operational concerns of the Gen 2 Telematics system’s remote access features.

  Associated Products (53)

  2024 Subaru Ascent2024 Subaru BRZ2024 Subaru Crosstrek2024 Subaru Forester2024 Subaru Impreza2024 Subaru Legacy2024 Subaru Outback2024 Subaru Solterra2024 Subaru WRX2024 Subaru XV CrossTrek2023 Subaru Ascent2023 Subaru BRZ2023 Subaru Crosstrek2023 Subaru Forester2023 Subaru Impreza2023 Subaru Legacy2023 Subaru Outback2023 Subaru Solterra2023 Subaru WRX2023 Subaru XV CrossTrek+ 33 more
  Associated Documents

  • DownloadMC-10252492-0001.pdf↗
• March 19, 2024•Document ID: 10252491

  Service Bulletin/Repair Instructions
  ELECTRICAL SYSTEM; EQUIPMENT

  Mfr Comm. #:

  15-219-18R

  Date Added:

  April 3, 2024

  Manufacturer:

  SUBARU

  Summary

  This bulletin addresses an error code 202 and or 204 when attempting to complete the STARLINK telematics subsription process.

  Associated Products (53)

  2024 Subaru Ascent2024 Subaru BRZ2024 Subaru Crosstrek2024 Subaru Forester2024 Subaru Impreza2024 Subaru Legacy2024 Subaru Outback2024 Subaru Solterra2024 Subaru WRX2024 Subaru XV CrossTrek2023 Subaru Ascent2023 Subaru BRZ2023 Subaru Crosstrek2023 Subaru Forester2023 Subaru Impreza2023 Subaru Legacy2023 Subaru Outback2023 Subaru Solterra2023 Subaru WRX2023 Subaru XV CrossTrek+ 33 more
  Associated Documents

  • DownloadMC-10252491-0001.pdf↗
• March 18, 2024•Document ID: 10252460

  Service Bulletin/Repair Instructions
  ENGINE AND ENGINE COOLING; ENGINE AND ENGINE COOLING:ENGINE:ENGINE CONTROL MODULE (ECU/ECM); EQUIPMENT

  Mfr Comm. #:

  09-114-23R

  Date Added:

  April 2, 2024

  Manufacturer:

  SUBARU

  Summary

  This bulletin announces the availability of reprogramming files for the Engine Control Module (ECM). This will address cases of DTC P04AE for the EVAP purge control valve stuck open.

  Associated Products (7)

  2024 Subaru Legacy2024 Subaru Outback2023 Subaru Ascent2023 Subaru Legacy2023 Subaru Outback2023 Subaru WRX2022 Subaru WRX
  Associated Documents

  • DownloadMC-10252460-0001.pdf↗
• March 13, 2024•Document ID: 10252456

  Service Bulletin/Repair Instructions
  EQUIPMENT; FORWARD COLLISION AVOIDANCE; ELECTRICAL SYSTEM

  Mfr Comm. #:

  07-225-24

  Date Added:

  April 2, 2024

  Manufacturer:

  SUBARU

  Summary

  "This bulletin announces the availability of new reprogramming files developed to address the following three symptoms: EyeSight camera cooling fans becomes inoperable with DTC B28C7; EyeSight system enters temporary halt mode; Internal Stereo Camera Communication detected. "

  Associated Products (6)

  2024 Subaru Ascent2024 Subaru Legacy2024 Subaru Outback2023 Subaru Ascent2023 Subaru Legacy2023 Subaru Outback
  Associated Documents

  • DownloadMC-10252456-0001.pdf↗
• March 11, 2024•Document ID: 10252453

  Service Bulletin/Repair Instructions
  SUSPENSION

  Mfr Comm. #:

  05-90-24R

  Date Added:

  April 2, 2024

  Manufacturer:

  SUBARU

  Summary

  This bulletin announces changes in design to the front strut assemblies which will address cases of rumbling and/or rattling coming from the undercarriage while going over bumps.

  Associated Products (5)

  2023 Subaru Ascent2022 Subaru Ascent2021 Subaru Ascent2020 Subaru Ascent2019 Subaru Ascent
  Associated Documents

  • DownloadMC-10252453-0001.pdf↗
• March 5, 2024•Document ID: 10252454

  Service Bulletin/Repair Instructions
  EQUIPMENT; EQUIPMENT:ELECTRICAL:INFOTAINMENT; ELECTRICAL SYSTEM

  Mfr Comm. #:

  18-225-22R

  Date Added:

  April 2, 2024

  Manufacturer:

  SUBARU

  Summary

  This bulletin provides the diagnostic procedure for Harman Infotainment Systems when DTC B2255 is detected. This update should prevent unnecessary replacement of the head unit or USB cable.

  Associated Products (24)

  2024 Subaru Ascent2024 Subaru Crosstrek2024 Subaru Forester2024 Subaru Impreza2023 Subaru Ascent2023 Subaru Crosstrek2023 Subaru Forester2023 Subaru Impreza2022 Subaru Ascent2022 Subaru Crosstrek2022 Subaru Forester2022 Subaru Impreza2021 Subaru Ascent2021 Subaru Crosstrek2021 Subaru Forester2021 Subaru Impreza2020 Subaru Ascent2020 Subaru Crosstrek2020 Subaru Forester2020 Subaru Impreza+ 4 more
  Associated Documents

  • DownloadMC-10252454-0001.pdf↗
• February 27, 2024•Document ID: 10251106

  Service Bulletin/Repair Instructions
  ELECTRICAL SYSTEM; EQUIPMENT

  Mfr Comm. #:

  15-315-23R

  Date Added:

  March 4, 2024

  Manufacturer:

  SUBARU

  Summary

  This bulletin announces the availability of new reprogramming files for the Data Communications Module (DCM). Customers with an active subscription will receive these files via OTA; to provide the best possible experience from the Telematics system.

  Associated Products (6)

  2024 Subaru Crosstrek2024 Subaru Legacy2024 Subaru Outback2023 Subaru Ascent2023 Subaru Legacy2023 Subaru Outback
  Associated Documents

  • DownloadMC-10251106-0001.pdf↗
• February 26, 2024•Document ID: 10251104

  Service Bulletin/Repair Instructions
  ELECTRICAL SYSTEM

  Mfr Comm. #:

  15-305-22R

  Date Added:

  March 4, 2024

  Manufacturer:

  SUBARU

  Summary

  This bulletin announces updated reprogramming files available to optimize the new Gen 4.5 Denso CP1.5 Audio and Navigation head units.

  Associated Products (9)

  2024 Subaru Ascent2024 Subaru Crosstrek2024 Subaru Impreza2024 Subaru Legacy2024 Subaru Outback2024 Subaru WRX2023 Subaru Ascent2023 Subaru Legacy2023 Subaru Outback
  Associated Documents

  • DownloadMC-10251104-0001.pdf↗
• February 6, 2024•Document ID: 10251099

  Service Bulletin/Repair Instructions
  EQUIPMENT; WHEELS

  Mfr Comm. #:

  WRH-23R

  Date Added:

  March 4, 2024

  Manufacturer:

  SUBARU

  Summary

  Subaru of America, Inc. (Subaru) has initiated a safety recall and stop sale for certain 2023 model year Ascent vehicles equipped with 20-inch wheels. Tires which were damaged during the mounting process may possibly cause damage to the internal structure of the tire, leading to structural failure and rapid tire deflation.

  Associated Products (1)

  2023 Subaru Ascent
  Associated Documents

  • DownloadMC-10251099-0001.pdf↗