Technical Service Bulletins (TSBs) for the 2023 Ascent are official communications between Subaru & their dealerships that describe processes for troubleshooting or fixing certain common problems.
All vehicle manufacturers are required by U.S. law to make their TSBs available to the public.
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. Read More »
This bulletin addresses rumbling and or rattling coming from the undercarriage while traveling over bumps. Subaru has made a design change to the front strut assemblies to address this issue. Read More »
Subaru of America, Inc. (Subaru) has initiated a safety recall for certain 2023 model year Ascent vehicles that may be equipped with a front lower control arm with a loose castle nut. Read More »
This bulletin provides a procedure to address customer concerns of surface rust accumulating in the top center retaining nut area of the front strut mounts. Read More »
Subaru of America, Inc. (Subaru) has initiated a safety recall for certain 2023 model year Ascent vehicles that may be equipped with a front lower control arm with a loose castle nut. Read More »
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). Read More »
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. Read More »
This bulletin the announces availability of new reprogramming files for the Engine Control Module (ECM) developed to address cases of DTC P04AE (EVAP System Purge Control Valve a??Ba?? Performance / Stuck Open). Read More »
This bulletin announces design changes made to the Exhaust Pipe Front (EPF) to address concerns of rattle-type or fluttering sounds coming from the undercarriage during acceleration caused by cracking in the EPF. Read More »
This Service Information Bulletin announces additional diagnostic procedures and a detailed flow chart to be used when diagnosing customer concerns regarding the operation of the STARLINK Remote Engine Start (RES) feature. Read More »
This bulletin announces design changes made to the Exhaust Pipe Front (EPF) to address concerns of rattle-type or fluttering sounds coming from the undercarriage during acceleration caused by crackingin the EPF. Read More »
This bulletin announces diagnostic procedures and availability of new Engine Control Module (ECM) reprogramming files to address DTC P2404 (Evap System Leak Detection Pump Sense Circuit Range/Performance) detection. Read More »
This bulletin announces design changes made to the Exhaust Pipe Front (EPF) to address concerns of rattle-type or fluttering sounds coming from the undercarriage during acceleration caused by cracking in the EPF. Read More »
This service bulletin provides a temporary repair procedure to address vibrations and/or judder concerns experienced on turns during acceleration. Read More »
This Service Information Bulletin provides the diagnostic procedure for the STARLINKA? Remote Engine Start (RES). All Gen2 and Gen3 Telematics Equipped Models. Read More »
Effective with all 2015 model year cars and forward, the oil change interval is changing to 6,000 miles or 6 months, whichever comes first. Read More »
ENGINE AND ENGINE COOLING:ENGINE:ENGINE CONTROL MODULE (ECU/ECM)
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. Read More »
This bulletin the announces availability of new reprogramming files for the Engine Control Module (ECM) developed to address cases of DTC P04AE (EVAP System Purge Control Valve a??Ba?? Performance / Stuck Open). Read More »
ENGINE AND ENGINE COOLING:ENGINE:ENGINE CONTROL MODULE (ECU/ECM):SOFTWARE
This bulletin announces diagnostic procedures and availability of new Engine Control Module (ECM) reprogramming files to address DTC P2404 (Evap System Leak Detection Pump Sense Circuit Range/Performance) detection. Read More »
ENGINE AND ENGINE COOLING:EXHAUST SYSTEM:MANIFOLD/HEADER/MUFFLER/TAIL PIPE
This bulletin announces design changes made to the Exhaust Pipe Front (EPF) to address concerns of rattle-type or fluttering sounds coming from the undercarriage during acceleration caused by cracking in the EPF. Read More »
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). Read More »
This bulletin announces the availability new service procedure developed for the diagnosis of the following DTCs detected by the Transmission Control Module (TCM): Read More »
Subaru of America, Inc. (Subaru) has initiated a safety recall for certain 2023 model year Outback, Legacy, Ascent and Impreza vehicles. Please be advised that the parts for this recall are now available. Read More »
This Service Information Bulletin provides updated diagnostic procedures to follow and a brief questionnaire to complete when diagnosing an alleged Chain Slip condition on the TR580 and TR690 model CVT transmissions used in the models ... Read More »
This service bulletin provides a temporary repair procedure to address vibrations and/or judder concerns experienced on turns during acceleration. Read More »
This Bulletin provides updated diagnostic procedures to follow and a brief questionnaire to complete when diagnosing an alleged Chain Slip condition on the TR580 and TR690 model CVT transmissions used in the models listed. Read More »
This Service Information Bulletin provides updated diagnostic procedures to follow and a brief questionnaire to complete when diagnosing an alleged Chain Slip condition on the TR580 and TR690 model CVT transmissions used in the models ... Read More »
This Bulletin provides updated diagnostic procedures to follow and a brief questionnaire to complete when diagnosing an alleged Chain Slip condition on the TR580 and TR690 model CVT transmissions used in the models listed. Read More »
POWER TRAIN:AUTOMATIC TRANSMISSION:CONTROL MODULE (TCM/PCM/TECM)
This service bulletin provides a temporary repair procedure to address vibrations and/or judder concerns experienced on turns during acceleration. Read More »
POWER TRAIN:AUTOMATIC TRANSMISSION:TORQUE CONVERTER
This service bulletin provides a temporary repair procedure to address vibrations and/or judder concerns experienced on turns during acceleration. Read More »
This service bulletin provides a temporary repair procedure to address vibrations and/or judder concerns experienced on turns during acceleration. Read More »
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. Read More »
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. Read More »
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). Read More »
"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. Read More »
"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. Read More »
This bulletin announces a new Genuine Subaru Replacement battery for use in applications where the current SOA821B700 battery is specified. Read More »
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. Read More »
"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 ... Read More »
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. Read More »
This bulletin announces a new Genuine Subaru Replacement battery for use in applications where the current SOA821B700 battery is specified. Read More »
The following information 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. Read More »
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. Read More »
This bulletin announces the initialization service procedures to be followed when diagnosing and/or repairing Power Rear Gate (PRG) systems. Read More »
This bulletin announces the availability new service procedure developed for the diagnosis of the following DTCs detected by the Transmission Control Module (TCM): Read More »
This Bulletin provides helpful procedures and best practices to utilize when customers present with concerns relating to the operation of their Gen 2/Gen 3 Telematics system equipped Subaru. Read More »
This Service Information Bulletin is to inform you of the diagnosis procedure of the CP1/ CP1.5 Infotainment System when DTC B2256 is detected. Read More »
This bulletin announces a new Genuine Subaru Replacement battery for use in applications where the current SOA821B700 battery is specified. Read More »
The following information 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. Read More »
This Service Information Bulletin announces additional diagnostic procedures and a detailed flow chart to be used when diagnosing customer concerns regarding the operation of the STARLINK Remote Engine Start (RES) feature. Read More »
This bulletin announces a new Genuine Subaru Replacement battery for use in applications where the current SOA821B700 battery is specified. Read More »
The purpose of this bulletin is to provide replacement key and immobilizer information along with an overview of the Subaru Lock Information web-site. Read More »
This Service Information Bulletin has been developed to outline the steps for gathering basic but essential information during diagnosis of Infotainment concerns. Read More »
This bulletin announces diagnostic procedures and availability of new Engine Control Module (ECM) reprogramming files to address DTC P2404 (Evap System Leak Detection Pump Sense Circuit Range/Performance) detection. Read More »
This Service Information Bulletin provides updated diagnostic procedures to follow and a brief questionnaire to complete when diagnosing an alleged Chain Slip condition on the TR580 and TR690 model CVT transmissions used in the models ... Read More »
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. Read More »
This Service Information Bulletin provides the diagnostic procedure for the STARLINKA? Remote Engine Start (RES). All Gen2 and Gen3 Telematics Equipped Models. Read More »
This Bulletin provides the printable target chart needed to perform the wide angle mono camera adjustment procedure for the EyeSight system. Read More »
To improve our customera??s experience with software updates, bug fixes and performance enhancements, we are launching our first Head Unit FOTA to eligible customers who are subscribed to STARLINK Safety Plus. Read More »
This bulletin announces a new Genuine Subaru Replacement battery for use in applications where the current SOA821B700 battery is specified. Read More »
This bulletin contains illustrations of exchange components and their manufacturer as well as a description of the proper exchange procedure. Read More »
This bulletin contains illustrations of exchange components and their manufacturer as well as a description of the proper exchange procedure. Read More »
This Service Information Bulletin provides helpful procedures and best practices to utilize when customers present with concerns relating to the operation of their Gen 2/Gen 3 Telematics system equipped Subaru. Read More »
The following information 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. Read More »
This bulletin announces a new Genuine Subaru Replacement battery for use in applications where the current SOA821B700 battery is specified. Read More »
When attempting to complete the STARLINK Telematics subscription process, an Error Code 202 and / or 204 may occur preventing the process from completing successfully. Read More »
This Service Information bulletin has been developed for use as a quick reference tool to aid in diagnosing operational concerns of the Gen 2 Telematics systema??s remote access features. Read More »
The following information 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. Read More »
This bulletin announces a new Genuine Subaru Replacement battery for use in applications where the current SOA821B700 battery is specified. Read More »
This bulletin contains illustrations of exchange components and their manufacturer as well as a description of the proper exchange procedure. Read More »
This Bulletin has been developed to outline the steps for gathering basic but essential information during diagnosis of Infotainment concerns. Read More »
This bulletin contains illustrations of exchange components and their manufacturer as well as a description of the proper exchange procedure. Read More »
This bulletin announces a new Genuine Subaru Replacement battery for use in applications where the current SOA821B700 battery is specified. Read More »
This bulletin announces availability of new Harman audio unit amplifier units with revised internal logic designed to optimize efficiency while addressin customer concerns. Read More »
This bulletin contains illustrations of exchange components and their manufacturer as well as a description of the proper exchange procedure. Read More »
This bulletin announces a new Genuine Subaru Replacement battery for use in applications where the current SOA821B700 battery is specified. Read More »
This Bulletin provides the printable target chart needed to perform the wide angle mono camera adjustment procedure for the EyeSight system. Read More »
This bulletin provides a repair procedure to address a small number of customer concerns of the hood panel surface vibrating while driving. Read More »
This bulletin announces the initialization service procedures to be followed when diagnosing and/or repairing Power Rear Gate (PRG) systems. Read More »
This bulletin announces the initialization service procedures to be followed when diagnosing and/or repairing Power Rear Gate (PRG) systems. Read More »
The purpose of this bulletin is to provide replacement key and immobilizer information along with an overview of the Subaru Lock Information web-site. Read More »
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. Read More »
Subaru of America, Inc. (Subaru) is initiating a new safety recall and stop sale for certain 2023 model year Ascent vehicles equipped with 20-inch wheels. Read More »
Subaru of America, Inc. (Subaru) is initiating a new safety recall and stop sale for certain 2023 model year Ascent vehicles equipped with 20-inch wheels. Read More »
Subaru of America, Inc. (Subaru) is initiating a new safety recall and stop sale for certain 2023 model year Ascent vehicles equipped with 20-inch wheels. Read More »
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. Read More »
"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 ... Read More »
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. Read More »
This Bulletin provides the printable target chart needed to perform the wide angle mono camera adjustment procedure for the EyeSight system. Read More »
This Bulletin provides the printable target chart needed to perform the wide angle mono camera adjustment procedure for the EyeSight system. Read More »
This Bulletin provides helpful procedures and best practices to utilize when customers present with concerns relating to the operation of their Gen 2/Gen 3 Telematics system equipped Subaru. Read More »
This Service Information Bulletin provides the diagnostic procedure for the STARLINKA? Remote Engine Start (RES). All Gen2 and Gen3 Telematics Equipped Models. Read More »
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. Read More »
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. Read More »
"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. Read More »
"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. Read More »
This bulletin announces a new Genuine Subaru Replacement battery for use in applications where the current SOA821B700 battery is specified. Read More »
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. Read More »
This bulletin has been developed for use as a quick reference tool to aid in diagnosing operational concerns of the Gen 2 Telematics systema??s remote access features. Read More »
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. Read More »
"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 ... Read More »
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. Read More »
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. Read More »
The following information 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. Read More »
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. Read More »
This Bulletin provides helpful procedures and best practices to utilize when customers present with concerns relating to the operation of their Gen 2/Gen 3 Telematics system equipped Subaru. Read More »
This Service Information Bulletin is to inform you of the diagnosis procedure of the CP1/ CP1.5 Infotainment System when DTC B2256 is detected. Read More »
The following information 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. Read More »
This Service Information Bulletin announces additional diagnostic procedures and a detailed flow chart to be used when diagnosing customer concerns regarding the operation of the STARLINK Remote Engine Start (RES) feature. Read More »
This bulletin announces a new Genuine Subaru Replacement battery for use in applications where the current SOA821B700 battery is specified. Read More »
The purpose of this bulletin is to provide replacement key and immobilizer information along with an overview of the Subaru Lock Information web-site. Read More »
This Service Information Bulletin has been developed to outline the steps for gathering basic but essential information during diagnosis of Infotainment concerns. Read More »
This bulletin announces design changes made to the Exhaust Pipe Front (EPF) to address concerns of rattle-type or fluttering sounds coming from the undercarriage during acceleration caused by cracking in the EPF. Read More »
This Service Information Bulletin provides the diagnostic procedure for the STARLINKA? Remote Engine Start (RES). All Gen2 and Gen3 Telematics Equipped Models. Read More »
To improve our customera??s experience with software updates, bug fixes and performance enhancements, we are launching our first Head Unit FOTA to eligible customers who are subscribed to STARLINK Safety Plus. Read More »
This bulletin announces a new Genuine Subaru Replacement battery for use in applications where the current SOA821B700 battery is specified. Read More »
This bulletin contains illustrations of exchange components and their manufacturer as well as a description of the proper exchange procedure. Read More »
This bulletin contains illustrations of exchange components and their manufacturer as well as a description of the proper exchange procedure. Read More »
This bulletin provides a repair procedure to address a small number of customer concerns of the hood panel surface vibrating while driving. Read More »
This Service Information Bulletin provides helpful procedures and best practices to utilize when customers present with concerns relating to the operation of their Gen 2/Gen 3 Telematics system equipped Subaru. Read More »
When attempting to complete the STARLINK Telematics subscription process, an Error Code 202 and / or 204 may occur preventing the process from completing successfully. Read More »
This Service Information bulletin has been developed for use as a quick reference tool to aid in diagnosing operational concerns of the Gen 2 Telematics systema??s remote access features. Read More »
The following information 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. Read More »
This Bulletin has been developed to outline the steps for gathering basic but essential information during diagnosis of Infotainment concerns. Read More »
This bulletin announces availability of new Harman audio unit amplifier units with revised internal logic designed to optimize efficiency while addressin customer concerns. Read More »
This bulletin contains illustrations of exchange components and their manufacturer as well as a description of the proper exchange procedure. Read More »
The following information 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. Read More »
The following information 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. Read More »
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. Read More »
This Service Information Bulletin is to inform you of the diagnosis procedure of the CP1/ CP1.5 Infotainment System when DTC B2256 is detected. Read More »
This Service Information Bulletin has been developed to outline the steps for gathering basic but essential information during diagnosis of Infotainment concerns. Read More »
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. Read More »
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. Read More »
