2026 Subaru Ascent TSBs
53 Technical Service Bulletins across 13 categories
Categories
Pre-Delivery & Maintenance
12 bulletinsThis announcement provides WRH-26 recall information for owner contact and a vehicle disclosure form.
This announcement provides WRH-26 recall information for customers.
This announcement provides information on a temporary process for addressing affected SSLP vehicles under the WRH-26...
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recall.
This Service Information Bulletin was developed to provide removal and installation tips to be followed when working...
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with EyeSight Stereo Cameras.
This bulletin contains additional information for recommended materials listed in the Service Manuals for individual...
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models.
This bulletin contains additional information for recommended materials listed in the Service Manuals for individual...
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models.
This announcement provides information on the use of aftermarket services or tools for programming immobilizer...
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keys/fobs.
This bulletin contains additional information for recommended materials listed in the Service Manuals for individual...
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models.
This Subaru service and technical support line newsletter provides information on the next phase of TechShare.
This Service Information Bulletin provides the Service Manual Correction to the diagnostic procedure for DTC B2A16...
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(Immobilizer Key Collation Diagnosis).
Subaru service article locator.
Subaru service article locator.
Software & Calibration
7 bulletinsThis announcement provides information on a new software update for the Midtronics Dss and DCA machines.
This announcement provides an update to all 2027 model year Subaru warranty coverages for wear items and adjustments.
This announcement provides an update to the WRH-26 certification label recall.
WRH-26 Certification Label Non-Compliance Recall- Parts and SSLP Process Updates.
This announcement provides an update for retailer inventory affected by the WRH-26 non-compliance recall.
This announcement is to inform retailers of the non-compliance recall/stop sale parts update and repair procedure.
This announcement has been created to address difficulties with software updates on Subaru Select Monitors with DST-010...
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interface firmware has been updated.
Other
6 bulletinsThis bulletin contains illustrations of exchange components and their manufacturer as well as a description of the proper exchange procedure.
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This is an revised version of the original bulletin.
Techtips newsletter locator index.
This bulletin contains illustrations of exchange components and their manufacturer as well as a description of the proper exchange procedure.
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This is an revised version of the original bulletin
This announcement provides information on WRH-26 affected CPO and Used Vehicle Inventory.
This bulletin contains information to help when attempting to complete the STARLINK Telematics subscription process, an...
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Error Code 202 and / or 204 may occur preventing the process from completing successfully
This bulletin contains illustrations of exchange components and their manufacturer as well as a description of the...
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proper exchange procedure.
Infotainment
5 bulletinsThis bulletin has been developed to outline the steps for gathering basic but essential information during diagnosis of Infotainment concerns.
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This is an revised version of the original bulletin.
This bulletin announces a reprogramming file availability and provides a software update installation procedure to...
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optimize the new Gen 4.5 Denso CP1.5 Audio and Navigation head units utilized in the models listed. This is an revised version of the original bulletin.
This Bulletin has been developed to outline the steps for gathering basic but essential information during diagnosis of Infotainment concerns.
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(This is an revised version of the original bulletin.)
This bulletin provides instruction for use (FOTA) of a new reprogramming procedure to optimize the Denso Gen 4.5 Audio...
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and Navigation system utilized in the models listed. (This is an revised version of the original bulletin).
"This bulletin provides a new diagnostic procedure for vehicles equipped with a Denso CP 1, 1.5 and 2.5 head units to...
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provide an enhanced version of the troubleshooting steps for Sound does not come out from the speaker."
Engine
4 bulletinsThis Bulletin provides a diagnostic procedure for customer concerns about hesitation, reduced acceleration, or lack of...
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power when driving uphill or under heavy engine load.
This bulletin provides updated parts information and a service procedure to follow for removing accumulated carbon...
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deposits from fuel injectors and internal engine components (e.g. intake valves and / or manifold, and combustion chambers). (This is an revised version of the original bulletin.)
This bulletin provides updated parts information and a service procedure to follow for removing accumulated carbon...
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deposits from fuel injectors and internal engine components (e.g. intake valves and / or manifold, and combustion chambers). (This is an revised version of the original bulletin.)
This Bulletin provides the diagnostic procedure for the STARLINK Remote Engine Start (RES).
Transmission
4 bulletinsThis announcement provides information on an enhancement of the TechShare CVT diagnostic assitance application.
This Announcement provides diagnostic assistance for CVT issues.
This bulletin provides guidance when diagnosing chain slip, judder, shudder, and hesitation concerns on the TR690 model...
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CVT transmissions used in the models listed. (This is an revised version of the original bulletin.)
This announcement provides information on the remanufactured CVT transmission program.
Body & Paint
3 bulletinsThis bulletin provides paint code information for 2027 model year vehicles.
This bulletin provides additional examples, diagnostics tips and installation tips as helpful aids to be used when...
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working with sunroof seals and sunroof frame assemblies on Ascent models. This is an revised version of the original bulletin.
This announcement is requesting retailer staff to retain the EyeSight protective hood covers from Generation 4 EyeSight...
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cameras.
Electrical
3 bulletinsThis Service Information Bulletin outlines a systematic procedure for diagnosing parasitic draw (dark/standby current)...
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in vehicles experiencing battery drain when the ignition is off, leading to no-start conditions or frequent jump-starts.This is an revised version of the original bulletin.
This bulletin announces the diagnostic procedures to be used when DTCs B1571(REFERENCE CODE INCOMPATIBILITY IMMOBILIZER...
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CM TO ECM) and B1572(IMM CIRCUIT EXCEPT ANTENNA CIRCUIT) are detected by Keyless Access with Push Button Start(KACM).
This bulletin announces a new Genuine Subaru Replacement battery for use in applications where the current SOA821B700...
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battery is specified.
Hybrid & EV
2 bulletinsSubaru of America, Inc.
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(Subaru) has initiated a non-compliance recall for certain 2026 model year Crosstrek Hybrid vehicles, 2025-2026 model year Forester & Forester Hybrid vehicles, and 2019- 2026 Ascent vehicles due to incorrect information listed on the certification label. This is an revised version of the original bulletin.
Subaru of America, Inc.
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(Subaru) has initiated a non-compliance recall for certain 2026 model yearCrosstrek Hybrid vehicles, 2025-2026 model year Forester & Forester Hybrid vehicles, and 2019- 2026 Ascent vehicles due to incorrect information listed on the certification label. (This is an revised version of the original bulletin.)
Fuel System
2 bulletinsThis service bulletin outlines the diagnostic and repair procedure for white smoke emitted from the exhaust after startup.
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This is an revised version of the original bulletin.
This bulletin outlines the diagnostic and repair procedure for white smoke emitted from the exhaust after startup.
Tires & Wheels
2 bulletinsThis Service Information Bulletin was developed to provide interim guidance for vehicles exhibiting DTC B2A20.
This Service Information Bulletin was developed to provide interim guidance for 2026 model year vehicles exhibiting DTC...
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B2A20 with gen 4 Telematics.
HVAC & Climate
2 bulletinsThis bulletin announces the new procedure and Warranty Fail Code for FirstTime air conditioning (A/C) performance...
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concerns possibly resulting from an undetected A/C refrigerant leak.
This bulletin announces the new procedure and Warranty Fail Code for FirstTime air conditioning (A/C) performance...
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concerns possibly resulting from an undetected A/C refrigerant leak.
Steering
1 bulletinThis Bulletin provides the diagnostic procedures to be followed when addressing customer concerns of steering...
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wheel/vehicle body vibration when driving at highway speeds when tire/wheel balance is suspected.