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Service bulletin 15-305-22R

A bulletin is a manufacturer's communication to its dealers, as NHTSA indexes it. The summary is NHTSA's. The document is the manufacturer's: read it at NHTSA. A bulletin is not a recall, and listing a model year does not mean every vehicle of it is concerned.

The communication, as NHTSA indexes it (as of 2026-10-19)
TypeService bulletin
NHTSA id11016227
Published by NHTSA2025-04-01
Manufacturer's number15-305-22R
Manufacturer's date2025-03-24
NHTSA componentELECTRICAL SYSTEM

NHTSA's summary

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.

The document

The document is the manufacturer's. This site does not hold it. NHTSA files a document at one of these two addresses; we have not asked NHTSA which.

Components

Electrical system

Vehicles listed
SUBARU ASCENT2023, 2024, 2025
SUBARU CROSSTREK2024, 2025
SUBARU FORESTER2025
SUBARU IMPREZA2024, 2025
SUBARU LEGACY2023, 2024, 2025
SUBARU OUTBACK2023, 2024, 2025
SUBARU WRX2024

Listing a model year does not mean every vehicle of it is concerned: the document says which.

Recalls for the same vehicles and component
20236072023-11-09. Electrical
20234352023-08-04. Electrical
23V5510002023-08-04. ELECTRICAL SYSTEM: INSTRUMENT CLUSTER/PANEL

A recall listed here may apply to some of the same vehicles. Only the manufacturer can say whether it applies to one vehicle.

Other bulletins for the same vehicles and component
09-141-262026-10-05. Service bulletin. This Bulletin provides a diagnostic procedure for customer concerns about hesitation, reduced acceleration, or lack of power when driving uphill or under heavy engine load.
07-244-262026-10-05. Service bulletin. This Bulletin provides a repair procedure for increased dark current and unintended battery discharge that occurs in a small number of unique cases.
SubaruNet Announcement (M2026-10-05. Other. This announcement provides information on a new software update for the Midtronics Dss and DCA machines.
SubaruNet Announcement (T2026-10-05. Other. This announcement provides information on an enhancement of the TechShare CVT diagnostic assitance application.
18-244-262026-10-05. Service bulletin. "This Bulletin announces additional troubleshooting steps for the following DTCs: DTC C1956: RH Actuator Circuit DTC C1957: LH Actuator Circuit"
15-333-25R2026-10-05. Service bulletin. This bulletin contains illustrations of exchange components and their manufacturer as well as a description of the proper exchange procedure. This is an revised version of the original bulletin.
15-304-22R2026-10-05. Service bulletin. This bulletin has been developed to outline the steps for gathering basic but essential information during diagnosis of Infotainment concerns. This is an revised version of the original bulletin.
12-269-25R2026-10-05. Service bulletin. This bulletin announces the service procedures to be followed when encountering instances of water intrusion from the sunroof area.This is an revised version of the original bulletin.
12-258-25R2026-10-05. Service bulletin. This bulletin provides additional examples, diagnostics tips and installation tips as helpful aids to be used when working with sunroof seals and sunroof frame assemblies on Ascent models. This is an revised version of the original bulletin.
15-343-262026-10-05. Service bulletin. "This bulletin announces a design change to the cord assembly that connects the Center Infotainment Display (CID) to the CCU, addressing reports of CID screen flickering."