WenmarOpen by Wenmar Pro

Service bulletin 15-226-18R

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 id10146468
Published by NHTSA2018-11-05
Manufacturer's number15-226-18R
Manufacturer's date2018-09-05
NHTSA componentELECTRICAL SYSTEM; EQUIPMENT:ELECTRICAL; EQUIPMENT

NHTSA's summary

This bulletin provides troubleshooting steps to follow when diagnosing customer concerns regarding USB functionality. Please start by completing the Harman Investigation Guide Questionnaire as it gathers important details which will help with diagnosis and will be required should the condition not be resolved by this troubleshooting. While completing the questionnaire, follow the question flow based on the customer concern. Answer each related question noting the results to each in detail while performing the diagnostics. Review the entire bulletin before beginning in order to understand the flow for the listed concern. If the concern you have is not listed, check the Service Manual ?Infotainment (Diagnostics) - Diagnostics with Phenomena? section as a starting point.

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, Equipment and accessories

Vehicles listed
SUBARU ASCENT2019
SUBARU BRZ2018, 2019
SUBARU CROSSTREK2018, 2019
SUBARU IMPREZA2017, 2018, 2019
SUBARU LEGACY2018, 2019
SUBARU OUTBACK2018, 2019
SUBARU WRX2019
SUBARU WRX STI2019 (the catalog's model; the bulletin names a series or trim of it)

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

Recalls for the same vehicles and component
26V4360002026-07-07. EQUIPMENT:OTHER:LABELS
20230622023-02-14. Electrical
23V0800002023-02-14. ELECTRICAL SYSTEM:12V/24V/48V BATTERY
20227032022-12-08. Electrical
22V9070002022-12-08. ELECTRICAL SYSTEM:WIRING:INTERIOR/UNDER DASH
20212282021-04-15. Electrical
21V2640002021-04-15. ELECTRICAL SYSTEM:SOFTWARE; ENGINE AND ENGINE COOLING:ENGINE:ENGINE CONTROL MODULE (ECU/ECM):SOFTWARE; ELECTRICAL SYSTEM:IGNITION; ENGINE AND ENGINE COOLING:EXHAUST SYSTEM:MANIFOLD/HEADER/MUFFLER/TAIL PIPE
19V7430002019-10-18. ELECTRICAL SYSTEM:SOFTWARE; ELECTRICAL SYSTEM:IGNITION
18V7730002018-11-01. ELECTRICAL SYSTEM:SOFTWARE; FUEL SYSTEM, GASOLINE

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.
15-322-25R2026-10-05. Service bulletin. In the interest of customer satisfaction, Subaru of America, Inc. (SOA) is extending the New Car Limited Warranty coverage for the CP1 & Gen 3.1 Head Unit used in the listed models and model years to (8) eight years / 150,000 miles to cover certain qualifying repairs to the infotainment audio system. 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.
12-258-25R2026-10-05. 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.
09-98-22R2026-09-03. Service bulletin. This bulletin announces the availability of new reprograming files for the Engine Control Module (ECM) developed to remedy the following DTCs: P0016, P0017, P0018, P0019, P0014, P0024, P0128, P2109. If any of the DTCs listed above are found to be stored in the ECM, follow the procedures outlined in the bulletin. This is an revised version of the original bulletin.