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Service bulletin 02-178-18R

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 id10155225
Published by NHTSA2019-03-25
Manufacturer's number02-178-18R
Manufacturer's date2019-02-22
NHTSA componentEQUIPMENT

NHTSA's summary

This Service Information bulletin announces a design change made to the rubber timing hole access plug to improve its retention and prevent water intrusion into the converter case.

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

Equipment and accessories

Vehicles listed
SUBARU ASCENT2019
SUBARU BRZ2013, 2014, 2015, 2016, 2017, 2018, 2019
SUBARU CROSSTREK2013 to 2015
SUBARU CROSSTREK2016, 2017, 2018, 2019
SUBARU FORESTER2011, 2012, 2013, 2014, 2015, 2016, 2017, 2018, 2019
SUBARU IMPREZA2012, 2013, 2014, 2015, 2016, 2017, 2018, 2019
SUBARU LEGACY2013, 2014, 2015, 2016, 2017, 2018, 2019
SUBARU OUTBACK2013, 2014, 2015, 2016, 2017, 2018, 2019
SUBARU WRX2015, 2016, 2017, 2018
SUBARU WRX STI2015, 2016, 2017, 2018, 2019 (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
18V4550002018-07-10. EQUIPMENT:OTHER:LABELS; TIRES
20152492015-06-04. Accessories
20152062015-05-15. Accessories
20144132014-09-22. Accessories
13V1590002013-04-24. EQUIPMENT
20130632013-02-25. Accessories
13V0610002013-02-25. EQUIPMENT; ELECTRICAL SYSTEM
20124442012-12-27. Accessories
12V2540002012-06-05. EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL

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
03-91-23R2024-05-02. Service bulletin. This bulletin announces the design change made to the front drive axle shaft assemblies to address cases of a clicking/cracking-type sound heard when driving with the steering wheel in the fully locked (left or right) position.
FAQ 15-317-24R2024-05-02. Service bulletin. T16 Warranty Extension (15-317-24R) Frequently Asked Questions.
FAQ 15-318-24R2024-05-02. Service bulletin. T16 VoLTE Warranty Extension (15-318-24R) Frequently Asked Questions.
15-317-24R2024-05-02. Service bulletin. In the interest of customer satisfaction, Subaru of America, Inc. (SOA) is extending the Data Communication Module (DCM) Warranty from 3 years (36 months) of 36,000 miles to 8 years (96 months) or 100,000 miles, whichever comes first.
15-318-24R2024-05-02. Service bulletin. This bulletin announces the availability of the DCM Bypass Box designed to be used as an alternative replacement part for Data Communication Module (DCM) in vehicles with no active STARLINK subscription. There will be a warranty extension for the DCM up to 8 years (96 months) or 150,000 miles.
09-119-242024-05-02. Service bulletin. This bulletin announces the extended warranty coverage for the Thermo Control valve (TCV) used the the models listed. The coverage will be extended to (15) fifteen years / 150,000 miles.
09-80-21R2024-05-02. Service bulletin. This bulletin announces availability of a new thermo control valve assembly. The new valve contains an enhanced stainless steel internal shaft for optimized durability along with advanced water proofing for the sensor portion.
15-312-23R2024-04-03. Service bulletin. This bulletin announces repair procedures to be used when diagnosing dark current draw (parasitic draw) on vehicles equipped with Gen 1 Data Control Modules.
15-321-23R2024-04-03. Service bulletin. This bulletin provides a repair procedure when diagnosing dark current draw on vehicles with GEN 1 Data Control Modules.
07-218-23R2024-04-03. Service bulletin. To satisfy current supply demands, a new Subaru alternative replacement battery is now available.