Service bulletin WQW-58R

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)
Type	Service bulletin
NHTSA id	10117558
Published by NHTSA	2017-09-14
Manufacturer's number	WQW-58R
Manufacturer's date	2017-08-14
NHTSA component	POWER TRAIN:AUTOMATIC TRANSMISSION:CONTROL MODULE (TCM/PCM/TECM); ELECTRICAL SYSTEM

NHTSA's summary

2.0L DIT Models Only. Subaru of America, Inc. has determined that vehicles affected by this Service Program require ECM reprogramming. This bulletin includes the service procedure for diagnosis and repair of customer concerns involving engine idle roughness or, in some cases, engine noise and/or damage resulting from spark knock (pre-ignition). The Engine Control Module logic has also been optimized requiring the ECM reprogramming.

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, Transmission and driveline, Automatic transmission, Transmission control module

Vehicles listed
SUBARU FORESTER	2014, 2015
SUBARU WRX	2015

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

Other bulletins for the same vehicles and component
Service	2023-05-08. Service bulletin. This announcement relates to specific 2014 Forester 2.5 Non?Turbo CVT models which have been identified as having an excess amount of fluid in the CVT transmission.
168913	2023-03-20. Service bulletin. CVT Component Design Changes
16-103-16R	2019-03-11. Service bulletin. This bulletin has been developed in response to a small number of customer concerns regarding fluid seepage found coming from the CVT assembly. Investigation has identified a likely source of the seepage to be the sealant used on the CVT?s oil pump chain cover. The repair involves removal, a thorough cleaning and inspection of the sealing surfaces followed by re-sealing the cover.
11-164-16R	2017-08-14. Service bulletin. This bulletin announces the availability of reprogramming files to optimize the ECM. These files will address customer concerns of a slight surging / decrease in engine power condition between approx. 2000-2500 RPM on light acceleration during high ambient temperatures (intake air temperatures exceeding 104 deg. F).
16-102-16	2017-08-14. Service bulletin. TSB: All Models Equipped with CVT Transmissions. This Service Information bulletin provides a new flow chart and additional diagnostic tools to assist Technicians with troubleshooting DTC P0841- SECONDARY OIL PRESSURE SENSOR PERFORMANCE.
16-103-16R	2017-08-14. Service bulletin. This bulletin has been developed in response to a small number of customer concerns regarding fluid seepage found coming from the CVT assembly. Investigation has identified a likely source of the seepage to be the sealant used on the CVT's oil pump chain cover. The repair involves removal, a thorough cleaning and inspection of the sealing surfaces followed by re-sealing the cover.
16-103-16	2017-08-14. Service bulletin. Only Models Equipped with TR690 CVT only. This bulletin has been developed in response to a small number of customer concerns regarding fluid seepage found coming from the CVT assembly. Investigation has identified a likely source of the seepage to be the sealant used on the CVT's oil pump chain cover. The repair involves removal, a thorough cleaning and inspection of the sealing surfaces followed by re-sealing the cover.
16-89-13	2017-03-07. Service bulletin. THIS SERVICE INFORMATION ANNOUNCEMENT PROVIDES INFORMATION REGARDING THREE NEW PRODUCTION ENHANCEMENTS TO THE CVT TRANSMISSION (MODEL TR690) USED IN THE FORESTER MODEL WITH 2.0L DIT(DIRECT INJECTION TURBO) ENGINE: • AN IN-LINE CVT FLUID FILTER HAS BEEN ADDED TO REDUCE THE POSSIBILITY OF CONTAMINATION ENTERING THE LOCK-UP CIRCUIT OF THE VALVE BODY • MACHINING OF AN EXISTING FLUID PASSAGE IN THE TRANSMISSION CASE TO ACCEPT THE NEW FILTER • A SMALLER CORRESPONDING PORT ON THE MATING SURFACE OF THE VALVE BODY ALONG WITH A SEALING O-RING WAS ADDED TO RETAIN THE FILTER IN THE TRANSMISSION CASE.
PM02	2017-03-02. Service bulletin. ADDITIONS TO REMANUFACTURED TRANSMISSION APPLICATIONS
03-67-12R	2017-02-28. Service bulletin. SUBARU OF AMERICA, INC. HAS EXTENDED THE AVAILABILITY OF REMANUFACTURED CVT TRANSMISSIONS TO INCLUDE CROSSTREK, FORESTER AND IMPREZA APPLICATIONS. PLEASE CHECK APPLICATIONS AND AVAILABILITY THROUGH NORMAL PARTS CHANNELS PRIOR TO MAKING VEHICLE REPAIRS. RETAILERS ARE REQUIRED TO USE A REMANUFACTURED UNIT FOR ALL REPAIRS REIMBURSED BY SUBARU THAT REQUIRE A MAJOR REPAIR OR REPLACEMENT, EXCEPT IN THE CASE OF A “NEW” AND “IN-STOCK” VEHICLE.