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Service bulletin 18-219-22

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 id10213177
Published by NHTSA2022-06-03
Manufacturer's number18-219-22
Manufacturer's date2022-05-12
NHTSA componentELECTRICAL SYSTEM

NHTSA's summary

This bulletin announces the Service Manual correction for the diagnostic trouble tree for DTC C2521 and/or DTC 21.

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

Trouble codes named

C2521

Vehicles listed
SUBARU CROSSTREK2013 to 2015
SUBARU CROSSTREK2016, 2017
SUBARU FORESTER2014, 2015, 2016, 2017, 2018
SUBARU IMPREZA2012, 2013, 2014, 2015, 2016

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

Recalls for the same vehicles and component
20191912019-04-18. Electrical
20174872017-10-06. Electrical
16V7380002016-10-13. ELECTRICAL SYSTEM
20164922016-10-07. Electrical
13V0610002013-02-25. EQUIPMENT; ELECTRICAL SYSTEM

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
SubaruNet Announcement (M2026-10-05. Other. This announcement provides information on a new software update for the Midtronics Dss and DCA machines.
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.
15-308-23R2026-09-03. Service bulletin. This Service Information Bulletin outlines a systematic procedure for diagnosing parasitic draw (dark/standby current) 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.
15-304-22R2026-09-03. 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.)
Article Locator2026-09-03. Other. Techtips newsletter locator index.
15-333-25R2026-09-03. 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
16-156-25R2026-07-01. Service bulletin. This bulletin announces a design change made to the CVT Control Valve Body which incorporates an enhanced valve sleeve to improve durability. (This is an revised version of the orignal bulletin.)
19-02-262026-07-01. Service bulletin. This bulletin provides information on how to identify which high voltage battery repairs can be performed at the retailer level.
16-156-25R2026-06-01. Service bulletin. This bulletin announces a design change made to the CVT Control Valve Body which incorporates an enhanced valve sleeve to improve durability.