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Service bulletin 07-178-21R

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 id10231301
Published by NHTSA2023-02-06
Manufacturer's number07-178-21R
Manufacturer's date2023-01-11
NHTSA componentELECTRICAL SYSTEM

NHTSA's summary

This Service Information bulletin is being released as guidance for proper testing and charging of vehicle batteries.

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 SUBARU

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