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Service bulletin IS-18900A

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 id10138482
Published by NHTSA2018-05-21
Manufacturer's numberIS-18900A
Manufacturer's date2018-04-13
NHTSA componentELECTRICAL SYSTEM

NHTSA's summary

This instruction sheet explains how to install a 24V to 12V Converter

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
VOLVO BUS 97002016 to 2018

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