WenmarOpen by Wenmar Pro

Service bulletin 21112

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 id10201753
Published by NHTSA2021-10-01
Manufacturer's number21112
Manufacturer's date2021-09-22
NHTSA componentELECTRICAL SYSTEM; ENGINE AND ENGINE COOLING; EQUIPMENT

NHTSA's summary

The grid heater relay may stick closed resulting in a battery draw. Only equipped with Cummins ISB engines.

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, Engine, Equipment and accessories

Vehicles listed
INTERNATIONAL DURASTAR2019
INTERNATIONAL MV2019 to 2020

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