WenmarOpen by Wenmar Pro

Service bulletin IK-1200547

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 id10036669
Published by NHTSA2011-04-08
Manufacturer's numberIK-1200547
Manufacturer's date2010-12-23
NHTSA componentENGINE AND ENGINE COOLING:COOLING SYSTEM:FAN; ENGINE AND ENGINE COOLING:ENGINE:DIESEL

NHTSA's summary

NAVISTAR: THE 2010 PROSTAR AND FANSTAR WITH A 2010 MAXXFORCE EMISSIONS AND VARIABLE SPEED FAN DRIVE CAN HAVE A SITUATION WHERE THE FAN IS ALWAYS ENGAGED WITH CODE 12THX (HORTON VISCOUS FAN DRIVE). ENGINE WARNING LIGHT, FAULT CODES, FAN DRIVE REMAINS ENGAGED. NO MODEL YEARS LISTED. *PE *RM

The document

No address for NHTSA's copy can be built for this communication. Ask the dealer for it by the manufacturer's number.

Components

Engine, Cooling fan, Cooling system

Vehicles listed
INTERNATIONAL PROSTAR2011
INTL TRANSTAR2007

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