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Service bulletin 1HD-L4F5Q-11

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 id10147405
Published by NHTSA2018-11-13
Manufacturer's number1HD-L4F5Q-11
Manufacturer's date2018-10-01
NHTSA componentENGINE AND ENGINE COOLING

NHTSA's summary

SERVICE BULLETIN M1436: 2017 ENGINE IDLE TEMPERATURE MANAGEMENT SYSTEM (EITMS). REVISION - Updated Title. Purpose: Inform dealers of the operational details of the EITMS (Engine idle temperature management system) used on all 2017 Touring, Police, Trike and CVO Touring vehicles. Additionally this bulletin will bring awareness to a calibration change that was made to this same population of vehicles produced after early October 2016.

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

Engine

Vehicles listed
HARLEY-DAVIDSON TOURING2017
HARLEY-DAVIDSON TRIKE2017

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