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Service bulletin M1515

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 id10177092
Published by NHTSA2020-07-07
Manufacturer's numberM1515
Manufacturer's date2020-06-17
NHTSA componentELECTRICAL SYSTEM; EQUIPMENT

NHTSA's summary

SERVICE BULLETIN M1515: TCU DISCONTINUED ON SELECTED PLATFORMS – RUNNING CHANGE. PURPOSE: Revision. To inform dealers that the Telematic Control Unit (TCU) on some platforms are being discontinued as of: 1) May 28, 2020 for configurations: DOM, CAL, CAN, HDI, EN manufactured in United States; 2) May 12, 2020 for configurations: EN2, HD4 manufactured in Thailand. These vehicles will not be compatible with the H-D Connect service and Digital Technician II (DT II) will not display a TCU as an available module.

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, Equipment and accessories

Vehicles listed
HARLEY-DAVIDSON FLHP2020
HARLEY-DAVIDSON FLHR2020
HARLEY-DAVIDSON FLHRXS2020
HARLEY-DAVIDSON FLHT2020
HARLEY-DAVIDSON FLHTCUTG2020
HARLEY-DAVIDSON FLHTCUTGSE2020
HARLEY-DAVIDSON FLHTK2020
HARLEY-DAVIDSON FLHTK SHRINE2020
HARLEY-DAVIDSON FLHTKSE2020
HARLEY-DAVIDSON FLHTP2020
HARLEY-DAVIDSON FLHX2020
HARLEY-DAVIDSON FLHXS2020
HARLEY-DAVIDSON FLHXSE2020
HARLEY-DAVIDSON FLRT2020
HARLEY-DAVIDSON FLTRK2020
HARLEY-DAVIDSON FLTRX2020
HARLEY-DAVIDSON FLTRXS2020
HARLEY-DAVIDSON FLTRXSE2020

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