WenmarOpen by Wenmar Pro

Service bulletin M1540

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 id10203244
Published by NHTSA2021-11-06
Manufacturer's numberM1540
Manufacturer's date2021-10-21
NHTSA componentELECTRICAL SYSTEM; EQUIPMENT

NHTSA's summary

SERVICE BULLETIN M1540: 2021 PAN AMERICA ECM UPDATE. PUPORSE: This service bulletin is to inform dealers of an Electronic Control Module (ECM) update that is available on Digital Technician II (DT II). This update is to address a no crank, no start condition. Bikes exhibiting this condition will have no reaction when the starter button is pushed with Ignition ON. It may be seen that after turning the Ignition OFF and waiting 30 or more seconds then turning the Ignition ON again the starter button will then operate as normal.

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 RA12502021
HARLEY-DAVIDSON RA1250S2021

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