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Service bulletin MC000521

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 id10201165
Published by NHTSA2021-09-07
Manufacturer's numberMC000521
Manufacturer's date2021-07-23
NHTSA componentELECTRICAL SYSTEM

NHTSA's summary

One of the following situations can occur when connecting to BN2000 motorcycles: 1. The installed control units cannot be found when reading out with ISTA. 2. Control units initially communicate after connecting to the vehicle, but communication later stops.

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

Vehicles listed
BMW BMW MOTORCYCLE

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