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Service bulletin BS4051ER2

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 id10115684
Published by NHTSA2017-08-16
Manufacturer's numberBS4051ER2
Manufacturer's date2017-07-20
NHTSA componentPARKING BRAKE

NHTSA's summary

Interlock brake is activated when the B-bus network is disconnected or lost.

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

Brakes, Parking brake

Vehicles listed
NOVA BUS LFS2010 to 2014
NOVA BUS LFS2015, 2016, 2017
NOVA BUS LFS ARTIC2013 to 2014
NOVA BUS LFS ARTIC2016, 2017 (the catalog's model; the bulletin names a series or trim of it)

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

Other bulletins for the same vehicles and component
LI4114E2017-09-14. Service bulletin. Articulation hydraulic cylinder pin is required to be maintained at W2 (60,000mi,100,000Km) maintenance of the articulation system to ease removal at a later time.