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Service bulletin ITS61123

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 id11007427
Published by NHTSA2024-09-07
Manufacturer's numberITS61123
Manufacturer's date2024-08-15
NHTSA componentELECTRICAL SYSTEM; FUEL/PROPULSION SYSTEM

NHTSA's summary

Instruction to Service for updating the battery program on certain ELFA3 buses for Improved BMS response to overcharging and other functional safety mechanisms, more robust detection of failure modes through DTCs, improving Battery Data Recorder (BDR) capabilities, streamlined flashing processes, and logic improvements for better integration with application.

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, Fuel system

Vehicles listed
NEW FLYER XE352021 to 2024
NEW FLYER XE402021 to 2024
NEW FLYER XE602023 to 2024
NEW FLYER XHE402023 to 2024

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