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Service bulletin SC-23-109

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 id11007774
Published by NHTSA2024-09-13
Manufacturer's numberSC-23-109
Manufacturer's date2023-08-17
Campaign id or software versionSC-23-109
NHTSA componentELECTRICAL SYSTEM; POWER TRAIN; FUEL/PROPULSION SYSTEM

NHTSA's summary

The procedure describes the process of updating the vehicles software along with a hardware change to improve the vehicles experience and diagnostics on ZX5.A02 buses.

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, Transmission and driveline

Vehicles listed
PROTERRA ZX52022 to 2023

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