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Service bulletin MA-WI-001

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 id10191683
Published by NHTSA2021-05-05
Manufacturer's numberMA-WI-001
Manufacturer's date2021-04-09
NHTSA componentELECTRICAL SYSTEM; EQUIPMENT:ELECTRICAL:INFOTAINMENT:SOFTWARE

NHTSA's summary

The current M/MA software was designed with the pump output for wire 40 and wire 41 backwards. Because of this wiring harness design, the gear pump and vane pump configurations cannot be controlled in the same manner. Software version 8.1.18 or later corrects the programming issue.

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
MCNEILUS MANUAL/ AUTO SIDE LOADER2019 to 2021

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