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Service bulletin FSB 375-012

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 id10082784
Published by NHTSA2016-10-18
Manufacturer's numberFSB 375-012
Manufacturer's date2014-08-19
NHTSA componentELECTRICAL SYSTEM:12V/24V/48V BATTERY

NHTSA's summary

BATTERY PROTECTION SYSTEM (LVD) RELAY ON CERTAIN MACK TRUCKS BUILT FROM 01/01/2010 TO 06/13/2014 WITH THE LIFEGUARD BATTERY PROTECTION SYSTEM (LVD), THE LVD RELAY MAY NOT TURN THE LOADS BACK ON WHEN THE “HIGH” VOLTAGE THRESHOLD IS MET. THIS IS DUE TO AN ASSEMBLY ERROR AT THE SUPPLIER.

The document

No address for NHTSA's copy can be built for this communication. Ask the dealer for it by the manufacturer's number.

Components

Electrical system, 12-volt battery

Vehicles listed
MACK CHU2011 to 2015
MACK CXU2011 to 2015

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