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Service bulletin FSB 284-046

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 id10083814
Published by NHTSA2016-11-02
Manufacturer's numberFSB 284-046
Manufacturer's date2013-09-16
NHTSA componentELECTRICAL SYSTEM: INSTRUMENT CLUSTER/PANEL

NHTSA's summary

TO IMPROVE THE ACCURACY TO THE INSTRUMENT CLUSTER REPORTED FUEL ECONOMY IT HAS BEEN DETERMINED THAT PARAMETER AIZ (US2010) OR P1ALZ (OBD2013) DEFAULT SETTING MAY NEED ADJUSTMENT.

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, Instrument cluster

Vehicles listed
MACK MACK

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