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Service bulletin PI-502

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 id10029169
Published by NHTSA2009-06-22
Manufacturer's numberPI-502
Manufacturer's date2009-04-01
NHTSA componentELECTRICAL SYSTEM

NHTSA's summary

ARVINMERITOR: A DESIGN ENHANCEMENT TO THE DRIVER CONTROLLED DIFFERENTIAL LOCK (DCDL) ACTUATION POSITION SENSING SWITCH FOR SINGLE REDUCTION DIFFERENTIAL CARRIERS. MODELS MERITOR RS, RT-14X, 16X AND 18X SERIES. MODEL YEARS UNKNOWN. *PE

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

Vehicles listed
MERITOR MERITOR

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