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Service bulletin WB15-50

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 id10131459
Published by NHTSA2018-04-02
Manufacturer's numberWB15-50
Manufacturer's date2015-12-09
NHTSA componentEQUIPMENT:OTHER:LABELS

NHTSA's summary

On the vehicles affected by this bulletin the rear junction box decal located in the right engine compartment is displaying incorrect information regarding the R34 relay voltage. Specifically, the R34 relay should be identified as a 24 volt relay instead of a 12 volt relay. Consequently, all affected vehicles must have a small decal displaying the correct information applied over the rear junction box decal R34 relay description.

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

Equipment and accessories, Labels and manuals

Vehicles listed
PREVOST WE2011 to 2013
PREVOST X32012 to 2013
PREVOST X3-452010 to 2015
PREVOST X3VIP2014 to 2015

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