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Service bulletin LI1643ER1

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 id10109978
Published by NHTSA2017-08-03
Manufacturer's numberLI1643ER1
Manufacturer's date2014-12-04
NHTSA componentEQUIPMENT ADAPTIVE/MOBILITY; UNKNOWN OR OTHER

NHTSA's summary

The crystallization of urea creates leaks and venting odors, and dirt may enter the reservoir.

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

Vehicles listed
NOVA BUS LFS2010 to 2011
NOVA BUS LFS ARTIC2010

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