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Service bulletin SB 21-350 (B)

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 id10196805
Published by NHTSA2021-06-10
Manufacturer's numberSB 21-350 (B)
Manufacturer's date2021-04-14
NHTSA componentELECTRICAL SYSTEM

NHTSA's summary

This Service Bulletin provides instructions on how to perform the required update of the Cortex Controller on all 2018+ Half/Pack, 2018+ Half/Pack (featuring Odyssey Controls, and 2020 LowRider units with a published delivery date before February 1, 2021. This controller update improves data reliability for Connected Collections and corrects a boot up problem that some Cortex Controllers experience in cold weather.

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

Electrical system

Vehicles listed
HEIL AJB9-1040 HYBRID2018 to 2020

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