# Service bulletin SB 21\-350

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.

- Type: Service bulletin
- NHTSA id: 10189140
- Published by NHTSA: 2021\-03\-17
- Manufacturer's number: SB 21\-350
- Manufacturer's date: 2021\-03\-16
- NHTSA component: EQUIPMENT

## NHTSA's summary

Pre\-2021 Half/Pack® and Pre\-2021 Half/Pack® \(featuring Odyssey® Controls\): Cortex Controller™ Required Firmware and Program Update This Service Bulletin provides instructions on how to perform the required update of the Cortex Controller™ \(CR0233\) on Heil units listed below. This update improves data reliability for Connected Collections™ and corrects a boot up problem that some Cortex Controllers experience in cold weather.

## The document

- [NHTSA's copy of the document (PDF)](https://static.nhtsa.gov/odi/tsbs/2021/MC-10189140-0001.pdf)
- [If that address does not open, try this one](https://static.nhtsa.gov/odi/tsbs/2021/MC-10189140-9999.pdf)

The document is the manufacturer's. This site does not hold it.

## Components

Equipment and accessories

## Vehicles listed

- HEIL HEIL

JSON: [/v1/bulletins/10189140](/v1/bulletins/10189140)

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