# Service bulletin SC\-20\-091

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: 10178214
- Published by NHTSA: 2020\-08\-14
- Manufacturer's number: SC\-20\-091
- Manufacturer's date: 2020\-07\-15
- NHTSA component: ELECTRICAL SYSTEM:SOFTWARE

## NHTSA's summary

The reason for this software update is to update various controllers to the latest state of the art software. This will improve vehicle up\-time, reduce driver interactions with the doors, and improve diagnostic fault handling. All the included Proterra Catalyst 800V vehicles require a change to the software/configuration for the following items: \- Body Controller \- Vehicle Controller \- HVAC Inverter

## The document

- [NHTSA's copy of the document (PDF)](https://static.nhtsa.gov/odi/tsbs/2020/MC-10178214-0001.pdf)
- [If that address does not open, try this one](https://static.nhtsa.gov/odi/tsbs/2020/MC-10178214-9999.pdf)

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

## Components

Electrical system, Software

## Vehicles listed

- 2019 to 2020 PROTERRA CATALYST

JSON: [/v1/bulletins/10178214](/v1/bulletins/10178214)

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