# Service bulletin 46\-003

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: 10245191
- Published by NHTSA: 2023\-11\-10
- Manufacturer's number: 46\-003
- Manufacturer's date: 2023\-10\-31
- NHTSA component: ELECTRONIC STABILITY CONTROL:AUTOMATIC \(ASC\)

## NHTSA's summary

A software fix for model 520EV that are not equipped with ESP \(Stability Control\) is now available. The currently available soft ware, part number:SCM\_1p5\_BC\_R5p00\_003, will address issues caused by software version R5.00\_002 that affect Peterbilt Model 520EV. The software update will correct the following issues: 1.\) Power gauge displays axle RPM instead of power draw, 2.\) Air conditioning compressor is inoperative below 10 mph \(16 kmh\) and over 40 mph \(65 kmh\), 3.\) Low air and low coolant audible alarms \(buzzers\) are inoperative below 10 mph \(16 kmh\), and 4.\) \(520EV Only\) Does not charge without ignition in on position.

## The document

- [NHTSA's copy of the document (PDF)](https://static.nhtsa.gov/odi/tsbs/2023/MC-10245191-0001.pdf)
- [If that address does not open, try this one](https://static.nhtsa.gov/odi/tsbs/2023/MC-10245191-9999.pdf)

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

## Components

Driver assistance

## Vehicles listed

- 2021 to 2024 PETERBILT 520

## Recalls for the same vehicles and component

- [20V739000](/recalls/nhtsa/20V739000.md), 2020-11-25: ELECTRONIC STABILITY CONTROL \(ESC\)

## Other bulletins for the same vehicles and component

- [24KWL/PBL](/bulletins/11036291.md), 2026-08-20, Service bulletin: FORWARD COLLISION AVOIDANCE: WARNINGS. The verbiage in the Introduction section has been updated.
- [24PBL](/bulletins/11013775.md), 2025-02-05, Service bulletin: FORWARD COLLISION AVOIDANCE: WARNINGS; UNKNOWN OR OTHER; ELECTRICAL SYSTEM. Safety Recall Updated software and procedures are now available. Certain Vehicle Model Year 2021\-2025 Peterbilt chassis configured for trailer towing require a software update for the Bendix EC80 ABS ECU. Software update procedures for certain Battery\-Electric Vehicles \(BEV\) and EC80 ABS ECU part numbers are not yet available. This bulletin will be updated when software update procedures are available for these chassis. Safety Recall publish date: 1/10/25

JSON: [/v1/bulletins/10245191](/v1/bulletins/10245191)

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