# Service bulletin 46\-066

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: 11003067
- Published by NHTSA: 2024\-07\-03
- Manufacturer's number: 46\-066
- Manufacturer's date: 2024\-06\-26
- Campaign id or software version: 46\-066
- NHTSA component: ELECTRICAL SYSTEM

## NHTSA's summary

On certain Peterbilt Model 220EV Battery Electric Vehicles \(BEVs\), timer 2 for the HED® Telematic device may malfunction inside the cab harness. Due to this malfunction, the fuse for the telematic device is being triggered. If fuse has blown, the timer may malfunction.

## The document

- [NHTSA's copy of the document (PDF)](https://static.nhtsa.gov/odi/tsbs/2024/MC-11003067-0001.pdf)
- [If that address does not open, try this one](https://static.nhtsa.gov/odi/tsbs/2024/MC-11003067-9999.pdf)

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

## Components

Electrical system

## Vehicles listed

- 2020 to 2023 PETERBILT 220

## Recalls for the same vehicles and component

- [25V182000](/recalls/nhtsa/25V182000.md), 2025-03-24: ELECTRICAL SYSTEM:PROPULSION SYSTEM
- [21V609000](/recalls/nhtsa/21V609000.md), 2021-08-04: ELECTRICAL SYSTEM:PROPULSION SYSTEM; ENGINE

## Other bulletins for the same vehicles and component

- [46\-025](/bulletins/11037545.md), 2026-09-29, Service bulletin: UNKNOWN OR OTHER; ELECTRICAL SYSTEM. The bulletin has been updated to include vehicles equipped with 141 kWh batteries.
- [46\-022](/bulletins/11029642.md), 2026-03-05, Service campaign: ELECTRICAL SYSTEM. Certain Model 220, K270, and K370 BEV chassis are broadcasting incorrect VINs to PACCAR Solutions.
- [46\-025](/bulletins/11029641.md), 2026-03-05, Service campaign: ELECTRICAL SYSTEM. Software updates are available for certain Peterbilt Model 220 BEVs that experience battery pack cell imbalances.
- [98\-030](/bulletins/11019172.md), 2025-06-05, Service bulletin: ELECTRICAL SYSTEM. 5/29/2025: A new Ethernet Multiplexed Architecture \(EMUX\) Service Tool Kit service manual \(SM034\-022\) has been released to provide general use information. The new EMUX Service Tool Kit improves cab \& chassis electrical troubleshooting efficiency, while reducing risk of component damage. 4/29/2025: The Ethernet Multiplexed Architecture \(EMUX\) Service Tool Kit and individual kit components are now available to order. Dealers that have received their first kit may order an additional kit. The EMUX Service Tool Kit Part number has been updated to match OEM drawings \(P74\-1045\-001\). Individual kit component part numbers can be found in the Reference Bill of Materials sheet. The new EMUX Service Tool Kit improves cab \& chassis electrical troubleshooting efficiency, while reducing risk of component damage. Information Only New diagnostic tool is required to support PACCAR Ethernet Multiplexed Architecture \(EMUX\). The EMUX Service Tool Kit will help improve cab \& chassis electrical troubleshooting efficiency, while reducing the risk of component damage.
- [98\-030](/bulletins/11008569.md), 2024-10-05, Service campaign: ELECTRICAL SYSTEM. Information Only New diagnostic tool is required to support PACCAR Ethernet Multiplexed Architecture \(EMUX\). The EMUX Service Tool Kit will help improve cab \& chassis electrical troubleshooting efficiency, while reducing the risk of component damage.
- [46\-001 HVAC Update](/bulletins/11007667.md), 2024-09-10, Other: ELECTRICAL SYSTEM. BEV Phase 2 tools have been added to the BEV required tools lists.
- [32\-022](/bulletins/11003064.md), 2024-07-03, Service bulletin: ELECTRICAL SYSTEM. 220EV Battery Electric Vehicles \(BEV\) rely on 12V batteries that act as a buffer when the converter cannot meet peak 12V demand, causing additional stress to the batteries. This can lead to depleted 12V batteries.
- [51\-016](/bulletins/11001048.md), 2024-06-05, Service bulletin: ELECTRICAL SYSTEM. Information Only Dealers/body builders installing lift gates onto Peterbilt Model 220EV BEV chassis must use 24\-volt lift gate systems 12\-volt lift gate systems are not compatible with vehicle electrical systems. Installation of a 12V lift gate on the 24V system could result in the following: \* Accelerated wear on the 12V batteries. \* Excessive current load on 12V system wiring. \* Lights may dim when lift gate is in operation. \* Lift gate may operate more slowly..
- [34\-090](/bulletins/10208756.md), 2022-03-04, Service bulletin: EQUIPMENT; EXTERIOR LIGHTING; ELECTRICAL SYSTEM. A frame mounted left\-hand marker light bracket interferes with the rear fuel tank fill location. A redesigned bracket can be purchased that relocates the marker bracket to the front fuel tank bracket to eliminate interference.
- [32\-015](/bulletins/10177021.md), 2020-07-03, Service bulletin: ELECTRICAL SYSTEM. Information Only: This bulletin provides dealers with a battery warranty quick reference guide to ensure the appropriate tests for battery warranty are performed in order to prevent battery warranty claims filed with incorrect or incomplete information.

JSON: [/v1/bulletins/11003067](/v1/bulletins/11003067)

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