# Transport Canada recall 2023021

A recall listed here may apply to a vehicle of this year, make and model. Only the manufacturer can say whether it applies to one vehicle: check the VIN with the official lookups.

- Published by: Transport Canada \(Canada\)
- Campaign number: 2023021
- Manufacturer's number: SC0440
- Reported: 2023\-01\-24
- Component: Electrical
- Notification type: Safety Mfr
- Units potentially affected: 5

## What is wrong

Issue:

On a small number of LR Electric models, a relay for the coolant heater could fail. If this happens, the heater could stay energized when there is no coolant flow or a low coolant level.

Safety Risk:

A coolant heater that stays energized could create the risk of a fire.

Corrective Actions:

Mack will notify owners by mail and instruct you to take your truck to a dealership to update the hybrid powertrain control unit and instrument cluster software. The dealer will also install replacement relays.


## Vehicles this campaign lists

- [2022 MACK LR](/makes/mack/lr/2022/recalls.md)

## Bulletins for the same vehicles and component

A bulletin is the manufacturer's note to its dealers. It is not part of this recall.

- [CBR 2712\-7 032026](/bulletins/11030579.md), 2026-04-02, Service bulletin
- [CBR 2128\-7 202601](/bulletins/11028033.md), 2026-02-03, Service bulletin
- [CBR 2171\-11 202511](/bulletins/11026025.md), 2025-12-03, Service bulletin
- [CBR 2172\-5 082025](/bulletins/11022289.md), 2025-09-02, Service bulletin
- [CBR 407 072025](/bulletins/11021333.md), 2025-08-04, Service bulletin
- [CBR 2488 072025](/bulletins/11021332.md), 2025-08-04, Service bulletin
- [CBR 901\-5 202505](/bulletins/11018811.md), 2025-06-02, Service bulletin
- [CBR\-570 202409](/bulletins/11008374.md), 2024-10-03, Service bulletin
- [CBR\-471 202409](/bulletins/11008368.md), 2024-10-03, Service bulletin
- [CBR\-2391 202408](/bulletins/11006927.md), 2024-09-04, Service bulletin

## Check a VIN

- [NHTSA recall lookup by VIN, United States](https://www.nhtsa.gov/recalls)
- [Transport Canada recall search, Canada](https://wwwapps.tc.gc.ca/Saf-Sec-Sur/7/VRDB-BDRV/search-recherche/menu.aspx?lang=eng)

Contains information licensed under the Open Government Licence – Canada.

JSON: [/v1/recalls/tc/2023021](/v1/recalls/tc/2023021)

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