# NHTSA recall 23V310000

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: NHTSA \(United States\)
- Campaign number: 23V310000
- Manufacturer's number: SC443
- Manufacturer: Mack Trucks, Inc.
- Reported: 2023\-05\-02
- Owners notified: 2023\-06\-20
- Component: ELECTRICAL SYSTEM:HORN
- Units potentially affected: 5
- Part numbers: 24078162

## What is wrong

Mack Trucks, Inc. \(Mack\) is recalling certain 2024 LR electric garbage trucks, equipped with electric horns.  The circuit connecting the horn button to the horn is missing, making the horn inoperative.


## What can happen

A vehicle with an inoperative horn cannot alert other drivers, increasing the risk of a crash.


## The remedy

Dealers will add the necessary circuits to connect the horn button to the horn, free of charge.  Owner notification letters were mailed June 20, 2023.  Owners may contact Mack customer service at 1\-800\-866\-1177.  Mack's number for this recall is SC443.


## Notes

Owners may also contact the National Highway Traffic Safety Administration Vehicle Safety Hotline at 1\-888\-327\-4236 \(TTY 1\-800\-424\-9153\), or go to www.nhtsa.gov.


## Remedy progress the manufacturer reported

- Report: Quarterly report 8, for 2025 quarter 1
- Filed with NHTSA: 2025\-04\-14
- Vehicles in the campaign: 5
- Reported remedied: 5 \(100%\)
- Reported unreachable: 0
- Reported removed: 0

These are the manufacturer's totals for the whole campaign at the end of 2025 quarter 1, as filed with NHTSA. They do not say whether one vehicle has been remedied: check the VIN with the official lookups. The reports are from data as of 2026\-10\-19.

## Vehicles this campaign lists

- [2024 MACK LR](/makes/mack/lr/2024/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 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
- [S0310 202409](/bulletins/11008392.md), 2024-10-04, Service campaign
- [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)

JSON: [/v1/recalls/nhtsa/23V310000](/v1/recalls/nhtsa/23V310000)

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