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 |
| 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.
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.
| 2024 MACK LR |
|---|
A vehicle with no link is not in this site's catalog, which covers cars, multipurpose vehicles and trucks by model year. The campaign is from data as of 2026-10-19.
Bulletins for the same vehicles and component
| CBR 2712-7 032026 | 2026-04-02. Service bulletin. CBR - No Start Condition After Over the Air Programing. |
|---|---|
| CBR 2171-11 202511 | 2025-12-03. Service bulletin. CBR - Mack Temperature Sensor Troubleshooting Guide |
| CBR 2172-5 082025 | 2025-09-02. Service bulletin. CBR - When an OTA (Over-The-Air) job starts to program the VECU blocks the starter relay out, if the job ends in a Critical failure, the vehicle will remain in Safe State. |
| CBR 407 072025 | 2025-08-04. Service bulletin. CBR - To correct the MID136 SID 66 FMI 7 fault code the latest Bendix VCP file will need to downloaded. |
| CBR 2488 072025 | 2025-08-04. Service bulletin. CBR - A significant GPS reporting issue is affecting fleet operations, with trucks maintaining back-office communication but failing to transmit GPS location data. |
| CBR 901-5 202505 | 2025-06-02. Service bulletin. Remote Control Central Door Lock, Programming; Key Fob Cannot Be Programmed Or Does Not Work After Programming - Model Year 2018 And Newer |
| S0310 202409 | 2024-10-04. Service campaign. Service Campaign: TGW3 Non-Communication |
| CBR-570 202409 | 2024-10-03. Service bulletin. CBR: US17 GHG Common Rail Fuel System Component Electrical Faults - Model Year 2017 To 2024 |
| CBR-471 202409 | 2024-10-03. Service bulletin. CBR: The procedure to eliminate the Mack Chassis "Air Restriction Light On" seen in the cluster is to confirm that the parameter YYT is set to "Enable" with Premium Tech Tool. |
| CBR-2391 202408 | 2024-09-04. Service bulletin. CBR: Diagnostic Trouble Code (DTC) U010187- Lost Communication With TECU |
A bulletin is the manufacturer's note to its dealers. It is not part of this recall.