NHTSA campaign 23V310000 · Mack campaign SC443
Mack Recall 23V-310: Inoperative Horn Button
NHTSA recall 23V310000 (Mack campaign SC443) was reported by Mack Trucks, Inc. on May 2, 2023, with 5 vehicles potentially affected (per NHTSA). NHTSA's record lists the Mack LR for the 2024 model year. Owners were notified on June 20, 2023, per NHTSA.
Updated daily from NHTSA's recall files
Is my vehicle included?
This page lists, by model year, the vehicles NHTSA's recall record names for campaign 23V310000 in the model years try.vin imports (1995 and later); NHTSA's own record can list more. A model year on the list doesn't mean every vehicle of that year is included, and some may already have been repaired.
To see whether a specific vehicle is included and still needs the repair, enter its VIN at nhtsa.gov/recalls.
Free VIN check: decode a VIN to see its year, make and model.
Key facts
- NHTSA campaign
- 23V310000 (also written 23V-310 or 23V310)
- Filed by
- Mack Trucks, Inc.
- Mack campaign number
- SC443
- Report received
- Potentially affected
- 5 vehicles (per NHTSA)
- Component
- Electrical System — Horn
- Owners notified
Repair completion: 100% (latest rate the manufacturer reported to NHTSA; dataset updated October 21, 2026)
NHTSA cautions against comparing completion rates across recalls or manufacturers. How try.vin reads them.
Vehicles listed for this recall
NHTSA's recall record lists these vehicles for recall 23V310000. try.vin imports model years 1995 and later, so NHTSA's own list can be longer. Model years with a try.vin recall page link to it. Build dates are NHTSA's range for a model year (per NHTSA); a vehicle built in that range is not necessarily included.
Mack
Mack LR
NHTSA's recall notice
As NHTSA's recall record states it for campaign 23V310000.
Defect description
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.
Safety consequence
A vehicle with an inoperative horn cannot alert other drivers, increasing the risk of a crash.
Manufacturer 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.
Sources
Official NHTSA notice for recall 23V310000
Campaign details come from NHTSA's recall files, which try.vin imports once a day. The plain-language subject and the completion rate come from the U.S. Department of Transportation's Recalls Data dataset. How try.vin reads recall data.