Mack Lr, model year 2024. Filed by Mack Trucks, Inc. and reported to NHTSA on 2 May 2023. 5 vehicles potentially affected.
What the notice says 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.
Is your vehicle included? Check with your VIN at NHTSA, or ask a dealer. This page is an independent copy of the notice, kept so you can see what changed after it was published. It is not the authority, and the authority’s own text is the one to act on.
Mack's own number for this recall: SC443. That is the number on the owner letter and on the dealer paperwork. 23V310 is the number NHTSA gave the same campaign, and the number this page is filed under. They are one recall, written two ways.
What owners ask about this recall
- Which vehicles does recall 23V310 cover?
- Mack LR, model year 2024.
- What is wrong with them?
- 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 if it is not put right?
- A vehicle with an inoperative horn cannot alert other drivers, increasing the risk of a crash.
- Is there a fix yet?
- Yes, and it is free. 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.
- What should I do now?
- Check your own vehicle by its VIN with NHTSA, which is the record to act on. Mack calls this recall SC443, which is the number on the owner letter and the dealer paperwork.
Answered from the register this site holds. NHTSA is the record to act on.
What the authority says can happen if this is not fixed: “A vehicle with an inoperative horn cannot alert other drivers, increasing the risk of a crash.”
affected
in the notice
caught
| Campaign | 23V310 |
|---|---|
| Filed by | Mack Trucks, Inc. |
| System at fault | Electrical System:Horn |
| Reported to NHTSA | 2 May 2023 |
| Model years | 2024-2024 |
| Vehicles named | MACK LR |
What the notice says today
The consequence
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.
What it said before
This campaign is in the register but not yet in the dated wording archive, so we cannot yet say whether its text has moved. It enters the archive on the next pass.
This is one of 1,836 notices in the record whose component field names electrical system. Across that group the median wait before owners were written to was 41 days.
Last checked . No change has been recorded in the wording.
The models named here, across their whole recall history
How to cite this record
Quoting the wording on this page means quoting a version, so the date belongs in the citation:
CarsMultiverse, recall 23V310, wording as read on 16 September 2026. https://carsmultiverse.com/recall/23v310/
The cross-border matches used on this site are deposited as a citable dataset: doi:10.5281/zenodo.22087136. The recall wording itself is published by the national authority named above and is theirs, not ours.
The recall record and its wording are published by the US National Highway Traffic Safety Administration and are US Government public domain. The dated archive, the comparison and any before-and-after above are CarsMultiverse. How fresh every engine behind this page is, is public on the status page. To check a specific vehicle, use NHTSA’s own VIN lookup.
Other Mack notices we hold
- 26V515: 2027 Anthem AN (4) and Pioneer PR (4)
- 26V509: 2025 TerraPro trucks
- 26V351: 2026 Anthem (AN), 2026-2027 Pioneer PR (4), Pinnacle (PI/PN), Granite (GR), and 2027 Anthem AN (4)
- 26V261: 2025-2027 Pioneer (4) and 2026-2027 Anthem (4)
- 26V207: 2025-2027 Pioneer (4) and 2027 Anthem (4) trailers
- 26V139: 2022-2027 TerraPro trucks
- 26E055: Grote replacement marker lights with part number 78513681
- 25V867: 2010-2016 Granite (GU) trucks
All 113 Mack campaigns we hold · Every manufacturer in the record
The fingerprint of this notice
We take a SHA-256 of each of the three blocks of text the authority publishes and keep the first eight characters. As we last read campaign 23V310 on 5 September 2026, they were:
- Defect summary
0933afa4 - Consequence
d3338070 - Remedy
210b953f
We first read this notice on 21 August 2026. It has not moved since. If it ever does, these characters will not match, and the change will be dated here.
The wording we hold for 23V310 · how the whole register is watched
Put this notice on your site
A small badge that links here and names the register's reference. It costs one line of HTML and needs no key.
The badge is free to use. It links to this page and nowhere else, and it never shows advertising.
Owners of these cars
No register publishes what happens after the letter. Owners do: tell us, in two taps.
Anonymous: no account, no cookie, nothing you type is stored beyond these choices. Figures appear once 3 owners have answered, and are published with the record under CC BY 4.0.