Recall 23V713 affects 47 2024 Mack Lr trucks for loose steering-assist fasteners. Do not drive. Free repair at any franchised Mack dealer.
A separated power steering assist cylinder can cause loss of vehicle control and increase crash risk. Do not drive the vehicle, including short trips, until the repair is complete. Heavy steering effort or loose steering gear hardware found during a pre trip inspection is a warning sign. Repair is free at any franchised Mack dealer.
Mack is recalling 47 2024 Lr vehicles because loose or missing fasteners can let the power steering assist cylinder separate from the steering arm, causing a loss of vehicle control and increasing crash risk. Do not drive the vehicle until a Mack dealer completes the free repair.
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What's wrong?
The power steering assist cylinder on the 2024 Mack Lr helps the driver turn the truck with less effort. It connects into the steering linkage at the steering arm, where its fasteners need to stay tight so the assist force is transferred cleanly into the steering system.
On included Lr trucks, the fasteners at that joint were not controlled correctly during assembly. The nut on the power steering assist cylinder joint was under-torqued, and the cotter pin that helps keep the castellated nut in place was not installed on some trucks. If that joint loosens, the steering assist cylinder no longer holds the steering arm with the force the system needs, and steering effort increases.
The driver can notice excessive effort at the steering wheel before the joint fully loosens. A missing cotter pin or loosening nut can also be found during a pre-trip inspection.
Who's affected?
| 2024 Mack Lr | steering system |
|---|---|
| Units affected | 47 |
| Field incidents | NHTSA has logged no field incidents to date. |
A matching year and model does not guarantee inclusion. Check your VIN to confirm whether your specific truck is included.
What's the safety risk?
A separated power steering assist cylinder can cause loss of vehicle control and increase crash risk. Do not drive the vehicle, including short trips, until the repair is complete. Heavy steering effort or loose steering gear hardware found during a pre trip inspection is a warning sign. Repair is free at any franchised Mack dealer.
What should I do?
- Check your VIN to confirm your 2024 Mack Lr is included in this recall.
- Do not drive the truck until the steering repair is complete.
- Arrange a tow if the truck has to be moved to the dealer; do not drive it there yourself.
- Contact a franchised Mack dealer to schedule the free inspection, steering gear fastener tightening, and cotter-pin installation that secures the power steering assist cylinder.
- Bring the recall notice if Mack mailed one. If not, reference recall number 23V713 when you call.
What happens at the repair
Do not drive the vehicle until the recall repair is complete. At the dealer, a Mack technician inspects the fasteners connecting the power steering assist cylinder to the steering arm, tightens them as needed, and installs a new cotter pin. Parts and labor are covered under the recall. If you already paid out of pocket for this steering gear fastener repair before the recall notice, Mack's standard reimbursement plan covers documented expenses. Bring repair paperwork to the service desk or contact Mack customer service to start the claim.
| Reimbursement | Reimbursement available |
|---|
Timeline
| October 24, 2023 | NHTSA published the recall |
|---|---|
| October 26, 2023 | Owner notification mailed |
| October 31, 2023 | Dealer notification began |
| October 31, 2023 | Dealer notification ended |
| December 15, 2023 | Interim owner notification (was planned for this date) |
Frequently asked questions
What is recall 23V713?
Recall 23V713 covers 47 2024 Mack Lr vehicles with steering fasteners that are loose or missing. The power steering assist cylinder can separate from the steering arm, causing loss of vehicle control. Do not drive the vehicle until a Mack dealer completes the free repair.
What should I do if my 2024 Mack Lr is on this recall?
Check your VIN to confirm your specific vehicle is included in recall 23V713. If it is included, do not drive it. Contact a franchised Mack dealer and ask about towing or mobile service before the dealer inspects and tightens the steering gear fasteners.
Is the recall repair free?
Yes. Federal recall law requires the manufacturer to repair the defect at no cost. Mack dealers will inspect and tighten the steering gear fasteners and install a new cotter pin free of charge.
What does do not drive mean for this Mack recall?
Do not drive the vehicle until the dealer completes the repair. The steering assist cylinder can separate from the steering arm, causing loss of vehicle control. If the vehicle has to move, call Mack customer service at 1-800-866-1177 or a franchised Mack dealer and ask about towing.
More information
| NHTSA campaign page | nhtsa.gov/vehicle-recalls/23V713000 |
|---|---|
| Mack customer service | 1-800-866-1177 |
| NHTSA recall # | 23V713 |
| NHTSA recall # (full) | 23V713000 |
Source documents
-
Download Quarterly Report (PDF) - Download Recall Report (PDF)
- Download Owner Notification Letter (PDF)
- Download Owner Notice (PDF)
- Download Recall Acknowledgement (PDF)
- Download Recall Investigation Document (PDF) (PDF)
This article is generated from NHTSA's primary recall filings and reviewed against the source on May 20, 2026. RecallNotify does not paraphrase NHTSA's consequence language; that text is reproduced as written above. Editorial standards →