Recall 23V605 affects 395 2024 Mack Md vehicles for loose steering gear fasteners. Repair is free at any franchised Mack dealer.
Mack is recalling 395 2024 Md vehicles under recall 23V605 because the steering gear fasteners were not properly tightened on affected vehicles. Loose fasteners can lead to loss of vehicle control and increase crash risk, and Mack dealers will complete the recall repair free of charge.
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What's wrong?
The steering gear on the 2024 Mack Md is the part that turns driver input at the steering wheel into movement at the front wheels. It is held to the truck by large fasteners, including the M20*140 hexagon screw listed for this recall. Those fasteners need the correct clamp force so the gear stays fixed while the truck steers and handles loads.
On affected trucks, the assembly torque tool was improperly calibrated at the plant. That means the steering gear fasteners were tightened below specification. A loose fastener loses the clamping force it is supposed to provide, leaving the steering gear less securely mounted than designed.
An owner or technician can spot loose fasteners during a visual inspection. The driver can also notice alignment that feels off, or steering and handling that do not feel normal. Those are the warning signs Mack identified before failure.
Who's affected?
| 2024 Mack Md | steering system |
|---|---|
| Units affected | 395 |
| Field incidents | NHTSA has logged no field incidents to date. |
Not every 2024 Mack Md truck is on the list. Check your VIN to confirm whether your specific truck is included.
What's the safety risk?
Loose steering gear fasteners can affect steering control and increase the risk of a crash. A visual inspection can find loose fasteners, and unusual steering, alignment, or handling feel needs prompt dealer attention. Schedule the repair soon and drive cautiously until it is complete. Repair is free at any franchised Mack dealer.
What should I do?
- Check your VIN to confirm your 2024 Mack Md is included in this recall.
- Contact a franchised Mack dealer to schedule the free steering gear fastener tightening that secures the loose steering gear.
- Bring the recall notice if Mack has mailed one. If not, reference recall number 23V605 when you call.
- Avoid unnecessary trips until the steering gear fasteners are tightened.
What happens at the repair
At the dealer, a Mack technician tightens the steering gear fasteners covered by recall 23V605. The recall repair is free, and parts and labor are covered. If you already paid out of pocket for steering gear fastener work tied to this recall, Mack's manufacturer's reimbursement plan covers documented expenses. Bring repair invoices and payment records to the service desk so the claim can be reviewed through that plan.
| Reimbursement | Reimbursement available |
|---|
Timeline
| August 30, 2023 | NHTSA published the recall |
|---|---|
| September 4, 2023 | Dealer notification began |
| September 4, 2023 | Dealer notification ended |
| October 4, 2023 | Owner notification mailed |
| October 23, 2023 | VIN-searchable in NHTSA's database — Check your VIN to see whether this recall applies to your specific vehicle. |
| October 23, 2023 | Interim owner notification (was planned for this date) |
Frequently asked questions
What is recall 23V605?
Recall 23V605 covers 395 2024 Mack Md vehicles with steering gear fasteners that were not properly tightened. Loose fasteners can lead to loss of vehicle control and increased crash risk. Mack dealers will tighten the steering gear fasteners for free.
What should I do if my 2024 Mack Md is on this recall?
Check your VIN to confirm your specific vehicle is included in recall 23V605. If it is, contact a franchised Mack dealer to schedule the steering gear fastener repair. Reference Mack recall number SC0449 when you call. The dealer repair is free.
Is the recall repair free?
Yes. Federal recall law requires manufacturers to repair safety defects at no cost. Mack dealers will tighten the steering gear fasteners free of charge, including parts and labor, at any franchised Mack dealer.
What is the safety risk in recall 23V605?
The safety risk is loss of vehicle control. The steering gear helps the driver control the vehicle's direction, and loose steering gear fasteners can interfere with that control. If your VIN is included, arrange the free repair with a Mack dealer.
More information
| NHTSA campaign page | nhtsa.gov/vehicle-recalls/23V605000 |
|---|---|
| Mack customer service | 1-800-866-1177 |
| NHTSA recall # | 23V605 |
| NHTSA recall # (full) | 23V605000 |
Source documents
-
Download Quarterly Report (PDF) - Download Recall Investigation Document (PDF) (PDF)
- Download Owner Notification Letter (PDF)
- Download Recall Report (PDF)
- Download Recall Acknowledgement (PDF)
- Download Owner Notice (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 →