Recall 23V465 affects 204 2023-2024 Mack Lr garbage trucks for loose wiper arm nuts. Repair is free at any franchised Mack dealer.
Mack is recalling 204 2023-2024 Lr garbage trucks because loose wiper arm retention nuts can strip and stop the windshield wipers from working. Inoperative wipers reduce visibility and increase crash risk, and Mack dealers will inspect and tighten the retention nuts free of charge.
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What's wrong?
The windshield wiper motor on the 2023-2024 Mack Lr garbage truck turns the wiper arm across the windshield. The arm is held to the motor shaft by a retention nut, and the splines on the shaft and arm need firm contact so the motor's motion actually moves the blade. When the nut is tightened correctly, the wiper stays aligned and keeps the driver's view clear in rain or spray.
On affected trucks, the fastener torque was not enough to keep the wiper arm fully engaged with the motor shaft splines. The loose connection can strip the splines, which lets the arm slip instead of following the motor. Once that happens, the windshield wiper no longer wipes the glass as designed and the driver's forward visibility is reduced.
Owners or drivers can see the warning sign at the wiper arm itself. The arm can droop below its normal windshield position, or the blade can wipe less of the glass than it should.
Who's affected?
Both model years involve the left-hand wiper motor in the wiper system.
| 2024 Mack Lr | wiper system |
|---|---|
| 2023 Mack Lr | wiper system |
| Units affected | 204 |
| Field incidents | NHTSA has logged no field incidents to date. |
A matching year and model does not confirm inclusion. Check your VIN to confirm whether your specific truck is included.
What's the safety risk?
Inoperative windshield wipers reduce visibility and increase the risk of a crash. If the wiper arms droop below the windshield or wiping coverage drops, avoid rain or road spray and schedule service soon. The dealer will inspect, tighten the retention nuts, and replace wiper arms as needed. Repair is free at any franchised Mack dealer.
What should I do?
- Check your VIN to confirm your 2023-2024 Mack Lr is included in this recall.
- Contact a franchised Mack dealer to schedule the free windshield-wiper inspection and repair that fixes loose retention nuts and failed wiper arms.
- Bring the recall notice if Mack mailed one. If not, reference recall number 23V465 when you call.
- Avoid driving in rain or poor visibility until the wiper repair is complete.
What happens at the repair
At the dealer, a Mack technician inspects the windshield wiper arm retention nuts, tightens them, and replaces the wiper arms if the inspection shows damage or poor fit. The recall repair is available now, and parts and labor are free. If you already paid out of pocket for this wiper arm repair before the recall notice, Mack's standard reimbursement plan covers documented recall-related expenses. Bring your repair paperwork and receipts to the service desk when you schedule the recall work.
| Reimbursement | Reimbursement available |
|---|
Timeline
| July 3, 2023 | NHTSA published the recall |
|---|---|
| July 6, 2023 | Dealer notification began |
| July 6, 2023 | Dealer notification ended |
| August 22, 2023 | Owner notification mailed |
| August 25, 2023 | Interim owner notification (was planned for this date) |
Frequently asked questions
What is recall 23V465?
Recall 23V465 covers 204 2023-2024 Mack Lr garbage trucks with loose wiper arm retention nuts. The nuts can strip and cause the windshield wipers to fail, reducing visibility and increasing crash risk. Mack dealers will inspect and tighten the nuts, and replace wiper arms if needed, for free.
What should I do if my 2023-2024 Mack Lr is on this recall?
Check your VIN to confirm your specific truck is included in recall 23V465. If it is, contact a franchised Mack dealer to schedule the wiper arm inspection and repair. Reference recall 23V465 or Mack recall SC0445 when you call. The repair is free.
Is the Mack Lr recall repair free?
Yes. Federal recall law requires the manufacturer to repair the defect at no cost, and Mack says dealers will inspect and tighten the wiper arm retention nuts and replace the windshield wiper arms if needed free of charge.
What is the safety risk in recall 23V465?
The safety risk is reduced visibility. If the loose wiper arm retention nuts strip, the windshield wipers can stop working. Inoperative windshield wipers can make it harder to see the road and increase crash risk, especially during rain, snow, or road spray.
When were owners notified about recall 23V465?
Mack mailed owner notification letters on August 22, 2023. If you own a 2023-2024 Mack Lr and never received a letter, check your VIN to confirm whether your truck is included before scheduling service with a Mack dealer.
More information
| NHTSA campaign page | nhtsa.gov/vehicle-recalls/23V465000 |
|---|---|
| Mack customer service | 1-800-866-1177 |
| NHTSA recall # | 23V465 |
| NHTSA recall # (full) | 23V465000 |
Source documents
-
Download Quarterly Report (PDF) - Download Owner Notification Letter (PDF)
- Download Recall Investigation Document (PDF) (PDF)
- Download Recall Report (PDF)
- Download Owner Notice (PDF)
- Download Recall Acknowledgement (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 →