Recall 12V236 affects 270 2010-2012 Mcneilus Zr trucks because hazard warning lamps fail with ignition off. Mcneilus service technicians connect them to power for free.
Mcneilus is recalling 270 2010-2012 Zr trucks because the hazard warning lamps do not work when the ignition is off. Inadequate lighting can reduce the truck's visibility and increase crash risk, and the dealer repair will be free once available.
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What's wrong?
The hazard warning lamps on 2010-2012 Mcneilus Zr trucks are the exterior flashers that blink to warn other drivers when the truck is stopped, disabled, or creating a roadside hazard. They are supposed to work even when the ignition is off, so a parked or disabled truck stays visible without the key left on.
On affected trucks, the hazard warning lamps do not operate when the ignition is in the off position. The issue is in the hazard lamp function, not the owner's use of the switch. When the truck is shut down, the flashers lose the operation they need to warn traffic around the vehicle.
There is no warning sign before failure. The problem shows up when the driver tries to use the hazard warning lamps with the ignition off and the exterior flashers do not work.
Who's affected?
All listed Zr trucks share the same hazard flashing warning-light component.
| 2011 Mcneilus Zr | Hazard flashing warning lights |
|---|---|
| 2012 Mcneilus Zr | Hazard flashing warning lights |
| 2010 Mcneilus Zr | Hazard flashing warning lights |
| Units affected | 270 |
The year and model narrow the scope, but the VIN decides. Check your VIN to confirm whether your specific truck is included.
What's the safety risk?
Inadequate hazard warning lighting reduces the vehicle's visibility to other drivers and increases crash risk. Drive cautiously around traffic, and schedule the recall repair soon so the lighting is corrected. Repair will be free at any franchised Mcneilus dealer once available.
What should I do?
- Check your VIN to confirm your 2010-2012 Mcneilus Zr is included in this recall.
- Review the owner notice Mcneilus mailed for this recall, or call Mcneilus if you never received it.
- Ask Mcneilus when service technicians can connect the hazard warning lights directly to the vehicle power supply for free.
- Reference recall number 12V236 when you call so the service desk can find the correct hazard-light repair.
- Use extra caution when stopping or parked with the ignition off, because the hazard warning lights do not work until the repair is complete.
What happens at the repair
At the dealer, a Mcneilus service technician connects the hazard warning lights directly to the vehicle's power supply. That repair is meant to keep the hazard lamps working when the ignition is off. The filing says the work is free of charge. The remedy status is not listed for this campaign, so confirm scheduling with a Mcneilus service contact before bringing the truck in. The dealer repair will be free once available.
Timeline
| May 22, 2012 | NHTSA published the recall |
|---|---|
| June 18, 2012 | Owner notification mailed |
Frequently asked questions
What is recall 12V236?
Recall 12V236 covers 270 2010-2012 Mcneilus Zr trucks with hazard warning lamps that do not work when the ignition is off. Mcneilus service technicians will connect the hazard warning lights directly to the vehicle power supply for free.
What should I do if my 2010-2012 Mcneilus Zr is on this recall?
Check your VIN to confirm your specific truck is included in recall 12V236. If it is, contact Mcneilus at 507-374-6321 and ask for the hazard warning light repair. Reference recall number 12V236 when you call. The repair is free.
Is the recall repair free?
Yes. Federal recall law requires the manufacturer to repair the defect at no cost, and Mcneilus said its service technicians will connect the hazard warning lights directly to the vehicle power supply free of charge.
What is the safety risk?
The safety risk is reduced vehicle visibility when the hazard warning lamps do not work with the ignition off. That inadequate lighting increases crash risk. The repair corrects the power connection so the hazard warning lights can operate as required.
More information
| NHTSA campaign page | nhtsa.gov/vehicle-recalls/12V236000 |
|---|---|
| Mcneilus customer service | 507-374-6321 |
| NHTSA recall # | 12V236 |
| NHTSA recall # (full) | 12V236000 |
Source documents
-
Download Recall Document (PDF) (PDF) - Download Owner Notification Letter (PDF)
- Download Defect / Noncompliance Notice (PDF) (PDF)
- Download Recall Acknowledgement (PDF)
This article is generated from NHTSA's primary recall filings and reviewed against the source on June 2, 2026. RecallNotify does not paraphrase NHTSA's consequence language; that text is reproduced as written above. Editorial standards →