Recall 12V144 affects 5 2011 Mo Trailers 41 Vs and 39 Vs trailers for brake actuator pump failure. Repair will be free at Mo Trailers.
Mo Trailers is recalling 5 2011 41 Vs and 39 Vs trailers because the electric/hydraulic brake actuator pump was not properly heat treated and can wear out early. If the actuator stops working, the trailer can lose braking effort and raise crash risk; the repair will be free once Mo Trailers makes it available.
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What's wrong?
The electric/hydraulic brake actuator pump on the 2011 Mo Trailers 41 Vs and 39 Vs trailers is the bridge between the tow vehicle's brake command and the trailer's hydraulic brakes. When the driver brakes, the actuator uses an electric signal to run a pump that builds hydraulic pressure, so the trailer brakes apply with the tow vehicle.
In the affected pumps, some parts were not properly heat treated. Heat treatment hardens metal parts so they resist wear under load. When that step is wrong, critical pieces inside the pump wear early, and that wear can make the actuator stop working.
There is no warning sign before failure. The first sign is a trailer brake actuator that no longer builds the hydraulic pressure the brakes need.
Who's affected?
Covers the 41 Vs and 39 Vs trailer models, both listed under Equipment.
| 2011 Mo Trailers 41 Vs | Equipment |
|---|---|
| 2011 Mo Trailers 39 Vs | Equipment |
| Units affected | 5 |
A matching 2011 Mo Trailers model does not guarantee inclusion. Check your VIN to confirm whether your specific trailer is included.
What's the safety risk?
The E/H brake actuator supplies braking power to the trailer brakes. If the actuator fails, the trailer can lose braking effort, increasing crash risk. There is no warning sign listed before failure, so keep more stopping distance and contact the dealer before hauling. Repair will be free at any franchised Mo Trailers dealer once available.
What should I do?
- Check your VIN to confirm your 2011 Mo Trailers 41 Vs or 39 Vs trailer is included in this recall.
- Contact Mo Trailers at 1-574-533-0824 to ask whether your trailer has an affected electric/hydraulic brake actuator pump.
- Avoid towing the trailer until Mo Trailers confirms the actuator pump is not affected or the recall remedy is complete.
- Ask Mo Trailers for the free recall remedy that fixes the actuator-pump wear problem and restores trailer braking power.
- Bring any owner notice you received. If none, reference recall number 12V144 when you contact Mo Trailers.
What happens at the repair
Mo Trailers notified affected owners, but the remedy text does not list a final inspection or replacement procedure. Before arranging service, contact Mo Trailers and ask which brake actuator pump remedy applies to your 2011 39 Vs or 41 Vs trailer, or to an affected retail actuator. At the dealer, a Mo Trailers technician should confirm the electric hydraulic brake actuator pump covered by recall 12V144 and apply the approved repair when it opens. The final dealer repair will be free once available.
Timeline
| March 26, 2012 | Owner notification mailed |
|---|---|
| April 4, 2012 | NHTSA published the recall |
Frequently asked questions
What is recall 12V144?
Recall 12V144 covers 5 2011 Mo Trailers 41 Vs and 39 Vs trailers, plus affected retail E/H brake actuator pumps. The pumps were not properly heat treated, which can cause premature wear and make the brake actuator inoperable.
What should I do if my 2011 Mo Trailers 41 Vs or 39 Vs is on this recall?
Check your VIN to confirm your specific trailer is included in recall 12V144. If it is, contact Mo Trailers at 1-574-533-0824 and ask for the recall repair path for the E/H brake actuator pump.
Is the recall repair free?
Yes. Federal recall law requires manufacturers to repair safety defects at no cost. For recall 12V144, contact Mo Trailers and reference the E/H brake actuator pump recall so the service desk can confirm the covered repair for your trailer or affected retail part.
What is the safety risk?
The trailer can lose braking effort if the E/H brake actuator fails. That actuator supplies braking power to the trailer brakes, so an inoperable unit increases crash risk. Confirm the recall with your VIN and arrange the repair through Mo Trailers.
When were owners notified about this recall?
Mo Trailers notified owners of the affected actuators on March 26, 2012. If you bought the trailer used or never received a letter, check your VIN and call Mo Trailers with recall 12V144 so they can confirm whether the recall applies.
More information
| NHTSA campaign page | nhtsa.gov/vehicle-recalls/12V144000 |
|---|---|
| Mo Trailers customer service | 1-574-533-0824 |
| NHTSA recall # | 12V144 |
| NHTSA recall # (full) | 12V144000 |
Source documents
-
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 →