Recall 12V564 affects 87 2011-2012 Prevost X3-45 coach buses with AFSS tanks exposed to engine heat. Repair is free at any franchised Prevost dealer.
Prevost is recalling 87 2011-2012 X3-45 coach buses equipped with an automatic fire detection and suppression system because engine-compartment heat can cause the storage tank's pressure relief valve to release the suppressant. If a fire starts after that release, the system can fail to operate as designed, increasing the risk of injury; the Prevost dealer repair will be free once available.
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What's wrong?
The automatic fire detection and suppression system on 2011-2012 Prevost X3-45 coach buses is equipment installed to detect an engine-compartment fire and discharge suppressant from a storage tank. The storage tank holds that suppressant under pressure, and the pressure relief valve is there to vent the tank if pressure climbs too high.
For NHTSA campaign 12V564, the problem is the tank location. As built, the AFSS storage tank sits in the engine compartment, where heat is high during normal operation. That heat can raise pressure in the tank until the pressure relief valve opens and releases the tank contents. Once that happens, the suppression system has lost the material it needs for its intended job.
There is no warning sign before failure. The filing does not identify a dashboard alert, smell, sound, or other owner-noticeable symptom before the pressure relief valve releases the tank contents.
Who's affected?
Covers X3-45 buses built from June 3, 2010, through August 25, 2011.
| 2011 Prevost X3-45 | Equipment |
|---|---|
| 2012 Prevost X3-45 | Equipment |
| Units affected | 87 |
The year and model narrow the scope, but the VIN decides. Check your VIN to confirm whether your specific bus is included.
What's the safety risk?
In a fire, the automatic fire suppression system can fail to operate as designed. That increases the injury risk for coach occupants because the system is part of the coach's fire response. Schedule the repair soon. Repair will be free at any franchised Prevost dealer once available.
What should I do?
- Check your VIN to confirm your 2011-2012 Prevost X3-45 is included in this recall.
- Contact Prevost customer service at 1-418-883-2888 to confirm current repair scheduling for recall number 12V564.
- Schedule the free AFSS storage-tank relocation that moves the tank out of the engine compartment so heat does not release its contents before a fire.
- Bring the Prevost owner notice mailed December 19, 2012, if you have it. If not, give the dealer recall number 12V564 when you call.
- Keep coach occupants informed until the repair is complete, since the fire-suppression system can fail to operate as designed in a fire.
What happens at the repair
The known repair is to move the Automatic Fire Detection and Suppression System extinguisher storage tank out of the high heat engine compartment location. Once the dealer repair is available, a Prevost technician relocates that storage tank so heat in the engine area is less likely to make the pressure relief valve discharge the tank contents. Parts and labor are covered under the recall.
Timeline
| December 6, 2012 | NHTSA published the recall |
|---|---|
| December 19, 2012 | Owner notification mailed |
Frequently asked questions
What is recall 12V564?
Recall 12V564 covers 87 2011-2012 Prevost X3-45 coach buses equipped with an Automatic Fire Detection and Suppression System. The AFSS storage tank was built in the engine compartment, where high heat can release the tank contents. Prevost dealers relocate the tank for free.
What should I do if my 2011-2012 Prevost X3-45 is on this recall?
Check your VIN to confirm your specific coach is included in recall 12V564. If it is, contact a franchised Prevost dealer to schedule the AFSS storage tank relocation. Reference recall number 12V564 when you call. The repair is free.
Is the recall repair free?
Yes. Federal recall law requires manufacturers to repair safety defects at no cost. Prevost dealers relocate the extinguisher storage tank free of charge under recall 12V564, and the source remedy says the recall began on December 19, 2012.
What is the safety risk?
The safety risk is reduced fire suppression during an engine-compartment fire. High heat can release the contents of the AFSS storage tank before the system is needed, so the fire detection and suppression system does not operate as designed and injury risk to coach occupants increases.
More information
| NHTSA campaign page | nhtsa.gov/vehicle-recalls/12V564000 |
|---|---|
| Prevost customer service | 1-418-883-2888 |
| NHTSA recall # | 12V564 |
| NHTSA recall # (full) | 12V564000 |
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 →