Recall 23V126 affects 555 2018-2023 Prevost H3-45, H3-45 Vip, and H3-41 vehicles for optical fire sensor corrosion. Repair is free at any franchised Prevost dealer.
Prevost is recalling 555 2018-2023 H3-45, H3-45 Vip, and H3-41 vehicles because an engine-compartment optical fire sensor in the Automatic Fire Suppression System can corrode and malfunction. That false activation can shut down drive power and discharge fire suppressant, which raises crash and passenger-injury risk, and Prevost dealers will complete the recall repair free of charge.
Does this recall apply to your specific vehicle?
The official, free per-VIN recall check is run by NHTSA. Enter your VIN and we'll forward you directly — and add you to a free watchlist so you hear about new recalls for your vehicle.
Check my VIN at NHTSARecallNotify doesn't check your VIN — NHTSA's official tool does. We use your email only to alert you to new recalls.
Watch this vehicle for recalls
Add it to your free watchlist and we will alert you as new federal recalls are posted for your year, make and model. New-recall alerts are rolling out now.
You are on the watchlist.
We will email you as new federal recalls are posted for your vehicle.
What's wrong?
The optical fire sensor in affected 2018-2023 Prevost H3-45 Vip, H3-45, and H3-41 vehicles is part of the Automatic Fire Suppression System in the engine compartment. Its job is to detect an engine-compartment fire and tell the system when to warn the driver, shut the engine down, and release extinguishing agent.
On these vehicles, the sensor sits low in the engine compartment. That position exposes it to water, road salt, and other contaminants. The sensor bracket also lets the sensor housing sit directly against the bracket. Corrosion can form between those parts, damage the housing, let water in, and make the sensor falsely detect a fire.
Before an unwanted activation, the Automatic Fire Suppression System trouble light can turn on intermittently. The driver also receives a visible and audible alert before the engine shuts down and the fire suppression agent releases.
Who's affected?
Spans H3-45 Vip, H3-45, and H3-41 coaches across 2018-2023, all tied to the same fire-suppression sensor component.
| 2018 Prevost H3-45 Vip | Sensors |
|---|---|
| 2019 Prevost H3-45 Vip | Sensors |
| 2020 Prevost H3-45 Vip | Sensors |
| 2018 Prevost H3-45 | Sensors |
| 2019 Prevost H3-45 | Sensors |
| 2020 Prevost H3-45 | Sensors |
| 2021 Prevost H3-45 | Sensors |
| 2022 Prevost H3-45 | Sensors |
| 2021 Prevost H3-45 Vip | Sensors |
| 2022 Prevost H3-45 Vip | Sensors |
| 2023 Prevost H3-45 | Sensors |
| 2023 Prevost H3-45 Vip | Sensors |
| 2019 Prevost H3-41 | Sensors |
| Units affected | 555 |
| Field incidents | NHTSA has logged no field incidents to date. |
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?
Activation of the Automatic Fire Suppression System can cut drive power without warning, increasing the risk of a crash. A disabled coach also creates evacuation risk for passengers in traffic. Treat an intermittent trouble light, visible alert, or audible alert as a reason to contact Prevost service promptly. Repair is free at any franchised Prevost dealer.
What should I do?
- Check your VIN to confirm your 2018-2023 Prevost H3-45 Vip, H3-45, or H3-41 is included in this recall.
- Contact a franchised Prevost dealer to schedule the free AFSS optical fire sensor inspection and spacer installation.
- Ask the dealer whether the optical fire sensor needs replacement; this repair addresses sensor corrosion that can trigger a false fire warning and sudden engine shutdown.
- Bring the owner letter if you have it. If not, reference recall number 23V126 and Prevost recall SR23-05 when you call.
- Plan trips carefully until the repair is complete. Pull over safely if the fire suppression system gives a warning or the coach loses drive power.
What happens at the repair
At the dealer, a Prevost technician inspects the vehicle, installs spacers between the optical fire sensor and its bracket, and replaces the optical fire sensor if corrosion or damage requires it. Parts and labor are covered under the recall. If you already paid to inspect or correct this defect before the recall launched, Prevost's reimbursement plan covers documented costs. Ask Prevost customer service or the service desk how to submit the repair paperwork.
| Reimbursement | Reimbursement available |
|---|
Timeline
| February 24, 2023 | NHTSA published the recall |
|---|---|
| September 4, 2023 | Dealer notification began |
| September 4, 2023 | Dealer notification ended |
| September 4, 2023 | VIN-searchable in NHTSA's database — Check your VIN to see whether this recall applies to your specific vehicle. |
| September 4, 2023 | Interim owner notification (was planned for this date) |
| September 8, 2023 | Owner notification mailed |
Frequently asked questions
What is recall 23V126?
Recall 23V126 covers 555 2018-2023 Prevost H3-45 Vip, H3-45, and H3-41 vehicles with an Automatic Fire Suppression System optical fire sensor that can corrode and malfunction. Prevost will inspect the vehicle, install spacers, and replace the optical fire sensor if needed for free.
What should I do if my 2018-2023 Prevost H3-45 Vip, H3-45, or H3-41 is on this recall?
Check your VIN to confirm your specific Prevost is included in recall 23V126. If it is, contact a franchised Prevost dealer or Prevost customer service at 1-866-870-2046 to schedule the inspection and sensor work. Reference Prevost recall number SR23-05 when you call.
Is the recall repair free?
Yes. Federal recall law requires manufacturers to repair safety defects at no cost, and Prevost's remedy says the inspection, spacer installation, and optical fire sensor replacement if needed are free of charge at a franchised Prevost service location.
What is the safety risk?
The safety risk is sudden loss of drive power from unwanted Automatic Fire Suppression System activation. A disabled coach also creates evacuation risk for passengers in uncontrolled traffic. The free repair addresses the optical fire sensor mounting and replaces the sensor if needed.
More information
| NHTSA campaign page | nhtsa.gov/vehicle-recalls/23V126000 |
|---|---|
| Prevost customer service | 1-866-870-2046 |
| NHTSA recall # | 23V126 |
| NHTSA recall # (full) | 23V126000 |
Source documents
-
Download Quarterly Report (PDF) - Download Recall Document (PDF) (PDF)
- Download Recall Document (PDF) (PDF)
- Download Owner Notification Letter (PDF)
- Download Recall Report (PDF)
- Download Recall Document (PDF) (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 →