Recall 24V194 affects 22 2024 E-One Cyclone N, Typhoon, Typhoon N, and Commercial vehicles for overloaded electrical circuits. Free update at a franchised E-One dealer.
E-One is recalling 22 2024 Cyclone N, Typhoon, Typhoon N, and Commercial vehicles because Hercules HC 1.7 multiplex node firmware can fail to shut off an output pin after a short circuit or wiring failure. That fault can overload electrical circuits, overheat the wiring, and raise the risk of fire; E-One dealers will complete the repair free of charge.
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What's wrong?
The Hercules HC 1.7 node is a multiplex node, which is an electronic control box that helps route power and commands through the vehicle's electrical system. On 2024 E-One Cyclone N, Typhoon, Typhoon N, and Commercial vehicles, this node uses firmware to control an output pin that turns an electrical circuit on or off.
In the recalled vehicles, the affected firmware does not shut off that output pin correctly when there is a short circuit or wiring failure. The circuit stays energized, which overloads the electrical circuit and overheats the node. E-One identified the affected vehicles by the node part, firmware version 1.00, serial range, and production date range supplied by Weldon.
There is no warning sign before failure. An owner or operator should not expect a dash message, sound, smell, or change in vehicle operation before the electrical overload happens.
Who's affected?
Covers four E-One fire truck lines in the 2024 model year, all tied to the Hercules HC 1.7 multiplex node.
| 2024 E-One Cyclone N | electrical system |
|---|---|
| 2024 E-One Typhoon | electrical system |
| 2024 E-One Typhoon N | electrical system |
| 2024 E-One Commercial | electrical system |
| Units affected | 22 |
| Field incidents | NHTSA has logged no field incidents to date. |
A matching year and model does not guarantee inclusion. Check your VIN to confirm whether your specific truck is included.
What's the safety risk?
Overloaded electrical circuits can overheat and increase the risk of fire. There is no warning sign before failure, so schedule the recall repair soon and avoid delaying service because the vehicle seems normal. Repair is free at any franchised E-One dealer.
What should I do?
- Check your VIN to confirm your 2024 E-One Cyclone N, Typhoon, Typhoon N, or Commercial vehicle is included in this recall.
- Contact a franchised E-One dealer to schedule the free Weldon firmware update that corrects the Hercules HC 1.7 multiplex node output-pin shutdown problem.
- Bring the owner notice if E-One mailed one, or reference recall number 24V194 when you call.
- Avoid operating the vehicle with known electrical shorts or wiring failures until the update is complete.
- Call E-One customer service at 1-352-237-1122 with questions about scheduling or repair coverage.
What happens at the repair
At the dealer, an E-One technician updates the firmware in the Hercules HC 1.7 multiplex node so the node can shut off the output pin as intended after a short circuit or wiring failure. The software update is free under recall 24V194. If you already paid for a related repair before the owner notice, E-One says it will evaluate reimbursement individually. Contact E-One customer service at 1-352-237-1122 and have repair paperwork ready.
| Reimbursement | Reimbursement available |
|---|
Timeline
| March 12, 2024 | NHTSA published the recall |
|---|---|
| March 20, 2024 | Dealer notification began |
| March 25, 2024 | Dealer notification ended |
| April 1, 2024 | VIN-searchable in NHTSA's database — Check your VIN to see whether this recall applies to your specific vehicle. |
| April 1, 2024 | Interim owner notification (was planned for this date) |
| April 5, 2024 | Owner notification mailed |
Frequently asked questions
What is recall 24V194?
Recall 24V194 covers 22 2024 E-One Commercial, Cyclone N, Typhoon, and Typhoon N vehicles equipped with Hercules HC 1.7 multiplex nodes. A short circuit or wiring failure can leave an output pin on, overload electrical circuits, and increase the risk of fire. Weldon will update the firmware for free.
What should I do if my 2024 E-One Cyclone N, Typhoon, Typhoon N, or Commercial is on this recall?
Check your VIN to confirm your specific vehicle is included in recall 24V194. If it is, contact E-One customer service at 1-352-237-1122 or your franchised E-One service contact to arrange the free Hercules HC 1.7 multiplex node firmware update.
Is the recall repair free?
Yes. Federal recall law requires the manufacturer to repair the defect at no cost, and E-One's remedy states that Weldon will update the firmware free of charge. Parts and labor for the recall repair are covered.
What is the safety risk?
The safety risk is fire from overheated electrical circuits. In a short circuit or wiring failure, the Hercules HC 1.7 multiplex node firmware can fail to shut off the output pin, which overloads the circuit. Confirm the VIN and arrange the free firmware update.
When were owners notified about recall 24V194?
E-One mailed owner notification letters on April 5, 2024. If you own one of these 2024 E-One vehicles and never received a letter, check your VIN and reference recall 24V194 when you contact E-One customer service or your service contact.
More information
| NHTSA campaign page | nhtsa.gov/vehicle-recalls/24V194000 |
|---|---|
| E-One customer service | 1-352-237-1122 |
| NHTSA recall # | 24V194 |
| NHTSA recall # (full) | 24V194000 |
Source documents
-
Download Quarterly Report (PDF) - Download Owner Notification Letter (PDF)
- Download Misc. Document (PDF)
- Download Owner Notice (PDF)
- Download Recall Acknowledgement (PDF)
- Download Recall Report (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 →