Recall 17V631 affects 356 2016-2017 E-One Typhoon, Quest, and Cyclone Ii emergency vehicles for loose steering-assist bolts. Repair is free at any franchised E-One dealer.
E-One is recalling 356 2016-2017 Typhoon, Quest, and Cyclone Ii emergency vehicles because the power steering assist cylinder has a tightening defect at the steering arm. If that cylinder detaches, the vehicle can lose power steering assist and face higher crash risk; E-One dealers will complete the repair free of charge.
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What's wrong?
The power steering assist cylinder on 2016-2017 E-One Quest, Cyclone Ii, and Typhoon emergency vehicles helps move the steering linkage when the driver turns the wheel. It uses hydraulic force to reduce steering effort, especially at low speeds and during tight maneuvers. The cylinder must stay firmly attached to the steering arm so its force goes into the wheels instead of loose hardware.
On affected vehicles, the cylinder attachment and adjustment points were tightened below the recommended torque. That leaves the joint less secure than designed. If the connection loosens, the steering assist cylinder can disengage from the steering arm, reducing the power assist the driver expects and making steering response less predictable.
Owners or crews can notice rattling in the steering system before the attachment comes loose. Treat that noise or vibration as a warning sign and have the steering assist cylinder attachment inspected.
Who's affected?
Covers Typhoon, Quest, and Cyclone Ii fire apparatus from the 2016 and 2017 model years, all tied to the power steering system.
| 2017 E-One Typhoon | power steering system |
|---|---|
| 2017 E-One Quest | power steering system |
| 2016 E-One Quest | power steering system |
| 2016 E-One Typhoon | power steering system |
| 2017 E-One Cyclone Ii | power steering system |
| 2016 E-One Cyclone Ii | power steering system |
| Units affected | 356 |
| 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 truck is included.
What's the safety risk?
If the steering assist cylinder detaches, the vehicle loses power steering assist, which increases the risk of a crash. Rattling in the steering system is the warning sign listed for this recall. Treat new steering noise as a reason to slow down, stop safely, and schedule service soon. Repair is free at any franchised E-One dealer.
What should I do?
- Check your VIN to confirm your 2016-2017 E-One Typhoon, Quest, or Cyclone Ii emergency vehicle is included in this recall.
- Contact a franchised E-One dealer to schedule the free steering-assist-cylinder bolt inspection and retightening that keeps the power steering assist cylinder secured to the steering arm.
- Bring the recall notice if E-One mailed one. If not, reference recall number 17V631 when you call.
- Drive cautiously until the repair is complete, and stop safely if steering effort increases.
What happens at the repair
At the dealer, an E-One technician inspects the steering assist cylinder mounting bolts and retightens them to the proper specification. The inspection and bolt retightening are free under the recall. If you've already paid for related steering assist cylinder work, keep the invoice and any repair paperwork. E-One says it will reimburse dealers and customers for related expenses, so ask the dealer or E-One customer service how to submit documentation for reimbursement.
| Reimbursement | Reimbursement available |
|---|
Timeline
| October 9, 2017 | NHTSA published the recall |
|---|---|
| November 13, 2017 | Dealer notification began |
| November 13, 2017 | Interim owner notification (was planned for this date) |
| November 18, 2017 | Dealer notification ended |
| November 27, 2017 | Owner notification mailed |
Frequently asked questions
What is recall 17V631?
Recall 17V631 covers 356 2016-2017 E-One Typhoon, Quest, and Cyclone Ii emergency vehicles with a power steering assist cylinder that was not properly tightened to the steering arm. If it detaches, power steering assist is lost, increasing crash risk. E-One dealers inspect and retighten the mounting bolts for free.
What should I do if my 2016-2017 E-One Typhoon, Quest, or Cyclone Ii is on this recall?
Check your VIN to confirm your specific emergency vehicle is included in recall 17V631. If it is, contact an E-One dealer to schedule the steering assist cylinder inspection and bolt retightening. Reference recall number 17V631 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 to owners. E-One dealers will inspect the steering assist cylinder mounting bolts and retighten them free of charge.
What is the safety risk?
The safety risk is loss of power steering assist. If the steering assist cylinder detaches from the steering arm, the driver has less steering assistance, which increases crash risk. Confirm your VIN, then arrange the free dealer inspection and bolt retightening if your vehicle is included.
What if I bought this E-One emergency vehicle used?
The free recall repair still applies. Recall coverage follows the vehicle, not the first owner. Check your VIN to confirm whether your 2016-2017 E-One Typhoon, Quest, or Cyclone Ii is included, then reference recall number 17V631 when you contact an E-One dealer.
More information
| NHTSA campaign page | nhtsa.gov/vehicle-recalls/17V631000 |
|---|---|
| E-One customer service | 1-352-861-3612 |
| NHTSA recall # | 17V631 |
| NHTSA recall # (full) | 17V631000 |
Source documents
-
Download Owner Notification Letter (PDF) - Download Recall Report (PDF)
- Download Quarterly Report (PDF)
- Download Recall Acknowledgement (PDF)
This article is generated from NHTSA's primary recall filings and reviewed against the source on May 25, 2026. RecallNotify does not paraphrase NHTSA's consequence language; that text is reproduced as written above. Editorial standards →