Recall 24V392 covers 106 2025 Thomas Built Buses Saf-T-Liner C2 and Saf-T-Liner Efx buses for loose wheel hub fasteners. Free dealer repair.
Thomas Built Buses is recalling 106 2025 Saf-T-Liner C2 and Saf-T-Liner Efx school buses because wheel hub fasteners can loosen and let a wheel detach. A detached wheel can lead to loss of vehicle control and increase crash risk, and Thomas Built Buses dealers will complete the recall repair free of charge.
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What's wrong?
The wheel hub on a 2025 Thomas Built Buses Saf-T-Liner C2 or Saf-T-Liner Efx school bus supports the wheel and keeps it held in the correct position on the axle. Its fasteners, snap ring, retainer washer, and locking tabs keep the wheel end tight as the bus carries weight, brakes, and turns.
On affected buses, the preset hubs can be missing a snap ring, and the conventional 4-piece fastener hubs can have retainer tabs that were not bent inward as required. Those missing or incorrectly positioned parts let the hub fasteners loosen. Once that happens, the wheel end develops excessive endplay, which means the wheel assembly has too much movement on the axle. In the worst case, the wheel can detach and the driver can lose vehicle control.
Owners or operators can see anti-lock braking system (ABS) diagnostic trouble codes if the wheel end has too much movement. Hub oil leakage from a failed hub seal is another warning sign to take seriously.
Who's affected?
Covers Saf-T-Liner C2 and Saf-T-Liner Efx buses from the same model year, both using the same wheel hardware.
| 2025 Thomas Built Buses Saf-T-Liner C2 | wheel hardware |
|---|---|
| 2025 Thomas Built Buses Saf-T-Liner Efx | wheel hardware |
| Units affected | 106 |
| 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 this recall applies to your specific bus.
What's the safety risk?
Excessive wheel endplay can lead to loss of vehicle control, increasing the risk of a crash. Treat ABS diagnostic trouble codes or visible hub oil leakage as warning signs and schedule the repair soon. Repair is free at any franchised Thomas Built Buses dealer.
What should I do?
- Check your VIN to confirm your 2025 Thomas Built Buses Saf-T-Liner C2 or Saf-T-Liner Efx is included in this recall.
- Contact a franchised Thomas Built Buses dealer to schedule the free wheel-hub inspection and repair.
- Ask the dealer to inspect and replace the hub nut retaining system, wheel end, and axle components as needed to secure the loose wheel fasteners.
- Bring the owner letter if you have it. If not, reference recall number 24V392 when you call.
- Drive cautiously until the repair is complete, and remove the bus from service if wheel-end looseness or handling changes appear.
What happens at the repair
At the dealer, a Thomas Built Buses technician inspects the hub nut retaining system, wheel end, and axle components. The technician replaces the affected retaining hardware, wheel end parts, or axle components as needed. Parts and labor are covered under recall 24V392. If you already paid for a related hub, wheel end, or axle repair, use the reimbursement instructions in your owner letter and work through an authorized dealer. Bring repair orders, receipts, and payment records so the service desk can review the claim.
| Reimbursement | Reimbursement available |
|---|
Timeline
| June 3, 2024 | NHTSA published the recall |
|---|---|
| June 20, 2024 | Dealer notification began |
| June 20, 2024 | Dealer notification ended |
| July 18, 2024 | Owner notification mailed |
| July 30, 2024 | VIN-searchable in NHTSA's database — Check your VIN to see whether this recall applies to your specific vehicle. |
| July 30, 2024 | Interim owner notification (was planned for this date) |
Frequently asked questions
What is recall 24V392?
Recall 24V392 covers 106 2025 Thomas Built Buses Saf-T-Liner C2 and Saf-T-Liner Efx school buses with wheel hub fasteners that can loosen and allow a wheel to detach. That can cause loss of vehicle control. Dealers will inspect and replace affected wheel-end parts for free.
What should I do if my 2025 Thomas Built Buses Saf-T-Liner C2 or Saf-T-Liner Efx is on this recall?
Check your VIN to confirm the bus is included in recall 24V392. If it is, contact a franchised Thomas Built Buses dealer to schedule the hub nut retaining system, wheel end, and axle inspection and replacement work. Reference recall F1002 when you call.
Is the recall repair free?
Yes. Federal recall law requires the manufacturer to repair the defect at no cost. Thomas Built Buses dealers will inspect and replace the hub nut retaining system, wheel end, and axle components, as needed, free of charge.
What is the safety risk?
The safety risk is loss of vehicle control if a wheel detaches. The recall involves wheel hub fasteners that can loosen on affected school buses. Until the dealer completes the inspection and any needed replacement work, keep the bus out of passenger service.
When were owners notified about this recall?
Owner notification letters were mailed July 18, 2024. If you manage a 2025 Thomas Built Buses Saf-T-Liner C2 or Saf-T-Liner Efx and did not receive a letter, check your VIN and contact DTNA customer service at 800-745-8000.
More information
| NHTSA campaign page | nhtsa.gov/vehicle-recalls/24V392000 |
|---|---|
| Thomas Built Buses customer service | 800-745-8000 |
| NHTSA recall # | 24V392 |
| NHTSA recall # (full) | 24V392000 |
Source documents
-
Download Quarterly Report (PDF) - Download Recall Report (PDF)
- Download Owner Notice (PDF)
- Download Owner Notification Letter (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 →