Recall 24V559 affects 166 2019-2021 Nova Bus Lfs and Lfs Artic buses for rear brake chamber leaks. Free repair at a franchised Nova Bus dealer.
Nova Bus is recalling 166 2019-2021 Lfs and Lfs Artic buses because an improperly manufactured rear-axle brake chamber can leak air. That leak can make the brakes engage unexpectedly, overheat the brakes, and raise the risk of a fire or crash; Nova Bus dealers will complete the repair free of charge.
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What's wrong?
The brake chamber on these 2019-2021 Nova Bus Lfs and Lfs Artic buses is part of the air-brake system at the rear axle. It turns compressed air pressure into mechanical force, pushing the brake mechanism so the rear brakes apply when the driver presses the pedal. The chamber has to hold air pressure without leaking for the brakes to release and apply correctly.
On affected buses, the rear brake chamber was improperly manufactured by the supplier. The affected Knorr-Bremse K038830N00 chamber can leak air, which can leave the rear brake dragging instead of fully releasing. That dragging brake adds heat and resistance, and the repair replaces the affected chamber with part K234368N00.
There is no warning sign before failure. Nova Bus reported that operators had found dragging brakes during service, but there is no advance warning before the air leak occurs. If the bus shows brake drag or abnormal brake resistance, keep it out of route service until inspected.
Who's affected?
Covers the Lfs and Lfs Artic across the 2019, 2020, and 2021 model years, all tied to the same brake chamber.
| 2019 Nova Bus Lfs | brake system |
|---|---|
| 2019 Nova Bus Lfs Artic | brake system |
| 2020 Nova Bus Lfs | brake system |
| 2021 Nova Bus Lfs | brake system |
| Units affected | 166 |
| Field incidents | NHTSA has logged 50 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?
A brake chamber air leak can make the brakes engage without warning. That unexpected braking can overheat the brakes, raise fire risk, and increase crash risk. There is no warning sign before the problem occurs, so schedule the inspection and repair soon. Repair is free at any franchised Nova Bus dealer.
What should I do?
- Check your VIN to confirm your 2019-2021 Nova Bus Lfs or Lfs Artic bus is included in this recall.
- Contact a franchised Nova Bus service location to schedule the free rear-axle brake-chamber inspection and replacement that addresses the air leak risk.
- Bring the owner letter if you have it. If not, reference recall number 24V559 when you call.
- Report any brake-air leak, unexpected braking, or brake overheating when you schedule service.
- Call Nova Bus customer service at 1-800-350-6682 with questions about the free repair.
What happens at the repair
At the dealer, a Nova Bus technician inspects the rear axle brake chamber and replaces it if the inspection shows the chamber is affected. The inspection, replacement part, and labor are free under the recall. If you already paid out of pocket for a related brake chamber repair before the owner letter, Nova Bus's standard reimbursement plan covers documented expenses. Bring repair paperwork and proof of payment to the service desk, or contact Nova Bus customer service for the claim path.
| Reimbursement | Reimbursement available |
|---|
Timeline
| July 25, 2024 | NHTSA published the recall |
|---|---|
| August 1, 2024 | Dealer notification began |
| August 1, 2024 | Dealer notification ended |
| September 22, 2024 | VIN-searchable in NHTSA's database — Check your VIN to see whether this recall applies to your specific vehicle. |
| September 22, 2024 | Interim owner notification (was planned for this date) |
| November 2, 2024 | Owner notification mailed |
Frequently asked questions
What is recall 24V559?
Recall 24V559 covers 166 2019-2021 Nova Bus Lfs and Lfs Artic buses with rear-axle brake chambers that were improperly manufactured. An air leak can make the brakes engage unexpectedly, overheat the brakes, increase fire risk, and increase crash risk. Nova Bus will inspect and replace the brake chamber for free.
What should I do if my 2019-2021 Nova Bus Lfs or 2019 Nova Bus Lfs Artic is on this recall?
Check your VIN to confirm your specific bus is included in recall 24V559. If it is, contact a franchised Nova Bus service location to schedule the brake chamber inspection and replacement if needed. Reference recall number 24V559 or Nova Bus recall CR5620 when you call.
Is the recall repair free?
Yes. Federal recall law requires the manufacturer to repair the defect at no cost. Nova Bus will inspect the rear-axle brake chamber and replace it as necessary free of charge at a franchised Nova Bus service location.
What is the safety risk?
The safety risk is unexpected brake engagement from an air leak in the rear-axle brake chamber. That condition can overheat the brakes and increase the risk of a fire. Unexpected braking also increases crash risk. Confirm the VIN, then arrange the free inspection and repair.
When were owners notified about recall 24V559?
Nova Bus mailed owner notification letters on November 02, 2024. If you own or operate a bus in this recall and did not receive a letter, check your VIN and contact Nova Bus customer service at 1-800-350-6682 with recall number CR5620.
More information
| NHTSA campaign page | nhtsa.gov/vehicle-recalls/24V559000 |
|---|---|
| Nova Bus customer service | 1-800-350-6682 |
| NHTSA recall # | 24V559 |
| NHTSA recall # (full) | 24V559000 |
Source documents
-
Download Quarterly Report (PDF) - Download Recall Investigation Document (PDF) (PDF)
- Download Owner Notification Letter (PDF)
- Download Recall Document (PDF) (PDF)
- Download Recall Report (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 →