Recall 18V598 affects 777 2019 Ic Bus Cesb and Resb school buses for a brake-chamber defect. Repair is free at any franchised Ic Bus dealer.
Ic Bus is recalling 777 2019 Cesb and Resb school buses because the spring actuated parking brake can be improperly crimped to the long stroke service brake chamber. An air leak or separated spring brake chamber can lengthen stopping distance and increase crash risk, and Ic Bus dealers will complete the repair free of charge.
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What's wrong?
The long stroke brake chamber on the 2019 Ic Bus Cesb and Resb school buses is part of the air brake system. It uses air pressure to turn brake pedal force into braking force at the wheel. The spring actuated parking brake is attached to that assembly and holds the bus in place when the parking brake is set.
On these buses, the parking brake chamber was not fully crimped to the service brake chamber. The crimping tool's hold-down bar loosened, so the joint between the chambers was not fully locked together. That weak joint can let service brake air escape and can allow the spring brake chamber to separate from the service brake section.
There is no warning sign before failure. A driver should not rely on a sound, dashboard light, or visible change before the brake chamber leaks or separates.
Who's affected?
Cesb and Resb buses are tied to the same air-brake component in this recall.
| 2019 Ic Bus Cesb | brake system |
|---|---|
| 2019 Ic Bus Resb | brake system |
| Units affected | 777 |
| Field incidents | NHTSA has logged 4 field incidents to date. |
A matching year and model does not guarantee inclusion. Check your VIN to confirm whether your specific bus is included.
What's the safety risk?
An air leak or separation of the spring brake chamber can lengthen stopping distance and increase the risk of a crash. No warning sign is listed, so arrange service before relying on symptoms. Repair is free at any franchised Ic Bus dealer.
What should I do?
- Check your VIN to confirm your 2019 Ic Bus Cesb or Resb is included in this recall.
- Contact a franchised Ic Bus dealer to schedule the free brake-chamber assembly replacement that fixes the parking-brake chamber and service-brake chamber connection.
- Reference recall number 18V598 when you call, and bring the owner notice if you have it.
- Drive cautiously until the repair is complete, and leave extra stopping distance.
- Call Ic Bus customer service at 1-800-448-7825 with questions.
What happens at the repair
At the dealer, an Ic Bus technician replaces the brake chamber assembly covered by recall 18V598. The work addresses the spring actuated parking brake and long stroke service brake chamber connection, where a faulty crimp can allow an air leak or separation. Parts and labor are covered under the recall. If you already paid for a related brake chamber repair before the owner notice, Navistar's standard reimbursement plan applies. Follow the reimbursement instructions in the customer notification, or ask the Ic Bus service desk how to submit documentation.
| Reimbursement | Reimbursement available |
|---|
Timeline
| September 7, 2018 | NHTSA published the recall |
|---|---|
| October 23, 2018 | Owner notification mailed |
| November 6, 2018 | Dealer notification began |
| November 6, 2018 | Dealer notification ended |
| November 6, 2018 | Interim owner notification (was planned for this date) |
Frequently asked questions
What is recall 18V598?
Recall 18V598 covers 777 2019 Ic Bus Cesb and Resb school buses with brake chamber assemblies that can leak air or separate at the spring brake chamber. NHTSA campaign 18V598 says that failure can lengthen stopping distance and increase crash risk.
What should I do if my 2019 Ic Bus Cesb or Resb is on this recall?
Check your VIN to confirm your specific bus is included in recall 18V598. If it is, contact a franchised Ic Bus dealer to schedule brake chamber assembly replacement. Reference recall number 18V598 when you call. The repair is free.
Is the recall repair free?
Yes. Federal recall law requires the manufacturer to repair the defect at no cost, and the remedy for recall 18V598 is replacement of the brake chamber assembly free of charge at a franchised Ic Bus dealer.
What is the safety risk in recall 18V598?
NHTSA campaign 18V598 says an air leak or spring brake chamber separation can lengthen the distance needed to stop the bus. Longer stopping distance increases crash risk, so confirm the VIN and arrange the free dealer repair if the bus is included.
More information
| NHTSA campaign page | nhtsa.gov/vehicle-recalls/18V598000 |
|---|---|
| Ic Bus customer service | 1-800-448-7825 |
| NHTSA recall # | 18V598 |
| NHTSA recall # (full) | 18V598000 |
Source documents
-
Download Recall Investigation Document (PDF) (PDF) - 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 24, 2026. RecallNotify does not paraphrase NHTSA's consequence language; that text is reproduced as written above. Editorial standards →