Recall 16V837 affects 20,673 2011-2016 Ic Bus Cesb, Casb, Ce, and Be buses for heater hose leaks. Free repair at a franchised Ic Bus dealer.
Ic Bus is recalling 20,673 2011-2016 Cesb, Casb, Ce, and Be school buses because a formed heater hose at the water shutoff valve can fatigue and split, leaking hot engine coolant into the driver's foot area. Hot, pressurized coolant in that area increases the risk of burn injury or a crash, and Ic Bus dealers will complete the repair free of charge.
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What's wrong?
The heater hose on affected 2011-2016 Ic Bus Cesb, Casb, Ce, and Be school buses carries hot engine coolant to the driver's heater. The water shutoff valve sits inside, forward of the driver heater, and controls coolant flow so the heater can warm the driver's area. The hose has to hold its shape while handling heat, vibration, and cooling system pressure.
On these buses, repeated heat and high pressure cycles can damage the hose from the inside. The yarn reinforcement can cut into or weaken the rubber, and the formed hose can fatigue over time. Once the rubber splits, hot engine coolant can leak into the driver's foot area instead of staying inside the cooling system.
The warning signs are visible hose damage, including hardness, cracks, blisters, or splits during inspection. Heater and coolant hoses should be checked annually, and any damaged hose needs dealer attention before it leaks or bursts.
Who's affected?
Covers four Ic Bus model lines from 2011 through 2016, all involving cooling-system hoses, lines, piping, or fittings.
| 2016 Ic Bus Cesb | Hoses/lines/piping/fittings |
|---|---|
| 2015 Ic Bus Casb | Hoses/lines/piping/fittings |
| 2014 Ic Bus Casb | Hoses/lines/piping/fittings |
| 2013 Ic Bus Casb | Hoses/lines/piping/fittings |
| 2011 Ic Bus Ce | Hoses/lines/piping/fittings |
| 2012 Ic Bus Ce | Hoses/lines/piping/fittings |
| 2012 Ic Bus Be | Hoses/lines/piping/fittings |
| 2013 Ic Bus Be | Hoses/lines/piping/fittings |
| 2014 Ic Bus Be | Hoses/lines/piping/fittings |
| 2015 Ic Bus Be | Hoses/lines/piping/fittings |
| Units affected | 20,673 |
| Field incidents | NHTSA has logged 3 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?
Hot, pressurized coolant spilling into the operator's foot area increases the risk of a burn injury or a crash. Watch for heater or coolant hoses that are hard, cracked, blistered, or split, and schedule service promptly if those signs appear. Repair is free at any franchised Ic Bus dealer.
What should I do?
- Check your VIN to confirm your 2011-2016 Ic Bus Cesb, Casb, Ce, or Be is included in this recall.
- Contact a franchised Ic Bus dealer to schedule the free formed-heater-hose replacement that stops hot coolant from leaking into the driver's foot area.
- Bring the owner notice to the appointment, or reference recall number 16V837 when you call.
- Avoid operating the bus if coolant leaks into the driver's foot area; ask the dealer how to move it safely before the repair.
What happens at the repair
At the dealer, an Ic Bus technician replaces the formed heater hose connected to the water shutoff valve near the driver heater with a replacement hose. The replacement parts and labor are free under the recall. If you paid out of pocket for the same heater hose repair before the owner letter, Navistar's reimbursement plan applies. Follow the reimbursement instructions included with the customer notification and keep repair invoices or payment records with your paperwork.
| Reimbursement | Reimbursement available |
|---|
Timeline
| November 18, 2016 | NHTSA published the recall |
|---|---|
| January 4, 2017 | Owner notification mailed |
| January 6, 2017 | Dealer notification began |
| January 6, 2017 | Dealer notification ended |
| January 6, 2017 | VIN-searchable in NHTSA's database — Check your VIN to see whether this recall applies to your specific vehicle. |
| January 6, 2017 | Interim owner notification (was planned for this date) |
Frequently asked questions
What is recall 16V837?
Recall 16V837 covers 20,673 2011-2016 Ic Bus Cesb, Casb, Ce, and Be school buses with a formed heater hose that can fatigue and split. Hot engine coolant can leak into the driver's foot area, raising the risk of burn injury or a crash.
What should I do if my 2011-2016 Ic Bus Cesb, Casb, Ce, or Be is on this recall?
Check your VIN to confirm your specific bus is included in recall 16V837. If it is, contact a franchised Ic Bus dealer to schedule the heater-hose replacement. Reference recall number 16V837 and Ic Bus recall number 16510 when you call.
Is the recall repair free?
Yes. Federal recall law requires the manufacturer to repair the defect at no cost, and Ic Bus dealers will replace the formed heater hose free of charge. Parts and labor are covered under recall 16V837.
What is the safety risk?
The safety risk is hot coolant entering the driver's foot area. If the hose splits while the bus is operating, the driver faces an increased risk of burn injury, and the spill can raise crash risk by interfering with safe operation.
Who can I call about Ic Bus recall 16V837?
Call Ic Bus customer service at 1-800-448-7825 for recall 16V837 questions. Have the VIN ready, and reference Ic Bus recall number 16510 when you speak with the dealer or customer service.
More information
| NHTSA campaign page | nhtsa.gov/vehicle-recalls/16V837000 |
|---|---|
| Ic Bus customer service | 1-800-448-7825 |
| NHTSA recall # | 16V837 |
| NHTSA recall # (full) | 16V837000 |
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 31, 2026. RecallNotify does not paraphrase NHTSA's consequence language; that text is reproduced as written above. Editorial standards →