Recall 11V523 covers 1,300 2006 and 2008-2011 Orion Orion Vii Li-Ion Hybrid and Ess buses for high-voltage battery isolation failure. BAE repairs are free.
Orion is recalling 1,300 2006, 2008, 2009, 2010, 2011 Orion Vii Li-Ion Hybrid and Orion Vii Li-Ion Ess transit buses because debris and moisture can breach electrical isolation in the high-voltage battery pack. That failure can discharge stored battery energy and cause smoke, melting, charring, and fire risk; the Orion dealer repair will be free once available.
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What's wrong?
The Li-Ion energy storage system is the high-voltage battery pack that stores electrical energy for the hybrid drive system. In the 2006, 2008, 2009, 2010, and 2011 Orion Vii Li-Ion Hybrid and Orion Vii Li-Ion Ess transit buses, that battery pack supports the electric side of the bus while the hybrid system manages power flow.
The problem starts when particulate debris builds up inside the Li-Ion storage system over time. When that debris is present with moisture, it breaks down the electrical isolation that is supposed to keep high voltage contained where it belongs. If the isolation is breached at both ends of the battery, the debris and moisture form a conductive path through the pack.
There is no warning sign before failure. The filing does not list a dashboard message, sound, smell, or change in bus operation that gives the driver advance notice before the isolation problem develops.
Who's affected?
Covers the Orion Vii Li-Ion Hybrid and Orion Vii Li-Ion Ess bus variants across 2006 and 2008 through 2011, all tied to the battery component.
| 2010 Orion Orion Vii Li-Ion Hybrid | battery |
|---|---|
| 2008 Orion Orion Vii Li-Ion Hybrid | battery |
| 2009 Orion Orion Vii Li-Ion Hybrid | battery |
| 2011 Orion Orion Vii Li-Ion Hybrid | battery |
| 2006 Orion Orion Vii Li-Ion Ess | battery |
| Units affected | 1,300 |
The year and model narrow the scope, but the VIN decides. Check your VIN to confirm whether your specific bus is included.
What's the safety risk?
Stored battery energy can discharge unintentionally, creating smoke, melting, charring, and fire risk. If you notice smoke, burning smells, heat, or visible battery damage, stop using the bus and call the service provider before moving it. Repair will be free at any franchised Orion dealer once available.
What should I do?
- Check your VIN to confirm your Orion Vii Li-Ion Hybrid or Orion Vii Li-Ion Ess bus from 2006, 2008, 2009, 2010, or 2011 is included in this recall.
- Contact Orion customer service at 1-905-403-1111 to confirm the current repair path for your bus.
- Ask whether BAE Systems is still handling the free Li-Ion energy-storage-system repair that addresses debris and moisture inside the high-voltage battery pack.
- Reference recall number 11V523 when you call, and bring the recall notice if Orion mailed one.
- Keep the bus out of service if you see smoke, melting, charring, or any battery-pack damage before the repair is complete.
What happens at the repair
What is known is narrow: Orion notified owners, and BAE Systems handles the recall repair free of charge. The filing does not describe the exact shop procedure for the lithium ion energy storage system, so ask the service desk what BAE Systems will inspect, clean, replace, or test before the bus is released. Parts and labor are covered under the recall once the repair is open for your VIN. The repair process should address debris and moisture conditions that affect electrical isolation in the battery pack.
Timeline
| October 28, 2011 | NHTSA published the recall |
|---|---|
| November 16, 2011 | Owner notification mailed |
Frequently asked questions
What is recall 11V523?
Recall 11V523 covers 1,300 2006, 2008, 2009, 2010, 2011 Orion Vii Li-Ion Hybrid and Orion Vii Li-Ion Ess transit buses with BAE lithium ion energy storage systems. Debris and moisture can breach battery isolation, causing stored energy discharge, smoke, melting, charring, and fire risk.
What should I do if my 2006, 2008, 2009, 2010, 2011 Orion Vii Li-Ion Hybrid or Orion Vii Li-Ion Ess bus is on this recall?
Check your VIN to confirm whether your specific transit bus is included in recall 11V523. If it is, contact Orion or the Daimler Buses North America recall line at 1-905-403-1111 and reference recall 11V523. BAE Systems performs the repair free of charge.
Is the recall repair free?
Yes. Federal recall law requires the manufacturer to repair the defect at no cost, and the recall remedy says BAE Systems performs the Orion battery system repair free of charge. The safety recall began in November 2011.
What is the safety risk?
The safety risk is stored battery energy discharging when debris and moisture breach electrical isolation in the high voltage battery pack. NHTSA campaign 11V523 ties that defect to smoke, melting, charring, and fire risk. The repair path is the free BAE Systems recall repair.
What if I bought this Orion transit bus used?
The free recall repair still applies. Recall coverage follows the VIN, not the first owner. Check your VIN to confirm whether the bus is included, then give recall number 11V523 to the Orion service contact or Daimler Buses North America recall line.
More information
| NHTSA campaign page | nhtsa.gov/vehicle-recalls/11V523000 |
|---|---|
| Orion customer service | 1-905-403-1111 |
| NHTSA recall # | 11V523 |
| NHTSA recall # (full) | 11V523000 |
Source documents
-
Download Recall Document (PDF) (PDF) - Download Recall Investigation Document (PDF) (PDF)
- Download Recall Document (PDF) (PDF)
- Download Owner Notification Letter (PDF)
- Download Quarterly Report (PDF)
- Download Defect / Noncompliance Notice (PDF) (PDF)
- Download Recall Acknowledgement (PDF)
This article is generated from NHTSA's primary recall filings and reviewed against the source on June 2, 2026. RecallNotify does not paraphrase NHTSA's consequence language; that text is reproduced as written above. Editorial standards →