Recall 25V635 covers 150 2021-2026 Blue Bird Vision School Bus and Vision Transit Bus vehicles for brake software. Blue Bird dealer repair is free.
Blue Bird is recalling 150 2021-2026 Vision School Bus and Vision Transit Bus vehicles under recall 25V635 because brake interlock software can activate the parking brake at any driving speed. A sudden stop without warning increases crash risk, and Blue Bird dealers will complete the recall repair free of charge.
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What's wrong?
The brake interlock software on 2021-2026 Blue Bird Vision School Bus and Vision Transit Bus vehicles controls when the parking brake is allowed to engage. On buses with this feature, the interlock is tied to conditions such as the entrance door opening or the driver seat belt being unbuckled. Its normal job is to keep the bus from moving when those conditions happen at a stop.
On affected buses, the software did not check vehicle speed before applying the parking brake. If the entrance door opens or the seat belt is unbuckled while the bus is moving, the system can command the parking brake at any speed. That creates unexpected braking instead of waiting for the bus to be stopped.
There is no warning sign before failure. The issue is in the software logic, so the driver will not hear, smell, or feel a separate part wearing out before the parking brake engages.
Who's affected?
Covers Vision Transit Bus model years 2021 through 2025 plus the 2026 Vision School Bus, all tied to battery interlock software.
| 2026 Blue Bird Vision School Bus | Software |
|---|---|
| 2024 Blue Bird Vision Transit Bus | Software |
| 2023 Blue Bird Vision Transit Bus | Software |
| 2022 Blue Bird Vision Transit Bus | Software |
| 2021 Blue Bird Vision Transit Bus | Software |
| 2025 Blue Bird Vision Transit Bus | Software |
| Units affected | 150 |
| 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 your specific bus is included.
What's the safety risk?
The brake interlock software defect creates a sudden stop risk without warning, which increases the risk of a crash. There is no warning sign before the sudden stop. Treat any unexpected braking as a reason to stop using the bus and call the dealer. Repair is free at any franchised Blue Bird dealer.
What should I do?
- Check your VIN to confirm whether your 2021-2026 Blue Bird Vision School Bus or Vision Transit Bus is included in this recall.
- Contact your nearest franchised Blue Bird dealer to schedule the free brake-interlock software update that fixes the unintended parking-brake activation.
- Bring the recall notice if Blue Bird mailed one. If not, reference recall number 25V635 and Blue Bird recall R25DS when you call.
- Drive cautiously until the software update is complete. Leave extra following distance because the bus can stop suddenly without warning.
What happens at the repair
At the dealer, a Blue Bird technician updates the brake interlock software so the parking brake does not activate unintentionally while the bus is moving. The software update is free under the recall, and parts and labor are covered. Blue Bird uses its standard reimbursement plan for owners who paid for a related brake interlock software repair before the recall notice. Keep repair invoices and payment records, then contact Blue Bird customer service or ask the service desk how to submit the documentation.
| Reimbursement | Reimbursement available |
|---|
Timeline
| September 23, 2025 | NHTSA published the recall |
|---|---|
| November 18, 2025 | Owner notification mailed |
| November 21, 2025 | Dealer notification began |
| November 21, 2025 | Dealer notification ended |
| November 21, 2025 | Interim owner notification (was planned for this date) |
Frequently asked questions
What is recall 25V635?
Recall 25V635 covers 150 2021-2026 Blue Bird Vision School Bus and Vision Transit Bus vehicles with brake interlock software that can activate the parking brake at driving speed. A sudden stop without warning increases crash risk. Blue Bird dealers will update the software for free.
What should I do if my 2021-2026 Blue Bird Vision School Bus or Vision Transit Bus is on this recall?
Check your VIN to confirm your specific bus is included in recall 25V635. If it is, contact a franchised Blue Bird dealer to schedule the brake interlock software update. Reference Blue Bird recall number R25DS 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 Blue Bird dealers will update the brake interlock software free of charge. Parts and labor are covered for included buses.
What is the safety risk?
The safety risk is a sudden stop without warning. The brake interlock software can activate the parking brake at any driving speed, which increases the risk of a crash. Confirm the VIN, then schedule the free software update with a Blue Bird dealer.
When were owners notified about recall 25V635?
Blue Bird mailed owner notification letters on November 18, 2025. If you manage a school or transit fleet and did not receive a letter, check each VIN and contact Blue Bird customer service at 1-478-822-2242 or a franchised dealer with recall number R25DS.
More information
| NHTSA campaign page | nhtsa.gov/vehicle-recalls/25V635000 |
|---|---|
| Blue Bird customer service | 1-478-822-2242 |
| NHTSA recall # | 25V635 |
| NHTSA recall # (full) | 25V635000 |
Source documents
-
Download Quarterly Report (PDF) - Download Owner Notification Letter (PDF)
- Download Owner Notice (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 19, 2026. RecallNotify does not paraphrase NHTSA's consequence language; that text is reproduced as written above. Editorial standards →