Campaign 25V-635

Brake interlock software may unintentionally activate the parking brake at any driving speed

Defect summary

Blue Bird Bus Company (Blue Bird) is recalling certain 2021-2026 Vision school buses. The brake interlock software may unintentionally activate the parking brake at any driving speed.

Consequence

A bus that stops suddenly without warning, increases the risk of a crash.

Remedy

Dealers will update the brake interlock software, free of charge. Owner notification letters were mailed November 18, 2025. Owners may contact Blue Bird customer service at 1-478-822-2242. Blue Bird's number for this recall is R25DS.

Source: NHTSA ODI recalls file, campaign 25V635000. Text as published by NHTSA.

Vehicles covered

2 product lines are covered

Owner complaints filed with NHTSA about brakes on these vehicles: 1, of which 0 involved a crash, fire, injury or death. Complaints are not verified by NHTSA.

Vehicles covered by campaign 25V-635
Make	Model	Model years	Complaints on this component
Blue Bird	Vision School BUS	2026	1
Blue Bird	Vision Transit BUS	2021 to 2025	0

Source: NHTSA ODI recalls and complaints files. Equipment, tire and child-seat campaigns list products, not vehicles.

Investigation

No NHTSA investigation is linked to this recall

Most recalls are started by the manufacturer. This one lists "Manufacturer" as its origin.

Before the recall

No service bulletins on this component preceded the recall

Distinct manufacturer communications on the same component group, make, model and model year in the 24 months before the report date.

Source: NHTSA manufacturer communications file.

Service bulletins

26V-467 Jul 20, 2026
Exhaust hanger cotter pin may contact the hydraulic brake line, damaging the line and causing a brake fluid leak
26V-466 Jul 20, 2026
Exhaust hanger cotter pin may contact the hydraulic brake line, damaging the line and causing a brake fluid leak
24V-048 Jan 26, 2024
Parking brake secondary release mechanism may malfunction and allow the lever to be released without pressing the release button
21V-778 Oct 6, 2021
Retaining clamp used to secure the hydraulic brake line near the engine may not have been installed, which could cause the brake line to rub which…
21V-285 Apr 22, 2021
Retainer was not properly seated in the SC-3 single check valve and may not provide source air isolation when pressure is applied
21V-284 Apr 22, 2021
Retainer was not properly seated in the SC-3 single check valve and may not provide source air isolation when pressure is applied