NHTSA recall 21V253000
Electrical system › Propulsion system › Fuses, relays, contacts, and shunts
Blue Bird All American and 3 more
Reported Apr 12, 2021292 vehicles affectedBlue Bird Body CompanyMaker’s number R21BD-SB
The defect
Blue Bird Body Company (Blue Bird) is recalling certain 2018-2021 Vision and All American school buses. The electric drive train cannot detect isolation faults when the high voltage contactors are closed.
The risk
An undetected high voltage isolation can expose service personnel to high voltage, increasing the risk of injury.
The remedy
Blue Bird will notify owners, and dealers will update the Vehicle Control Unit software or install a different combination of High Voltage Power Distribution Unit hardware, free of charge. The recall began on May 22, 2021. Owners may contact Blue Bird customer service at 1-478-822-2242. Blue Bird's number for this recall is R21BD-SB.
Electrical system › Propulsion system › Fuses, relays, contacts, and shuntsElectrical system › Propulsion system › Shock protectionElectrical system › Software