Alternator Belt May Overheat Seized Bearing – 2010-2023 Prevost H3-45, H3-45 VIP, X3-45, X3-45 Com, & X3-45 VIP

April 6, 2022 NHTSA CAMPAIGN NUMBER: 22V221000

Alternator Belt May Overheat Seized Bearing

An overheated alternator bearing can increase the risk of a fire.


NHTSA Campaign Number: 22V221000

Manufacturer Prevost Car (US) Inc.


Potential Number of Units Affected 6,641



Prevost Car (US) Inc. (Prevost) is recalling certain 2010-2023 H3-45, H3-45 VIP, X3-45, X3-45 Com, and X3-45 VIP vehicles. In the event of the alternator front bearing seizing, the alternator belt may continue to operate, causing the bearing to overheat.



Prevost will replace the alternator belt, free of charge. Owner notification letters are expected to be mailed June 3, 2022. Owners may contact Prevost customer service at 1-866-870-2046.



Owners may also contact the National Highway Traffic Safety Administration Vehicle Safety Hotline at 1-888-327-4236 (TTY 1-800-424-9153), or go to


Prevost Technical Publications

70 Affected Products


PREVOST H3-45 2010-2023
PREVOST H3-45 VIP 2010-2023
PREVOST X3-45 2010-2023
PREVOST X3-45 COMMUTER 2010-2023
PREVOST X3-45 VIP 2010-2023


3 Associated Documents

Defect Notice 573 Report

RCLRPT-22V221-1035.PDF 216.261KB



Recall Acknowledgement

RCAK-22V221-2838.pdf 645.877KB



Recall 573 Report-Amendment 1-04/12/2022

RCLRPT-22V221-4871.PDF 216.414KB



Latest Recalls Documents


1 Associated Investigation

Alternator Front Bearing Failure
Dated opened: May 13, 2021

NHTSA’s Office of Defects Investigation (ODI) is opening a Preliminary Evaluation after receiving a tip from a fleet safety manager concerning alternator front bearing failures that cause elevated temperatures within the engine compartment, resulting in the fire suppression system (FSS) activating, immediately shutting the engine down, and rendering the bus inoperable.

Review of Early Warning Reporting Data identified 9 field reports for Model Year (MY)2015 through MY2019 H3 and X3 Prevost buses, describing alternator failures in any of 3 alternators equipped on the bus. In some cases, a minor fire occurred damaging nearby electrical harnesses.

An immediate shut down of the bus can increase the risk of a crash or injury of passengers when transferring to another bus.

ODI is opening this investigation to evaluate the cause, consequence, scope and frequency of the alleged defect in the subject Prevost buses.


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