TOYOTA 2022: ENGINE AND ENGINE COOLING:ENGINE:ENGINE CONTROL MODULE (ECU/ECM):SOFTWARE

Recall Insight

This NHTSA action (record #21V734000) was formally reported on September 22, 2021. The NHTSA does not publish a hazard classification for its recalls, so this record carries no agency severity grade, with a current status of Active. Toyota is listed as the recalling firm. The number of affected units is not disclosed in the agency filing, which is common for drug and food recalls where lot-level tracking supersedes unit counts.

The documented reason for this recall is: Toyota Motor Engineering & Manufacturing (Toyota) is recalling certain 2022 Prius and Prius Prime vehicles. The Engine Control Unit (ECU) software may falsely detect an error and shut down the hybrid system, causing a … The specific hazard cited in the filing is: A loss of drive power increases the risk of a crash.. Distribution data in the federal record shows the product reached: United States. Distribution scope directly affects the consumer exposure window and determines whether a recall remains regional or escalates into a nationwide advisory. The remedy documented by the agency is: Dealers will update the ECU software, free of charge. Owner notification letters were mailed November 18, 2021. Owners may contact Toyota customer service at 1-800-331-4331. Toyota's number for th… - consumers holding this product should act on that instruction rather than relying on general guidance.

Within the same product category the archive holds 6 closely related recalls, 4 from NHTSA - clustering in a narrow category often points to a systemic quality-control or supplier issue rather than a one-off defect. Always verify the recall number against the official agency record before acting.