Vehicle Subsystem 1 campaign
Engine & Cooling
Domain Mapping Methodology: A single NHTSA recall campaign may involve more than one vehicle subsystem (such as electrical wiring affecting fuel delivery), so domain totals can exceed the total number of unique recall campaigns. Complaint and recall counts are grouped by broad vehicle system; component co-occurrence does not establish that an individual owner complaint is related to a specific recall campaign.
NHTSA Campaign #21V734000 Engine & Cooling
Affected Component: ENGINE AND ENGINE COOLING:ENGINE:ENGINE CONTROL MODULE (ECU/ECM):SOFTWARE
NHTSA Report Date: September 22, 2021
Safety Defect Summary: 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 loss of drive power.
Safety Risk / Consequence: A loss of drive power increases the risk of a crash.
Authorized Remedy Instructions: 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 this recall is 21TB07/21TA07.
Manufacturer & NHTSA Notes: 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 www.nhtsa.gov.
Source Data Notice: Campaign summaries, safety consequences, and remedy descriptions are direct text extracts published by the National Highway Traffic Safety Administration (NHTSA) Office of Defects Investigation.
Historical Reporting Note: Recall campaign counts are shown by model year and should not be interpreted as a vehicle reliability score. Campaigns may cover multiple model years, and newer model years naturally have had less calendar exposure time for new safety campaigns to be issued.
Safety recall campaigns on this page are associated with this make, model, and model year in NHTSA federal records. A campaign may apply only to certain vehicles based on production date, equipment, manufacturing details, or other campaign-specific criteria.
AutoUtility cannot determine whether a particular VIN is affected or whether a recall remedy has already been completed.
For vehicle-specific recall status, check the 17-digit VIN using NHTSA's official recall lookup or contact an authorized dealer. Campaign-specific remedy information shown above is reproduced from official NHTSA recall records.
Official NHTSA Safety Resources:
NHTSA Vehicle Safety Hotline: 1-888-327-4236 (TTY: 711)