campaign

NHTSA Recall 21V734000 — Toyota Motor Engineering & Manufacturing

Official NHTSA recall 21V734000 covers 2 vehicle applications. Review the reported defect, safety consequence, remedy, and VIN-check next step.

Official identifiers and sources shown at claim level Data refreshed 8/28/2026

answer

What this official recall record says

NHTSA campaign 21V734000 was received on 2021-09-22 and is associated with 16 source rows covering 2 listed vehicle applications. The manufacturer shown in the record is Toyota Motor Engineering & Manufacturing.

applications
2
campaign number
21V734000
potential units
8,411
manufacturer campaign number
21TB07 / 21TA07

SOURCES

safety

What the owner should do next

Check the VIN in the official recall lookup. If the campaign applies, contact an authorized dealer about the remedy; recall remedies are normally handled through the manufacturer program. If warning signs or unsafe operation are present, stop driving and arrange safe transport.

do not drive
No
park outside
No
vin check required
Yes
recommended channel
dealer

SOURCES

causes

Defect described in the recall record

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.

campaign number
21V734000
official record
NHTSA recall

safety

Safety consequence in the official record

A loss of drive power increases the risk of a crash.

do not drive
No
park outside
No

repair options

Official remedy

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.

vin applicability required
Yes
dealer confirmation required
Yes

applicability

Vehicle applications listed for this campaign

The normalized NHTSA rows contain 2 applications across 1 makes and 2 model labels. This list describes campaign records, not confirmation that an individual VIN is open or unrepaired.

listed application count
2

components

  • ENGINE AND ENGINE COOLING:ENGINE:ENGINE CONTROL MODULE (ECU/ECM):SOFTWARE
  • HYBRID PROPULSION SYSTEM

applications

  • TOYOTA
  • TOYOTA

SOURCES

methodology

Limits of this database record

Campaign applicability and remedy completion are VIN-specific and can change. This page summarizes the official campaign record; it does not inspect the vehicle, determine whether a symptom is caused by the recalled defect, or replace current instructions from NHTSA or the manufacturer.

source rows
16
vin check required
Yes
individual vehicle verified
No