The Recall Desk
HighNHTSA·21V734000·Announced 2021-09-22

2022 Toyota Prius engine control software may disable hybrid system

Toyota is recalling 2022 Prius and Prius Prime vehicles whose Engine Control Unit software may falsely trigger shutdown of the hybrid system, causing loss of drive power. Contact Toyota at 1-800-331-4331 for a free software update.

What this means for you

Real risk of harm even if no illness or injury has been reported yet. Stop using the product and follow the agency's guidance.

Our severity reasoning: This is a vehicle safety defect involving loss of drive power while driving, which significantly increases crash risk. However, no injuries or property damage has been reported in the source text, placing it at Score 3 under the rubric for risk-of-harm products without reported harm.

Plain-English summary

Toyota Motor Engineering & Manufacturing is recalling certain 2022 Prius and Prius Prime vehicles due to a defect in the Engine Control Unit (ECU) software. The software may falsely detect an error and shut down the hybrid system, resulting in a loss of drive power.

A loss of drive power while driving increases the risk of a traffic crash. Owners should contact Toyota customer service at 1-800-331-4331 to schedule a free software update with an authorized dealer. Owner notification letters were mailed on November 18, 2021.

For additional information, owners may contact the National Highway Traffic Safety Administration Vehicle Safety Hotline at 1-888-327-4236 (TTY 1-800-424-9153), or visit www.nhtsa.gov.

The recalled product

Product
TOYOTA PRIUS PRIME, PRIUS
Brand
TOYOTA
Manufacturer
Toyota Motor Engineering & Manufacturing
Category
Vehicle
Hazard
Affected units
8,411

Is your product affected?

Check your packaging against the codes below. If any of them match, the product is part of this recall.

Model numbers (2)

  • PRIUS PRIME
  • PRIUS

Distribution

Distributed nationwide across the United States.

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