The problem
Toyota Motor Engineering & Manufacturing (Toyota) is recalling certain 2021-2022 RAV4 Prime and 2022 Lexus NX450h+ plug-in hybrid electric (PHEV) vehicles. The electric current rectifying module contained within the DC-DC converter may have been damaged during production, which can result in an electrical short-circuit.
The risk
A short circuit can cause the DC-DC converter to overheat, increasing the risk of a vehicle fire.
The fix
Owners are advised not to charge their vehicles when the ambient air temperature is below or expected to drop below 41 degrees Fahrenheit (5 degrees Celsius). Dealers will replace the DC-DC converter, free of charge. Owner notification letters were mailed December 29, 2023. Owners may contact Toyota's customer service at 1-800-331-4331. Toyota's number for this recall is 23TB07/23LB01.
Recall details
| NHTSA campaign | 23V-478 (23V478000) |
|---|---|
| Manufacturer number | 23TB07/23LB01 |
| Manufacturer | Toyota Motor Corporation |
| Component | Electrical system › Propulsion system › DC/DC converter |
| Report date | July 12, 2023 |
| Owners notified | December 29, 2023 |
| Vehicles affected | 43,442 |
| Initiated by | Manufacturer |
Vehicles covered
Plus 1 other model/year combinations not covered on this site.
Owner complaints about the electrical system
Frequently asked questions
Is the recall 23V-478 repair free?
Yes. Toyota dealers will fix the problem at no cost: Owners are advised not to charge their vehicles when the ambient air temperature is below or expected to drop below 41 degrees Fahrenheit (5 degrees Celsius). Dealers will replace the DC-DC converter, free of charge.
How do I know if my car is included?
Not every vehicle of the listed model years is affected — the recall covers 43,442 vehicles built in a certain window. Check your 17-character VIN with our VIN recall check or at nhtsa.gov/recalls.
Source: U.S. National Highway Traffic Safety Administration (NHTSA) — owner complaints through October 20, 2026, recalls and defect investigations; fuel economy from the EPA. Complaints are unverified reports and are not proof of a defect. How we rate model years.