NHTSA campaign 23V478000 · Toyota campaign 23TB07/23LB01
Lexus and Toyota Recall 23V-478: DC-DC Converter May Fail and Short Circuit
NHTSA recall 23V478000 (Toyota campaign 23TB07/23LB01) was reported by Toyota Motor Engineering & Manufacturing on July 12, 2023, with 43,442 vehicles potentially affected (per NHTSA). NHTSA's record lists the Toyota RAV4 Prime and Lexus NX450H+ for model years 2021–2022. Owners were notified on December 29, 2023, per NHTSA.
Updated daily from NHTSA's recall files
Is my vehicle included?
This page lists, by model year, the vehicles NHTSA's recall record names for campaign 23V478000 in the model years try.vin imports (1995 and later); NHTSA's own record can list more. A model year on the list doesn't mean every vehicle of that year is included, and some may already have been repaired.
To see whether a specific vehicle is included and still needs the repair, enter its VIN at nhtsa.gov/recalls.
Free VIN check: decode a VIN to see its year, make and model.
Key facts
- NHTSA campaign
- 23V478000 (also written 23V-478 or 23V478)
- Filed by
- Toyota Motor Engineering & Manufacturing
- Toyota campaign number
- 23TB07/23LB01
- Report received
- Potentially affected
- 43,442 vehicles (per NHTSA)
- Component
- Electrical System — Propulsion System — Dc/Dc Converter
- Owners notified
Repair completion: 94.89% (latest rate the manufacturer reported to NHTSA; dataset updated October 21, 2026)
NHTSA cautions against comparing completion rates across recalls or manufacturers. How try.vin reads them.
Vehicles listed for this recall
NHTSA's recall record lists these vehicles for recall 23V478000. try.vin imports model years 1995 and later, so NHTSA's own list can be longer. Model years with a try.vin recall page link to it. Build dates are NHTSA's range for a model year (per NHTSA); a vehicle built in that range is not necessarily included.
Lexus
Lexus NX450H+
Toyota
All Toyota recallsNHTSA's recall notice
As NHTSA's recall record states it for campaign 23V478000.
Defect description
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.
Safety consequence
A short circuit can cause the DC-DC converter to overheat, increasing the risk of a vehicle fire.
Manufacturer remedy
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.
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.
Sources
Official NHTSA notice for recall 23V478000
Campaign details come from NHTSA's recall files, which try.vin imports once a day. The plain-language subject and the completion rate come from the U.S. Department of Transportation's Recalls Data dataset. How try.vin reads recall data.