Lexus LEXUS NX450h+ recall: DC-DC converter may have been damaged during production
- What's wrong
- The plug-in hybrid system of the subject vehicles includes a DC-DC converter that reduces the voltage of the electricity from the Hybrid Vehicle (HV) battery in order to charge the vehicle�s 12V battery. Contained within the DC-DC converter is a current rectifying module that is…
- What to do
- Contact a Lexus dealer to book the free repair. Replace the DC-DC Converter.
What’s wrong
The plug-in hybrid system of the subject vehicles includes a DC-DC converter that reduces the voltage of the electricity from the Hybrid Vehicle (HV) battery in order to charge the vehicle�s 12V battery. Contained within the DC-DC converter is a current rectifying module that is installed on the circuit board. Some of these modules may have been damaged during production by the supplier and could fail so creating a short circuit. This allows current from the 12V battery to continue to flow through the module and the module will generate heat. Under certain conditions if excessive heat is generated components within and outside the DC-DC converter could sustain thermal damage increasing the risk of a vehicle fire.
The fix
Replace the DC-DC Converter.
Vehicles affected
| Model | Built from | Built to | Vehicles |
|---|---|---|---|
| LEXUS NX450h+ | 16 Nov 2021 | 3 Jun 2022 | 891 |
How to check your vehicle
Use the official DVSA checker with your registration number to see if your exact vehicle is included. If it is, the manufacturer should have written to the registered keeper. The repair is free, even if you bought the vehicle second-hand.
Updated 21 August 2023. This page summarises an official notice. Details can change – always follow the official notice.