Lexus Lexus NX450H+ Recall R/2023/209: dC-DC Converter May Have Been Damaged During Production, Who Is Affected And What To Do
- Urgent
- How serious
- 21 Aug 2023
- Launched
- 891
- vehicles in the UK
- YGG27 (23SD-075)
- Manufacturer’s campaign code
Lexus recalled Lexus NX450H+ vehicles built between 16 November 2021 and 3 June 2022. 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. The dealer will replace the DC-DC converter. You won't usually pay for it.1
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.
DVSA's Original Wording
Concern: DC-DC converter may have been damaged during production Defect: 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. Remedy: Replace the DC-DC Converter.
Contains public sector information licensed under the Open Government Licence v3.0.
The Risk
If the fault occurs, the recall notice says it could increase the risk of a vehicle fire.
The Fix
The dealer will replace the DC-DC converter.
Are You Affected?
Lexus NX450H+ built between 16 November 2021 and 3 June 2022 may be included. Lexus estimates 891 vehicles in the UK. Enter your registration to check, then confirm by VIN with Lexus, because not every car in the date range may be included.
Which Car Is It?
Choose the make and model so we can match recalls to your car.
What To Do Now
- Check your car by registration above, then by VIN with Lexus.
- Book with any franchised Lexus dealer, quoting the campaign code YGG27 (23SD-075) or the DVSA reference R/2023/209. See how to get a Lexus recall fixed.
- Follow the letter's instructions until the repair is done. See can you drive a car with a recall?.
Related Recalls
| Launched | Vehicle and fault | Severity | Reference |
|---|---|---|---|
| RX300Affected vehicles are fitted with a high-pressure fuel pump which over time could develop a crack which could lead to a fuel leak and a risk of a vehicle fire | Urgent | R/2023/299 | |
| Lexus GS F, Lexus GS250, Lexus GS300H, Lexus GS450H and 6 moreFuel tank vent tube assembly could develop a crack which could lead to a fuel leak and a risk of a vehicle fire | Urgent | R/2022/345 | |
| Lexus GS, Lexus ISRisk of fire | Urgent | R/2016/080 | |
| Lexus GS 450H, Lexus GS300, Lexus GS350, Lexus GS460 and 6 moreRisk of fire | Urgent | R/2014/135 | |
| LexusPossibility of underbonnet fire | Urgent | R/1998/017 |
This is one of 42 Lexus recalls in DVSA’s data. The Lexus recall launched before it was R/2022/345 on 23 Jan 2023, for fuel tank vent tube assembly could develop a crack which could lead to a fuel leak and a…. The one launched after it was R/2023/280 on 12 Oct 2023, for due to the software programming for the DCM memory capacity there is a possibility that…. You can also see every Lexus recall, all recalls launched in 2023 and high-voltage battery recalls across every make.
Source: DVSA recall R/2023/209, launched 21 August 2023. Data updated 15 October 2026. How we grade urgency.
Sources
- The Code does not itself say repairs are free. GOV.UK guidance says "You will not usually have to pay for any repairs or parts under a safety recall." gov.uk Checked 15 Oct 2026.