NiMH
Lexus UX 250h Hybrid Battery (2019-2024)
The Lexus UX 250h Hybrid Battery (2019-2024) is the high voltage battery in the Lexus UX 250h (2019-2024).
Specifications
| Chemistry | NiMH |
|---|---|
| Nominal voltage | 216 V |
| Modules | 30 |
| Module voltage | 7.2 V |
| Cooling | air (battery cooling blower assembly, per DM) |
| Location | Cabin area under the rear seat, concealed by carpet |
Cars That Use It
- Lexus UX 250h 2019-2024 FWD and AWD (rear e-motor) Run the checklist
What Goes Wrong
Reported failures, each from a source listed below, as of October 7, 2026.
Symptoms
- The Lexus dismantling manual says a ground-fault monitor watches for high-voltage leakage to the metal chassis while the vehicle is running; if it detects a fault, the master warning light comes on with a hybrid system warning message on the display. (techinfo.toyota.com: L-DM-015-D.pdf, 2026-10-07)
- The 2019-2022 UX 250h Warranty and Services Guides schedule a periodic check of the HV battery cooling intake filter as a maintenance item. (assets.sia.toyota.com: L-MMS-19UX250h.pdf, 2026-10-07)
Warranty
Lexus's 2019 UX 250h Warranty and Services Guide lists the hybrid battery under the Hybrid System Warranty for 96 months or 100,000 miles, while the 2020 and 2022 UX 250h guides list a separate Lexus Hybrid Battery Warranty of 10 years or 150,000 miles from the in-service date, whichever occurs first. (assets.sia.toyota.com: L-MMS-20UX250h.pdf, 2026-10-07)
Get This Pack Tested
Do not open it yourself. The pack can hurt you with the car switched off.
Last updated October 7, 2026. Failure and recall notes are as of that date. Spotted a mistake, or speaking for a maker? Report an error.
Hybrid Battery Test is independent. It is not affiliated with, sponsored by or endorsed by Lexus. Names and part numbers are used only to identify the vehicle and the part.