2021 — 2025
2.5L I4 Hybrid (A25A-FXS) - NX350h AWD
Hybrid
While at a standstill in EV mode, listen for any unusual whirring or high-pitched whining from the hybrid battery cooling fan located under the rear seat. | Note: While these systems are highly reliable, it is worth checking that the ventilation intake is clear of dust and debris to ensure long-term longevity.
Find a quiet road, accelerate gently to engage the petrol engine, and check for any hesitant transitions between electric and petrol power. | Note: Transitions should be smooth; if you feel significant jerking, it is common to have a technician inspect the transmission software updates or mountings.
Check the infotainment screen operation by navigating through multiple menus rapidly while connected via Bluetooth or CarPlay. | Note: Lexus NX models have sophisticated software, so verifying that the interface feels responsive is a good way to ensure the software is up to date.
Turn the steering wheel lock-to-lock while parked on a flat surface to check for any clicking or binding sensations. | Note: In some AWD models of this generation, verifying the steering rack and suspension joints are quiet is a sensible precaution to ensure years of trouble-free driving.
Routine hybrid cooling fan filter cleaning.
Spark plug inspection and potential replacement; transmission fluid check.
Hybrid battery health assessment and thorough inspection of the inverter coolant system.
Ensure the logbook shows regular servicing at a Lexus dealership or a reputable hybrid specialist.
Check that the 12V auxiliary battery is in good health, as these are vital for starting the hybrid system electronics.
Verify that the hybrid battery cooling vents, typically located near the rear passenger seat, are free from obstructions.
Inspect the tyre condition, ensuring all four match for the AWD system to operate optimally.
Keep a record of the hybrid health check reports provided during scheduled services.
Estimated repair costs if issues arise
While Lexus hybrids are renowned for battery longevity, it is prudent to consider that, well into the vehicle's life, a battery health check is recommended. If a module replacement is eventually needed, you might want to set aside funds for this eventuality.
Because these vehicles utilize regenerative braking, the physical brake pads often last much longer than in standard cars. However, when the time comes to replace pads and discs, it is worth budgeting for high-quality OEM components to maintain that signature Lexus braking feel.
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Disclaimer: This report is generated with the assistance of AI analysis based on verified automotive data. While we strive for 100% accuracy, enthusiasts should always conduct physical inspections and consult service records. View Full Disclaimer