2023 — 2026
2.5L A25A-FXS I4 Hybrid (AWD)
Hybrid
Cycle through the infotainment screen functions while stationary; ensure the Lexus Interface system responds promptly to inputs, as some early fifth-gen units have experienced software lag or system freezing.
While driving at low speeds, listen for any subtle clunking or clicking sounds from the rear suspension, as the multi-link setup on these hybrids can occasionally display sensitivity to specific road surfaces.
Check this by idling in 'Ready' mode and observing the transition between electric and petrol power; it should be seamless. Hesitation during this transition might suggest a need for a software calibration check.
Examine the interior trim, particularly the door handle latches and electronic release buttons; ensure they operate smoothly as these unique e-latches are highly integrated and complex compared to traditional mechanical handles.
Usually marks the first significant major service; checking the health of the hybrid battery cooling intake is a good idea here.
Common interval for inspecting the hybrid transaxle fluid and checking the integrity of the regenerative braking components.
Typically when suspension bushings and secondary cooling system components are assessed for signs of wear.
Keep the rear seat air intake vents clean and free of obstructions to ensure the hybrid battery stays cool.
Regularly update the Lexus Connected Services software to ensure the navigation and multimedia systems operate at their best.
Schedule an annual hybrid system health check at your local Lexus dealer to keep your warranty and battery protection status up to date.
Monitor the tyre condition closely; the RX350h’s weight and electric torque can lead to uneven wear if alignment isn't checked every 15,000km.
Check the 12V auxiliary battery voltage during service intervals, as modern Lexus hybrids rely heavily on this for system boot-up sequences.
Estimated repair costs if issues arise
While these batteries are incredibly reliable, it is standard practice to set aside funds for potential out-of-warranty diagnostic testing or future capacity balancing to maintain peak fuel efficiency.
The e-latch system is quite sophisticated; if an actuator were to require replacement outside of warranty, it involves precision labour to align the electronic release mechanism.
If your model is equipped with AVS (Adaptive Variable Suspension), eventual maintenance of these actuators or dampers is something to plan for as the vehicle reaches higher mileage.
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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