Typical Malfunction Thresholds
WARNING: This page is about a different car, the 2025 Lexus RX 450h+, 2025 Lexus RX 350h, 2024 Lexus RX 450h+, 2024 Lexus RX 350h, and 2023 Lexus RX 350h. However, it is still accessible from the selected car via links, so may be relevant.
COLD START MONITOR
| Engine coolant temperature sensor value change | Less than 5°C (9°F) |
SOAK MONITOR
| Difference between current engine coolant temperature sensor value and previous engine coolant temperature sensor value when engine stopped | Less than 5°C (9°F) (Varies with engine coolant temperature of last trip engine stop) |