Cooling System [10/2022 - ]: Description
WARNING: This page is about a different car, the 2025 Lexus RX 350h, 2024 Lexus RX 350h, and 2023 Lexus RX 350h. However, it is still accessible from the selected car via links, so may be relevant.
The cause of the malfunction may be the cooling system.
Check whether the grille is blocked, whether coolant is leaking, the radiator fan operating condition and whether coolant has frozen.
RELATED PARTS CHECK
| Area | Inspection |
|---|---|
| Grille blockage, coolant amount, coolant hoses, radiator fan | Check for overheating due to hybrid cooling system malfunction. |
| Inverter coolant temperature sensor (built-in inverter) | Check for temperature sensor malfunction. |
| Coolant freezing check | Check freeze frame values to determine whether the hybrid coolant was frozen when the DTC was stored. |