Cooling System [06/2018 - 08/2021]: Description
WARNING: This page does not describe the selected car, but rather 6 other vehicles, including the 2024 Lexus ES 300h, 2023 Lexus ES 300h, 2022 Lexus ES 300h, 2021 Lexus ES 300h, and 2020 Lexus ES 300h. 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. |
RELATED DATA LIST
| Data List |
|---|
|