Weak Blower Output [08/2023 - ]: Description

WARNING: This page is about a different car, the 2025 Lexus RX 450h+ and 2024 Lexus RX 450h+. However, it is still accessible from the selected car via links, so may be relevant.

If the airflow from the registers is weak regardless of the blower speed setting displayed on the radio and display receiver assembly, the following factors may be the cause.

Symptom	Factor
Airflow volume is constantly low Airflow volume sometimes becomes low	ECO mode control of air conditioning system is enabled Blower motor with fan sub-assembly malfunction Clogged clean air filter Clogged No. 1 cooler evaporator sub-assembly or heater radiator unit sub-assembly fins Evaporator temp. sensor (No. 1 cooler thermistor) not connected properly Aspirator pipe not connected properly