Weak Blower Output [12/2023 - ]: Description
WARNING: This page is about a different car, the 2024 Lexus TX 550h+. 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
|
for Front air conditioning unit:
- ECO mode control of air conditioning system is enabled
- Blower motor circuit 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
for Rear air conditioning unit:
- ECO mode control of air conditioning system is enabled
- Rear blower motor circuit malfunction
- Clogged rear evaporator sub-assembly
|