No Cooling at All [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 warm air blows from the registers regardless of the temperature setting of the air conditioning system, the following factors may be the cause.
| Malfunction Status |
Factor |
No cool air comes out
- (Blower control is normal)
|
- Compressor
- Refrigerant pressure
- Refrigerant volume
- Cooler condenser assembly
- Cooling fan system
- Damper and damper link
- Evaporator temp. sensor (No. 1 cooler thermistor)
- Air conditioning pressure sensor power source circuit
- High inlet air temperature
- Cooling electric expansion valve (cooler expansion valve)
- Heating electric expansion valve (No. 2 cooler expansion valve)
- Low pressure magnetic valve (No. 1 magnet valve assembly)
- High pressure magnetic valve (No. 3 magnet valve assembly)
- Pressure regulator sub-assembly
- Ambient temp. sensor (thermistor assembly)
- Water cooling condenser refrigerant temperature sensor (No. 2 air conditioning thermistor assembly)
- External condenser refrigerant temperature sensor (thermostat assembly)
- Evaporator refrigerant temperature sensor (No. 4 air conditioning thermistor assembly)
- Heat pump ECU assembly
|