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Eric, Automotive Repair Shop Manager
Category: Lexus
Satisfied Customers: 32043
Experience:  20+ yrs. experience as repair shop manager and technician.
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The temp in the cabin is always much gher than outside.

Customer Question

The temp in the cabin is always much higher than outside. Let's say the outside temp is 65, nice and pleasant, no sun. The temp inside is about the same (I ended up having a thermometer inside), I'm in slow traffic on highway and my window is about 1/3 open, in about 15 minutes the window is wide open (I'm the only one) and the temp about 85. Parked in the garage. Came back one our later, open the door, it's still hot inside. Never had this problem with any car before even the cheapest one. What could be the problem?
Submitted: 1 year ago.
Category: Lexus
Expert:  Eric replied 1 year ago.


With AC, there are a lot of possible causes to only blow warm air:

refrigerant level low due to leak

weak to failed compressor

restriction in expansion valve

restriction in the condenser

condenser fan not working

climate control panel fault

temperature blend door actuator not working

faulty ambient temperature sensor

faulty ac pressure transducer

no power to the compressor

As you can see there are several potential causes and will need to be professionally diagnosed starting with the ac high and low pressures, and checking the compressor operation, then go from there

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Customer: replied 1 year ago.

I just discovered we discussed this before. Please disregard. I apologize.

Expert:  Eric replied 1 year ago.


Ok, that is fine