2015 RX 350 Air conditioner Problem

[rfcbuf]

2015 RX 350 air conditioner seems to cool erratically. Occasionally on super hot days, it won't work at all. What's going on? If I take it to the dealer it may work. Can the dealer determine why it dosn't cool on some days. What controls the cooling is it a thermostat that may be failing on occasion. 

[Brickwall]

Your dealership would be able to help you more and would definitely be able to figure it out. But, to me it sounds like you probably have a leak in your a/c system somewhere causing you to be just a little low on refrigerant, which could give you erratic operation based on ambient temperatures. The thermostat only controls engine temperature 😊 

[glerobi]

On 7/2/2018 at 4:24 PM, Brickwall said:

Your dealership would be able to help you more and would definitely be able to figure it out. But, to me it sounds like you probably have a leak in your a/c system somewhere causing you to be just a little low on refrigerant, which could give you erratic operation based on ambient temperatures. The thermostat only controls engine temperature 😊 

There is another thermostat that controls the cabin air temperature.