yaknamean

I have a weird problem with my 2004 RX330 (105K Mileage). After an oil change (not sure if they broke something) my Climate Control started acting very weird. There are times when I start the car and the Air Conditioner will work perfectly as well as the Navigation screen. I can freely press the Climate button on the Navigation screen and it shows the AC is working fine. All the buttons on the touch screen work as well to adjust the AC settings. All of a sudden after driving for about 5-10 minute the Climate Screen will pop-up with an Error message that reads "Check the connection of the Air Conditioner". The AC still runs, but I cannot turn the AC off. I cannot press the OFF, I can't adjust it from the Climate menu because of the error message. The only way I can turn off the AC now is if I turn the car off completely. If I turn the car immediately back on the AC will be off and I can't turn it back on at my will. If I press the Climate button on the Navigation screen it will still read: "Check the connection of the Air Conditioner" and the AC will not work, the AUTO button nor the RECIRCULATE AIR button NO BUTTONS will work. Keep in mind, the weirdest part is, when the "Check the connection of the Air Conditioner" message pops up on the climate control screen, the radio's AUDIO does not work either. The radio can be turned on and off, I can change stations, but you cannot hear any audio. Sometimes the AC will come back on while I drive for a while and the climate control will no longer have the "Check the connection of the Air Conditioner" error message and the Climate settings will come up again. And the radio will have sound again. It's like the car has a mind of it's own. It works when it wants to, and does not work when it doesn't want to.

I checked all the fuses on the Fuse Box, and under the driver wheel Fuse Box. And the fuses seem fine. What do you think it could be?