My '07 RX350 is having some AC problems. I had the compressor changed about 2 years ago & the evaporator coil changed about a year ago. It started out that I had a small, short whine noise when it got really hot outside, like 97*, & the AC would quit blowing cold. If you turned the AC off, waited a minute or so, and turned it back on, it would work fine. My mechanic couldn't find anything wrong. Now it has progressed to no whine noise, but if I run a bunch of errands, it will not blow cold when I restart the car-again, if I turn it off, wait, & turn it back on, it works fine. And now it will randomly blow warm air in the middle of me riding around-same deal-turn off, wait, turn on & it's fine again. Anyone have this problem? Any ideas what this could be?
I am so nervous to mess with the evaporator coil again as that mechanic cracked the dash all up! So hoping it is not that!