I brought my car in to have the air conditioner checked. It was not working properly and was concerned as the upcoming temperatures were expected to be extremely hot. I am not one to take chances and wanted to be prepared just in case. Of course that morning when I drove to the service station it worked fine...go figure! It checked out okay and the service technicians were not able to find anything wrong with the air conditioner. However the service visit was not wasted. I had been noticing a "foul smell" when I adjusted the cool/warm air vent control. I mentioned this and it was also looked into. Turns out the cabin air filter was full of leaves, dirt and debris. It was replaced and, so far, all is well!! As instructed, I am to keep an eye on things.