it is now 100 deg ++ in Boise and the A/C starts off fine but as soon as we turn a corner or hit a small bump the rider side switches from blowing cold air to blowing hot air. My wife rides in the back to keep from roasting. No dash warning lites come on or any alarms of any kind. Sometimes it stays cold for a 50 mile roundtrip and never switches to hot. The heater works OK in winter cold.