Please help with this difficult problem. I purchased a 2008 Land Cruiser used about a month ago. Everything seems to be working properly with the exception of the stereo. There is an intermittent problem where the sound system does not put music through the speakers. It seems to be worse when the car is sitting outside in the heat for a while. Sometimes the stereo works perfectly and other times I start the engine, no sound is produced on any setting (FM, AUX, CD, etc..). I try turning radio on and off and it doesn't seem to help. I also try turning off engine and starting again and no help. In fact, when you hit the volume dial the unit turns on, however, turning the volume dial left or right does not register any volume increase or decrease and no number appears to display the volume. All other options are available on the screen. I took it to dealer who replaced AMP and the issue has remained the same. Other times I start the engine (usually when its been in the garage) the unit works perfectly. Once, on a long drive it cut out mid-ride. I'm not sure if anyone has an idea of what could be wrong. Ideally, I don't want to purchase another stereo. Thanks for any suggestions!