My 2009 Miata has gremlins. I will be driving along and the lights on the dash begin blinking and the radio will not turn up down off or change channels. I took it to the local dealer who said they can't do anything unless I bring it to them while it's happening. This is a random thing. It lasts for a few minutes and then everything is fine. It might only happen once every few months. I can't "make" it happen. Any ideas?