I'm curious about the flashing orange light in the 4wd indicator located on the instument cluster. When I first got my Sequoia in January, when I pushed the 4wd button, the 4 green wheels would light up and the orange light would flash a few times and then go out. Now when I push the button, the 4 green wheels light up and 4wd works, but the orange button will usually keep flashing for a good minute or more. Once in a while it will flash just a few times and go out. Any ideas on why this would be? I'm pretty sure that I'm going to have to send it to the dealer, but I'd be interested in some ideas about any potential causitive factors. Thanks in advance.