This warning light comes on when I start the engine, flashes a few times and then stays on continually. The dealer says he's busy and can't check it out for a couple of days. We want to leave for Florida tomorrow. A friend tells me to disconnect, then reconnect the battery (something about doing this causes something to reset). I am quite reluctant to touch this car to do anything without official sanction -- warranty problem?? other problem?? screws up the radio presets?? Any suggestions?? Jim.