I've taken this on for a freind but I'm wondering if there is something I am missing here. The clarion radio cassette dropped into secure mode after a battery problem but thinks he may have entered the wrong code once (just once). Now it displays the '- - - -' awaiting a timeout/reset? (The manual says 1 hour). I've got this powered up in the house, aux and ign 12v permanently on, radio on, dashes displayed. Now been on >16hrs, still the same. Am I supposed to press some undocumented keys to wake it up - I'm expecting it to drop to 'code (in)' when it's ready.