AFTER MANUALLY TURNING OFF THE RADIO, TURNING OFF THE CAR, REMOVING THE KEY FROM THE IGNITION, EXITING THE CAR, LOCKING AND ARMING THE CAR'S ALARM, THE RADIO WILL TURN ITSELF BACK ON. IN SOME CASES IT HAS DONE THIS BEFORE WE HAVE EVEN WALKED 20 FEET FROM THE CAR, IN OTHER CASES IT HAPPENS UP TO 2 HOURS AFTER EXITING (AND LOCKING) THE CAR. IT HAPPENS MORE THAN 75% OF THE TIME. SHORTLY AFTER THE FIRST TIME WE OBSERVED THE SYMPTOM, THE CHECK ENGINE LIGHT CAME ON AND STAYED ON, BUT THE DEALERSHIP CLAIMED IT WAS NO LONGER ON AFTER I DROPPED THE CAR OFF (AND IT WAS DEFINITELY ON WHEN I EXITED THE STILL RUNNING CAR FOR THEM TO DRIVE INSIDE) AND THAT THERE ARE NO ERROR CODES IN THE HISTORY. THEY CLAIM THEY CANNOT REPRODUCE THE RADIO ISSUE. *TR