the dash clock stays on after car is turned off and the door dinger

Problem fixed . When you turn off the car try to turn the key half way take the key out open the door if the clock turns off you are good all powers are off if not try again until clock turns off . I had the same problem I even changed the battery didn't help I tryed this it helped . I am sure while your driving you can take your key off of ignition with out shutting the car off . So try this I am sure it is going to work 100% good luck