Knocking or ticking noise that lasts 5 to 10 seconds after starting car

What is your question?

Car atarts fine but tgen noise starts and lasts 5 to 10 seconds. Then goes away. Doesn't happen everytime you start the car though. It did happen once during car running, and that was after running car and turning on heater to defrost windows during cold afternoon. I defrosted windows and went to turn heater off and after doing so heard the same noise for 5 to 15 seconds before it stopped. Im also having electrical issues with radio either sound off going off while listenening to radio or more recently, radio static while radio isnt even on. This happened yesterday morning.

What makes this problem better or worse?

Not sure

How long has your 2011 Ford Fiesta had this problem?

Off and on for few weeks with knocking and just yesterday with radio issue