Brasileiro0714

last year, at random times (not always) i'd get in my car, and just turning the key, turning on the battery, there would bea loud knocking sound coming from the dashboard. after a few seconds it would stop. A/C and the Heater isn't on, so i don't believe it to be a fan problem. i had brought it to ford but when i did i couldn't get the noise to come up again and it was fine for a year. Few days ago it started up again, same way. just turning the key. again not alyways happening. took a few start ups for my dad to hear what it was. he has no clue. neither do i and its bugging the hell out of me. does anybody know?

minivanracer

maybe the a/c doors resetting