My car will only stay on for a few seconds then shut down. When that happens the interior lights wont come on. A friend of mine told me to take down the bcm & turn the key forward & unplug it then plug it back up & itll run fine. I did & it worked. but I don't want to keep doing that every time to turn on my car. ...What can I do to fix it right? Any advice will be appreciated. thank you for looking.