Hi there, I know this is an old ass post; But I'd like to help you out if you still need it (I'm the author of the mod lol). Your problem isn't really a problem lol, it's actually GTA V's stupid way of playing the audio. It only plays the door chime audio when the headlights are on. An easy solution is to turn the "Leave engine and lights on" option on in one of your trainers; Such as Simple Native or Menyoo to name a couple. Again, so sorry for the late reply.