[APIV]

Hello there! I have a second hand 453 Prime automatic gas w/31k miles. For the year Ive had lil Nomi, thus far 3 times backing out of the garage in morning (w/braking in between)seems to activate the abs(?) w/the same braking grinding/crunching sound effect, and then brakes almost lock. I’ll then put Nomi in park and try again a minute later w/ success. I will hear a movement such as a flap or what-not go into place in rear, then seems like it is when everything is in sync. Sometimes that movement sound is more delayed. I havent a clue as to what that regular start up sound is and if it’s associated w/ abs like behavior issue. Could this issue be a program gig, or something more sinister ? 💀