Pauline Potter/Facebook

Pauline Potter -- who starred in season 3 of "My 600-lb Life" -- has died.

Pauline's son Dillon confirmed his mom's passing in a moving YouTube video , saying she died Thanksgiving Day. Pauline Potter/Facebook

Her death comes just months after she and Dillon were involved in a car accident, which totaled their vehicle. According to Dillon, the incident occurred in January and left his mom with broken ribs and other injuries ... she was still suffering those injuries during her last moments. Pauline Potter/Facebook

Dillon recalled the accident ... "We were driving on a dark two-lane highway, and there was a truck and trailer that was stopped in the middle of the road. We did not see it because they didn’t have any lights on."

He continued ... "The

See Full Page