The 56-year-old woman was struck by a car in a Hungry Jacks car park at the Grote Street and West Terrace intersection in Adelaide on March 4 at 6:15am.
The Ascot Park woman was taken to the Royal Adelaide Hospital but she died from her injuries on Thursday this week.
Police say the car fled the scene following the crash and are continuing investigations into who was behind the collision.
The woman’s death marks the 39th life lost on South Australian roads this year.
Anyone with any information on the crash has been asked to contact police.