Hatch issues 2021 LE

It shouldn't matter which SKS your car has. Sounds like the car is not detecting the open hatch. There should be a pressure switch somewhere that opens up when the hatch is open, but in your case is staying closed. I have no idea where the switch for this is, maybe someone smarter can enlighten us all.

 

Just guessing here, but they (Toyota) usually locate any electrical connections in the stationary portion of latch assemblies. Like interior lighting and "door open" sensors in door pillars. Earlier generations had this rear hatch switch/sensor in the lower stationary clasp portion, where it would get exposed to dirt and other junk that would eventually cause problems with the sensor or the solenoid release mechanism. There was also a manual release on the inside of the hatch to be used as a latch release when your 12V battery died, and the access panel to this area would expose all the other mechanicals for easy maintenance. I just looked at my rear hatch latch and the lower stationary clasp appears devoid of anything electrical. The upper latch assembly is contained within several plastic panels that can be popped off to inspect deeper. That might be a good place to have a look. Also, less of a concern, but there is a flexible portion of the wiring harness up at the top of the hatch near the hinges that is exposed to a twisting motion which could also affect sensor wiring continuity. Happy hunting.