Why gearshift will not get out of PARK

Hi kiaserio. Sounds to me like the tranny isn't getting a go signal from something on the checklist of things it needs to see before it will release. You are going to need to talk to someone who knows the sensors in that chain and who can test them. Sounds like it's time for a service visit, but if you just need a sensor switchout that shouldn't be a budget breaker. Good luck.

Where is that sensor located at? Having trouble same with mine

I had the same problem, come to find out, on my 1999 es300, a fuse controls the gear shift, wouldn't come out of park, put the fuse back in, and it worked fine. check the fuse box under the steering wheel.