Wheel will not turn

More than likely the pump has failed. Try getting the vehicle rolling and turn the wheel and see if you can get some movement out of it. If you can then you just have no power assist, and it is very hard to turn.

If the steering wheel is just locked, then you have an interlock issue, but this sounds more like a power steering issue.

So, lift the front tires off the ground and try to turn the wheel and see if you get any movement. If so, then you need to replace the pump.

https://www.2carpros.com/articles/jack-up-and-lift-your-car-safely

Here are some guides that will help with replacing the pump as I suspect that is the issue:

https://www.2carpros.com/articles/how-to-replace-a-power-steering-pump

I am attaching the info below from the manual but clearly that is not very detailed so the guide above will help.

Please let us know what you find. Thanks