Did I short/blow my water pump???

This observation means that you have air in the CHRS loop. So you need to run the CHRS pump more, to make sure the canister is full and to move any remaining air into the engine where you can clear it into the radiator by revving up the motor to force the engine water pump to circulate the fluid vigorously.

Run the CHRS pump for 30 seconds at a time while the Prius is IG-OFF, while paying attention to the sound produced by the pump motor and the gurgling. Also observe the radiator fluid level and refill as the level drops.

The gurgling should go away when you've moved the air bubbles out of the CHRS. Then make the Prius READY and aggressively rev the engine, with the cabin heat turned to MAX HEAT and the fan on full blast, to move the air into the radiator. Fill the radiator as needed.

You may find my posts #22 and #42 in the following string, as well as the surrounding discussion, to be of interest. My post #22 was the first mention of the technique to run the CHRS pump via application of a jumper wire to the relay socket. This was written at a time prior to Mini VCI being easily available.
Changing engine coolant | Page 2 | PriusChat

 

Put it in Inspection mode and let it idle with the car jacked up in the front and the CAP OFF. If the top of the rad is not higher than the cylinder head it will not work. Air bubbles go to the highest point. You can rev it till the cows come home and you won't get air out of it without the rad higher. All you'll do is blow out coolant out of the rad.

May have to let it run a few hours in idle. You'll know its working if you see the coolant level in the rad go lower. That's coolant filling in the now gone air pockets. Run the heat for a while.

Feel the upper and bottom rad hose. Squeeze them.

 

Good...keep checking the rad level as it moves around. Real pia that loop.

And yes the car seems to lurch real bad in park upon engine start. Does it all the time. Its normal. Its the the engine and the mg's starting up and that's alot of mass up front to jump to it at the same time. Alot going on instantly. You only notice it cause your sitting still. And not expecting it.

 

yeah stop doing that. Put the car in inspection mode and it will idle all day.

 

Regarding lurching, the parking brake should be fully engaged. Then the car will not go anywhere.

The parking brake should always be fully set when you are running the engine while working on the vehicle. For that matter, the brake should always be fully set when the car is parked.

It seems that most of the air is out of the engine coolant system if the radiator fluid level does not drop while the engine is running.

Since your office commute appears to be short, I think you should just bring the coolant jug with you, and check the radiator level after the engine has cooled down, both in the morning and in the afternoon before you drive the Prius. Keep checking until the radiator level remains constant.

 

Are you are using the upper radiator bleeder valve? That's what helped me get the last air out. I put the tube on the outlet, open the valve, squeeze the hoses, let coolant rise in the tube to the level in the filler neck, add more coolant if needed, close the valve, then pinch off the short column of coolant and dump the tube contents into the radiator. It did that on two or three mornings until it stabilized. Good luck with it.