P0A93 and P1123 solution?

welcome! start with a dealer code reading, or purchase a tech stream software product to get the correct codes.
if it is the battery, 100k in texas is not that unusual, but 200k is not the norm, although many do reach that and beyond.

 

Could possibly be the Brake Actuator problem which you would be lucky is an extended coverage issue. But yes a dealer is needed to get the warranty coverage.

If its the hybrid battery, well still dealer can be a good path. You may or may not be able to bargain (with Toyota USA not the dealer) for discount on the batt. You can walk if you don't get a deal, but this all takes a little time to sort out...BTW good TX battery services here on Prius Chat they will help you

Brake Actuator Assem - Warranty Enhancement | PriusChat

 

some codes can be retrieved at auto zone for free, if you want to start there. if they aren't detailed enough, then it's off to the dealer.

 

You're in luck being in the DFW area: Texas Prius Battery Replacement

 

what is the other reservoir?

 

No. All is not well.

You have air in the engine cooling loop. The 3-way coolant control valve is tied to the engine cooling loop. Replacement of this part drained some coolant out of the engine loop, and also introduced air into this loop. All of his is reinforced by the warning lights, inferred empty engine coolant overflow bottle, inferred low coolant level inside the radiator, and no statement that you bleed air out of the engine cooling loop (at least not completely).

Inverter pump handles the Inverter cooling loop. It is separate of the engine cooling loop. The radiator itself has 2 cooling cores. IIRC, the upper half is engine, bottom half is inverter. The inverter pump is easy to replace and easy to bleed air out of the inverter cooling loop, w/o affecting the engine cooling loop.

It appears you do not have an air lift tool, which makes refilling any cooling system, EASY. Read these two threads to bleed air out of the engine cooling loop.
How to replace engine coolant pump and thermostat | PriusChat
Changing engine coolant | PriusChat

 

IIRC, engine loop has 3 drain valves: radiator, engine block, CHRS tank. IIRC, one or two engine loop bleeder nipples; I don't have to bother with this b/c I use the Air Lift.

Your questions about multimeter, (electric) water pump, and others that you don't know you need to ask, are answered in the two links provided in post #10. FYI, people have used a multimeter or a jumper wire to force the CHRS pump to activate (a few seconds at a time, say 10-20) to help purge air out of the CHRS loop, whicb is a branch off the engine loop. I don't have to deal with this b/c of the airlift tool.

You will be better off getting a two (business) day subscription to Toyota TIS (Technical Information System), for $15. You will have access to the factory manual. It is an invaluable investment, just like getting the hacked Techstream and mini VCI. Pretty much any and all of your questions on "How do I ...," will be answered. Good diagrams, torque values, diagnosis codes, decent step by step instructions, trouble shooting trees; far superior to Haynes/Chilton. Supposedly if you start your subscription on a Friday (say 5PM), it will end on Monday (4:59PM). Copies of the manual are supposedly floating around in cyberspace. $15 is a small price to pay to for an authentic copy; who knows if the copies floating around have not been maliciously altered.

This person discovered how to save the CHM format into a PDF format. Toyota TIS download tips | PriusChat More power to you if you know how to preserve the CHM format.

 

Did you replace with an oem Toyota pump? They have been out of stock of that pump for about a month now

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