Trouble in 3s. Water pump/drive shaft and brakes.

I've taken on repairing my mother in laws '07 Prius after a drive-shaft broke and once at the dealers the quote was heading towards £2k with the worn discs/pads and leaking water pump added on.
The discs and pads were a breeze and a drive shaft should be with me on Monday (it broke off in the outer cv, probably due to being hammered into the hub after a backstreet garage changed the spit boot) but the water pump or should i say coolant is proving tricky. I drained coolant from the rad and back of the petrol engine block and got about 2.5l or 3 quarts. I then removed the leaking pump, virtually no coolant came out of the pump housing and I fitted the new pump. To refill the system I open the breather on the rad and slowly replaced all the fluid. I also refilled the petrol engine reservoir and put a drop in the inverter reservoir but that had not drained out. I reckon near enough the same amount went back in as came out. I read a post by Pat Wong and started the petrol engine in inspection mode and it seemed to run fine but just cut out after around 4-5 mins. All along the VSC, ABS, yellow exclamation mark in circle and yellow square with sliding car in warning lights were on but not the big red triangle or yellow engine light. Also, the red exclamation in circle (handbrake?) will not go off. The inspection mode procedure still works but there seems a long delay with chirping sounds before the engine fires. It still runs fine but again cuts out after a few mins. Could it be shutting off due to brake/driveshaft issues or has air crept into the inverter? Maybe disconnecting the battery for five mins will reset the lights?

 

Thanks Patrick, that makes sense. Post shaft breakage the car was towed to the dealer with an 'A' frame so with only one shaft rotating it may have sent skid signals. Anyway, I'll get looking into resetting the DTC.
Thanks again.

 

But will the engine cutting out and delayed start up be related to this? And yes, I'm in the UK and fix old Italian cars for a living, modern car mechanics or should i say electronics scare me. Give me a pair of DCOE Webers to sort and I'm happy.

 

Tell me about it! This is my mother in laws car and only took it on due to the £2k bill and brake discs/pads, pump and drive shaft are fairly traditional. Surprisingly, the rear brake set up is very similar to 105 series '63-'78 Alfa Romeo. I have a feeling most cars post 80s are designed to be short lived and primarily dealer maintained. I cant imagine trying to restore one of these in 40 years time unless the 3D printer comes the shop tool of the future. I diagnose most faults with all five senses and a dash of the 6th. Driving the old bangers is a similar kick.
Thanks again.