UK / Europe Prius 2 Coolant Change

https://attachments.priuschat.com/attachment-files/2021/06/206709_How_to_Replace_Gen_II_Prius_Engine_Coolant.pdf

 

^That's a very nice document, likely more complete/clear than Toyota's Repair Manual. Anyway, just for a cross-check, I've attached repair manual excerpts (added the inverter instruction, just in case).

 

It sounds like you don't have the coolant heat storage tank in the UK. But you should have a drain on the radiator part of the system not the upper inverter cooling radiator but the lower engine ice radiator push comes to shove just undo the bottom hose coming out the bottom of the radiator assembly that'll drain it pretty much by gravity as it's the lowest point in the system if you're doing all this coolant changing you might be changing a few hoses and then when you put them all back together just take your time and fill it slowly that's about all you can do with the generation two unless you have one of these vacuum filling devices that speeds the process up but reality about it is pouring it in slowly doesn't really take that long you want to put in the recommended volume and that's about it

 

@Lee Tomlinson, follow the instructions in the document linked by PriusCamper but ignore all steps that fuss with the coolant heat recovery tank. The drain and refill is much simpler without it. You may feel like, "Well that was too easy!" because it is. Just remember to check the level at the radiator filler neck every day for a week then maybe once a week for two weeks until you're satisfied all the air is out. For this time you can leave the upper engine cover off.

Best of luck.