Just curious, what is the capacity of the inverter cooling system? I'm curious if it would be "good enough" to suck the coolant out of the reservoir a few times (and replace it), similar to what some people do with brake fluid. I'm guessing the answer is no, but you never know...

 

Manual says about 2.9 litters or 3.1 qrt. I'm sure it would be better than nothing, but I would make sure to use Toyota coolant designed for this car only.

 

Waste of time/coolant. The reservoir is less than 1/2 the capacity. There's a drain plug for replacing the coolant. Use it.

 

Yep sounds like it. I assume I can just use the maintenance mode to run the pump after draining it?

 

https://www.greenhybrid.com/forums/f...-change-28565/