Hey everybody,
I'm going to do a complete coolant replacement. I have found plenty of information regarding replacing the engine coolant. But I haven't found much for the power control unit. If you don't know, there is a separate coolant system for the power supply of the hybrid system. I'm seeing a lot of replace at 100K or 5 year recommendations. Well I have a 2012 CT 200H F sport. So I figure I am due. I've read the coolant becomes corrosive and eventually eats away the interior of your radiator, heating core, etc. I know there is a petcock valve that allows the coolant to be drained easily for the engine coolant. I just can't find anything on the power control unit. I haven't lifted the car up yet to take a peek but I was wondering if anyone else has replaced this themselves? Can it even be flushed? does it even have its own water pump? I plan on flushing the system with distilled water and then filling back up with fresh antifreeze. I do know how much fluid it takes however.
Any quick tips that would save me some time that you all have found out would be tremendously appreciated.
Also, what is your antifreeze of choice? I like Amsoil for other fluids but haven't done much research on their antifreeze.
Thank you,
Seth
Power Control UnitInitial fill 2.2 quarts
With Recirculator SystemInitial fill 7.3 quarts
With O Recirculator SystemInitial fill 6.9 quarts
I'm going to do a complete coolant replacement. I have found plenty of information regarding replacing the engine coolant. But I haven't found much for the power control unit. If you don't know, there is a separate coolant system for the power supply of the hybrid system. I'm seeing a lot of replace at 100K or 5 year recommendations. Well I have a 2012 CT 200H F sport. So I figure I am due. I've read the coolant becomes corrosive and eventually eats away the interior of your radiator, heating core, etc. I know there is a petcock valve that allows the coolant to be drained easily for the engine coolant. I just can't find anything on the power control unit. I haven't lifted the car up yet to take a peek but I was wondering if anyone else has replaced this themselves? Can it even be flushed? does it even have its own water pump? I plan on flushing the system with distilled water and then filling back up with fresh antifreeze. I do know how much fluid it takes however.
Any quick tips that would save me some time that you all have found out would be tremendously appreciated.
Also, what is your antifreeze of choice? I like Amsoil for other fluids but haven't done much research on their antifreeze.
Thank you,
Seth
Power Control UnitInitial fill 2.2 quarts
With Recirculator SystemInitial fill 7.3 quarts
With O Recirculator SystemInitial fill 6.9 quarts