Anybody install engine block heater in 2023 or 2024 prius?

TOYOTA PRIUS/PRIUS PRIME 2023 + BLOCK HEATER Cartridge Heater PN: PK5A4-89J14

705-726-0319 www.jacksonstoyota.com

Attached is the Installaion instructions

Block heater location in Red Below.

 

^ Compared to earlier generations, that is a ridicuously easy location.

Anyone know the wattage? Our 3rd gen's (round the back, in a morass of cables) was 400, but there was a recall, due to fire hazard. How they "fixed" it: the new one is apparently 200 watts. Instead of toasty after two hours, it's tepid after four.

 

Agreed... You'd probably have to barely lose any coolant installing it. But if I was doing it, I'd see if there is a location to install it at the bottom of the engine because heat rises and it'd be more efficient.

 

Yes, none. Unlike most, Toyota opted to not immerse in coolant: it just sits in a pocket with heat transfer grease.
Plus factor: no coolant spillage.

Negative, and maybe one factor in them catching fire: heat transfer grease might melt away, leaving it dry and overheating.

 

Seems less efficient to heat metal via conduction, rather than heating coolant. Of course heating coolant that circulates with pump would be the best, but whatever...