Hybrid in the cold...

[evlfred]

I'm 90% certain that when the truck is in cold weather (below 30f) the the hybrid system is in some kind of battery preservation mode. I notice less gas mileage and in driving I very rarely get the engine shutting off at stops or when going slowly. The last week has been in the teen's or 20's and coming back into my neighborhood (where the truck previously ran without gas the whole way to my house, which is about a 3rd mile) it's run the gas engine the whole way. Today the truck was nicely warmed up and it was in the mid 30's. It ran most of the way to my house in electric mode and my trip economy was back to where it was before it got cold. Anyone have any info on this?

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[32spoke]

Batteries are less tolerant to hot and cold weather. Some EVs heat the batteries before the batteries can take a charge. Some EVs reduce cooling the cabin to divert cooling for the batteries in hot weather. I sell automotive batteries, regular lead acid/AGM/and Lithium… I can tell you what the weather has been like based upon the month and battery sales…. Hot and cold weather= I sell batteries. Hopefully Toyota has some explanation for you and possibly some solutions, too.

 

[Baltimore]

I suspect you're also running cab heat, be it the cabin heat, seat heater, steering wheel heater. These all increase energy demand, which can trip the draw level of engine vs battery alone.
When it's warmer, your running them minimally or not at all

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