We moved from the Bay Area to Southern Oregon this last April, so I haven't had much winter driving experience with my NRG. Cold weather is now upon us. Mornings are in the high 20s low 40's. I am seeing the engine coming on for awhile when I start driving in the morning, even though the HVB is fully charged. Is this normal? Does the engine need to be at a minimum temperature like my old Prius?
This car is about 5 1/2 years old.
The last time the 12V accessory battery was replaced was about 4 years ago. It was checked by the dealer in late May of this year and they said it was fine.
I normally return from my travels with the HVB at zero miles and then fully charge overnight.
I park outside.
Your thoughts and/or experience?