45e in extreme cold

ST3 · 02-20-2024, 10:54 PM

Quote:

Originally Posted by E91toG05

In Lake Placid and it got really cold overnight- approaching zero Fahrenheit. In the morning I could not engage electric mode - the weird part was that there was no message whatsoever- just like the button did not work. Car started in hybrid and pushing electric button did nothing. After a few minutes I was able able to engage electric and all was well after that. Dumb that there is no message to tell you it’s too cold.

What year is your G05?

E91toG05 · 02-21-2024, 06:14 AM

Quote:

Originally Posted by ST3

What year is your G05?

2022

jad03060 · 02-21-2024, 05:50 PM

The HVB supplies the 12vdc needed to run most all electronics through a DC-DC converter, so the batteries will warm some just from the current draw. The EV motor is likely supplying power to them as well, which will warm them some. Batteries can’t provide a huge amount of power when cold or hot…cooling isn’t a big deal as they are actively cooled when necessary, but unlike most EVs, BMW PHEVs do not currently have battery heaters.

When I had an i3, on a super cold day, it would start to warm the battery up to 3-hours prior to a scheduled departure time. That vehicle had a 1Kw electric heater that would only come on if you were plugged in and set a departure time.

tooloud10 · 02-21-2024, 08:47 PM

Quote:

Originally Posted by E91toG05

Dumb that there is no message to tell you it’s too cold.

My ‘23 45e shows a thermometer on the battery icon on the lower right of the instrument cluster when the battery is too cold for EV driving.

E91toG05 · 02-21-2024, 08:50 PM

Quote:

Originally Posted by tooloud10

My ‘23 45e shows a thermometer on the battery icon on the lower right of the instrument cluster when the battery is too cold for EV driving.

Maybe mine did that too and I was just too cold to notice lol.

ST3 · 02-22-2024, 12:25 PM

Quote:

Originally Posted by E91toG05

Maybe mine did that too and I was just too cold to notice lol.

I’m assuming that’s what happened. The reason I asked you about the year is I was thinking maybe this was a difference with the LCI. I have a 2023 and am in extreme northern VT. I’ve received the warning when I can’t run on battery.

02-21-2024, 05:50 PM	#47
jad03060 Major General 3185 Rep 6,835 Posts Drives: X5 45e Join Date: Aug 2018 Location: NH iTrader: (0)	The HVB supplies the 12vdc needed to run most all electronics through a DC-DC converter, so the batteries will warm some just from the current draw. The EV motor is likely supplying power to them as well, which will warm them some. Batteries can’t provide a huge amount of power when cold or hot…cooling isn’t a big deal as they are actively cooled when necessary, but unlike most EVs, BMW PHEVs do not currently have battery heaters. When I had an i3, on a super cold day, it would start to warm the battery up to 3-hours prior to a scheduled departure time. That vehicle had a 1Kw electric heater that would only come on if you were plugged in and set a departure time.
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