So this is really a "capt obvious" post... but I thought I would share anyway... its been on the colder side here in the Northeast recently and I have a MY - with the heat pump.
So I'm going to talk about this like its a single trip, but I've been noticing basically the same thing on several trips:
- Leave the garage- my MY prewarmed with maybe 3-4 "regeneration dots"
- Start Driving- goes up to 5-6 dots
- More Driving- goes down to 3-4 dots...
- As the sun drops its get colder, cabin heat is set at 67- no problem keeping the heat in the cabin while driving
- Dots go up- 7-10 dots
- Just as I stop near my home I get the regen warning again saying it is too cold. In fact, once I drove back into my garage and just as I did the snowflake appeared near the battery indicator after never being on.
So it is very obvious that the heat going into the cabin is at the expense of heat going to the battery to keep it warm. I mean, we know this because of the heat pump and octovalve, but it is interesting to witness it happening in cold weather in the MY.
All that said- I can also add that although I haven't done anything scientific... I really haven't lost much range in the cold. The 2 trips I do often that are a bit longer go like this:
Back in the summer I would charge up to 310ish miles go round trip and have 16%. Now in the cold I'm getting home with 12%.
The other long one I would charge up to 310 and "need" to supercharge for 5 mins to get home (OK, didn't "need" to but I didn't want any anxiety by returning home at 7%- and heck 5 min supercharging is like 1 SNL skit while I wait, so no big deal). Now in the cold I do the same supercharge for 5 mins, but if I wanted to go straight home the route planner would say return at 5% and must keep below 60mph (not going to happen). So it feels like the heat pump is doing an efficient job.
OH- one last thing... Yeah, my brakes were squeaking too... a little. But I think it may be sand/salt getting in there and since you don't use the brakes too often, when you do you get the squeak. After a few braking situations the squeak goes away for me.