I ask this question w/r/t my '21 MSLR, but I'm also planning to apply answers to our '18 M3. Please let me know if there is any reason to treat them differently.
Lately in my MSLR, even though I charge only to 90-92%, I've been getting the "regen limited" notification. I used to get that only when I charged up near 100%. So, I take this to mean the battery charge level calibration is now off.
I asked about this at the Service Center a couple days ago when picking Nameless up from service, and the guy told me that the advice they are currently giving is this:
Run the battery down as low as possible, then charge to 100% with the 110V charging cable. Do this 4-5 times (!!!!!). Pressing him a bit, he said the key was to charge SLOWLY, but I'm hoping it doesn't actually have to be THAT slow to be effective, because that process would take me a month LOL.
It just so happens I won't be needing the car much this week, so I'm running it down now in the garage (in Boston, it's 30 degrees, so I opened the windows and told the climate control to keep it at 77). When it gets down near 0 I'll start the process with the 110V charger and I'm pretty sure I can get it up to 100% by next weekend.
So my questions: what are your experiences with attempting to recalibrate the battery, and did you have to jump through this extreme set of hoops?
Would the lowest L2 setting be a reasonable substitute for using the 110V charger?
Thanks!
Lately in my MSLR, even though I charge only to 90-92%, I've been getting the "regen limited" notification. I used to get that only when I charged up near 100%. So, I take this to mean the battery charge level calibration is now off.
I asked about this at the Service Center a couple days ago when picking Nameless up from service, and the guy told me that the advice they are currently giving is this:
Run the battery down as low as possible, then charge to 100% with the 110V charging cable. Do this 4-5 times (!!!!!). Pressing him a bit, he said the key was to charge SLOWLY, but I'm hoping it doesn't actually have to be THAT slow to be effective, because that process would take me a month LOL.
It just so happens I won't be needing the car much this week, so I'm running it down now in the garage (in Boston, it's 30 degrees, so I opened the windows and told the climate control to keep it at 77). When it gets down near 0 I'll start the process with the 110V charger and I'm pretty sure I can get it up to 100% by next weekend.
So my questions: what are your experiences with attempting to recalibrate the battery, and did you have to jump through this extreme set of hoops?
Would the lowest L2 setting be a reasonable substitute for using the 110V charger?
Thanks!