If the wipers get iced in, what is the best method to clear them? With other cars, I would clear enough snow to lift the wipers,then finish clearing the windshield under the wipers and clear snow/ice from the wipers themselves. However, on the M3 the wipers cannot be lifted from the stowed position. Just clear the windshield and run the defroster long enough to free the wipers?
What's a good windshield cover? The Basenor cover for the M3 looks like it barely reaches the frunk lid. Can it be positioned to overlap the lid enough to keep the rain out, so it doesn't freeze around the wipers? I suppose using Settings -> Wiper Service Mode before attaching the windshield cover would be even better.
I'm surprised you drive your car in cold weather. The current is much higher than L2 charging.I notice a number of recommendations to time battery charging to coincide with departure time in the winter. This is a good idea if you live in a relatively moderate climate or park in a heated garage. It may not be a good idea if your car is parked in a cold environment, as lithium batteries really do not do well charging when frozen. There is a reason Tesla limits regen when the battery is cold.
I'm not saying to change the regen setting. I'm saying that by reducing the amount of regen you use by changing your driving habits without using the brake more you can reduce battery consumption and increase range. So the reduction in regen available in cold weather can be considered somewhat of a good thing. I almost never use full regen anymore because I plan for my deceleration to be more gradual than I used to. In the winter you need to maximize your range and this is one easy way to help.
I'm guessing that using full regen often you get back only about 70%. By easing up, you don't rely on regen as much for deceleration but just road and aerodynamic friction.
I think the answer is in behavior rather than physics. (A few) people learn to manage their kinetic energy more efficiently by using the road to slow down.
I notice a number of recommendations to time battery charging to coincide with departure time in the winter. This is a good idea if you live in a relatively moderate climate or park in a heated garage. It may not be a good idea if your car is parked in a cold environment, as lithium batteries really do not do well charging when frozen. There is a reason Tesla limits regen when the battery is cold.
Preheating a frozen car when connected to shore power is a great idea, but I also reverse charging in the summer and winter to be a little kinder to the battery. In summer, I let the battery cool down overnight before charging so charging is timed to finish before I leave in the morning. In winter, if parking in the cold, I charge as soon as I get home, while the battery is still warm from driving and then I preheat in the morning when the battery is frozen to warm it up. Similarily, I park outside at work and if I do plug in in the winter I only preheat/precondition to warm the battery, never charge. If I park in a heated garage, I let the battery warm up overnight and charge in the morning.
Make of this what you will, but lithium plating caused by higher C rates of cold charging is a thing. The dendrites caused by lithium plating are likely behind some of the spontaneous battery fires and likely why Tesla has reduced battery capacities on some of the older 85 packs.
You are aware that the BMS (Battery Management System) limits the charging rate when the battery is cold, right?
i was thinking quite the opposite. unless you're doing donuts in the snow, they should help to protect your wheels. additionally I was planning on using them for the extra 4% or whatever due to the colder conditions.Anyone have any adverse experience of aero covers in winter? We don't get huge amounts of snow here in UK, but do get regularly gritted.
Wondering if its best to remove aero covers to prevent accumulation of snow/grit/crap behind the covers?
Not normally an issue with other cars with plain spoked or solid rims that I've had, but combination of spoked wheels and clip on covers may allow more debris to settle and/or dislodge the covers/wear the rims?
It's well worth investing in a spare pair of wheels if you can afford it and/or can store them; and most tyre places will swap them over for you cheaply or even for free.
Then I'll be more explicit for you: your plating savings from L2 charging are at best a rounding error compared to the plating from driving in cold weather. And missing out on gentle battery warming before you drive is not doing your battery any favors. I suspect quite the oppositeI am. Just pointing out that there is an option to drive a warmed up car while also minimising the chance of plating in very cold weather. I don't worry about charging a frozen battery, but I would rather avoid it when possible.
Then I'll be more explicit for you: your plating savings from L2 charging are at best a rounding error compared to the plating from driving in cold weather. And missing out on gentle battery warming before you drive is not doing your battery any favors. I suspect quite the opposite
You are correct that plating is a phenomenon related to charging. Do you regen when you drive ?Discharging a frozen battery does not cause plating to happen; it is fine to discharge, the issue is charging. Also, I am suggesting preconditioning is good - it warms the battery without charging.
I'm not railing against anyone who chooses to charge a frozen battery, just providing some information so an informed choice can be made. Feel free to disregard if it doesn't agree with your views.
You are correct that plating is a phenomenon related to charging. Do you regen when you drive ?
Do you know the allowed regen currents at the temperatures you are concerned about ?Of course, but both Tesla
Sounds like Tesla protects the battery from the cold when needed.There is zero regen at these temperatures, until the battery warms up, and even then AC charging will be reduced and 6kW will be redirected to the battery heater.