I saw a recent youtube video of someone demonstrating frunk won't open if the car is locked so it must be fixed. I haven't yet seen anyone with a dead battery AND a locked car to verify frunk can indeed be opened with an a23. Just have to trust it'll work ..
The onboard 12V battery charger operates completely independently of the mains charger. It shouldn't change anything about the 12V health.
I’ve seen this question asked before and I have never gone more than 2 1/2 yrs on my Model S or Model 3 without replacing the battery. And yes, I plugged in ever night.
And I plug in every night and my Model X is going on 5 years and my Model 3 is 3.5 years on the original batteries.
I think the FL heat is brutal on the 12v batteries. My last battery only lasted 8 months(not normal) and the original lasted less than 3 years. I think your weather in Washington helps a lot.
Go back and start reading here:
teslamotorsclub.com
well...living in North Texas the 12V in my F150 lasted over 4 years (I traded it in for my Model 3) and it gets pretty hot here. I can see that in really hot places the 12V *might* fail after 3-4 yrs ... but definitely not after just 2 yrs. Hot places + cars and 12V batteries aren't unique for Teslas. And in ICE vehicles the 12V is usually located in the engine bay where it does get a lot hotter than in a Tesla.Go back and start reading here:
"Proactive" 12v battery replacement - good idea or overkill?
What an interesting topic. If these batteries typically last 3-4 years and Tesla’s insurance covers 4 years, then Tesla needs to replace 12v batteries free of charge (no pun intended) for most cars they sell new. Do other car manufacturers do the same? They usually have longer warranty on new cars.
I said the same thing about heat in the past and got a lot of pushback on it....
I have lived in Florida since the 80’s and it wasn’t long after that I noticed a 12v battery failure in every one of my ice vehicles averaging 3 years. I never skipped maintenance checks. Maybe salt air accelerates this issue.
Size might matter too. If they are anything like lithium ion, larger capacity batteries see less stress for the same usage.
Yes, cycles matter for Lead Acid also, so larger batteries by definition will have fewer cycles for the same number of Wh of use.
Same here, been in FL all my life. 3 years is about the average lifetime for my batteries. Making things worse is my car is black, so the heat soak must be really bad as its parked outside all day.
It must be the heat here in CA, our 2017 MX just had the 2nd 12v replacement this morning. The guy said on average, most 2017 MX 12v last about 2 to 3 years here. He has seen a few 2017 MX with first battery replacement this year, but that's rare. I watched the whole process. The Model 3 replacement took under 5 minutes. The Model X took like 30+ minutes. They have to take out a lot of stuff including the frunk liner, frunk tub, the big filter, and others to get to the 12V to take it out. The Model X 12v replacement also costed 2x as much as the Model 3. Model 3 is about $125, Model X is about $250. My extended warranty on the Model X does not cover 12v.
Maybe it's not so simple for you, but it looks just like the batteries I've replaced in ICE cars. As to longevity, I've owned two Model S's that had over 100,000 miles on them, both near four years old, and I never even looked at the 12-volt battery. I'm not sure where your "extreme temperature" comment comes from, as the battery does not sit in a hot engine compartment like in most gas cars, and the temperatures in Encino are relatively mild.
As another data point, I have a 2018 M3LR RWD that I took deliver in Oct 2018 and just got our 12V warning this week and had it replaced under warranty. So about 3.75yrs for me. SoCal and 18k miles.
I see you are asking someone else. I can't see that it matters if the car is plugged in or not because the 12vdc battery is managed and charged by the HV pack anyway.
