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I might be misunderstanding your post, but I wonder if you know that not all Teslas use the same type of battery than in an ICE car? And they are regularly discharged and charged deeper. Thus, not really a comparison age wise.Every lead acid battery I have ever owned in any application has failed eventually. The record is held by a small one that started a 5 kW generator. It lasted 10 years and that's twice what the better ones usually do. Most good ones seem to go about 5 yrs but I do have some marine ones in my boat that are on their 6th season. I'm nervous about them.
Assuming that Tesla is using a good grade of battery here they should last about 5 years. After that we can all expect that they are going to have to be replaced reasonably soon. If I keep this car that long I'll probably consider changing out that battery just to avoid potential unpleasant surprise on the road just as I'll probably swap out those marine batteries to prevent an unpleasant surprise in the middle of the lake..
My MX just flashed the 12v battery needs replacing. I called Tesla and they have advised me that the battery for the MX is on back order and may be 7-10 days before it can be replaced. My whole dash has now lit up with warnings. ABS not functioning properly, stability not operating properly, autopilot not currently functioning. Tesla has advised to keep the car in my garage until they can send a mobile service to replace the 12v. They will then look into all of the other issues the MX is having. I was told to rent a car for the duration since a loaner car is not available at this time. This is very frustrating since I have had the MX for just under 1 year. This is a major investment for me and I feel like I’ve just been punched in the stomach wondering if I made a bad decision. Has anyone else experienced something like this or is this unusual?
My MX has been sitting at the service center for a week now waiting for a battery. I’m told there is a nation wide shortage. Fortunately I was able to get a loaner after the first few days.
This will be my third 12v battery in 2.7 years. My first failed after only 4 months.
View attachment 444495 Welp good news folks, tesla roadside was able to come over and replace the 12V today.
the repair was quick maybe 20 mins.
So interesting factoid I learned today. There’s this hose that That connects to the 12V battery to exhaust fumes to a specific vent in the FRUNK.
From the hose itself I guess my old battery really gave out.
I don't want to get my tech in trouble, but during the battery replacement he admitted to me that the threshold for "battery requires service" is way too conservative. He said in most cases the battery would have lasted much longer. But when the "battery requires service" alert goes up you can't do various things (no software updates, summon, etc) so you are kind of forced to do the replacement.My "12V battery requires service" alert came on this morning. (Battery lasted 3 years, 4 months) Is there a rule of thumb on how much time has once this comes on to replace? (Already have a mobile appt in a week but just curious)
Thanks again! I re-opened the frunk and reconnected that hose you mentioned! Very easy once you know where to look.View attachment 444495 Welp good news folks, tesla roadside was able to come over and replace the 12V today.
the repair was quick maybe 20 mins.
So interesting factoid I learned today. There’s this hose that That connects to the 12V battery to exhaust fumes to a specific vent in the FRUNK.
From the hose itself I guess my old battery really gave out.