When my 12V started to go I bought an Ohmu and there was a delay in getting it. The service center told me the warning usually gives you about a month's warning. They may have told you two weeks because of the age of the battery.
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When my 12V started to go I bought an Ohmu and there was a delay in getting it. The service center told me the warning usually gives you about a month's warning. They may have told you two weeks because of the age of the battery.
Well, my 12V battery has been replaced. The Tesla mobile technician was here this morning. He was here for over an hour, maybe 75-90 minutes or so. While here, he also checked my tires and set the tire pressures.
We had a foot or so of snow here yesterday in the Boston area, and it was about 25F when he arrived. My car is parked outside, but a generous neighbor very kindly allowed me to borrow her garage space for a couple of hours so that the technician could work inside in a flat, dry, level garage space instead of outside on a snowy parking lot. I assume he appreciated that!
I delayed his completion inadvertently. He had finished the work and was doing something to reset the computer (not sure what exactly), and I wandered down to see how the job was going, and had a Tesla key in my pocket. As I approached the car, the car detected the key and unlocked, so he had to begin that step again. I apologized, and he was nice about it, but I could tell it delayed him a bit.
The cost was $214 -- battery $165, labor $39 (surprisingly little), and sales tax $10.31. I have an ESA, but they evidently did not use the ESA to cover the battery because in that case the charge would have been a flat $200. Small difference.
I was very pleased that the 5+ year old battery held out for the two weeks since the warning first popped up, despite the recent cold weather.
We had a foot or so of snow here yesterday in the Boston area, and it was about 25F when he arrived. My car is parked outside, but a generous neighbor very kindly allowed me to borrow her garage space for a couple of hours so that the technician could work inside in a flat, dry, level garage space instead of outside on a snowy parking lot. I assume he appreciated that!
I delayed his completion inadvertently. He had finished the work and was doing something to reset the computer (not sure what exactly), and I wandered down to see how the job was going, and had a Tesla key in my pocket. As I approached the car, the car detected the key and unlocked, so he had to begin that step again. I apologized, and he was nice about it, but I could tell it delayed him a bit.
The cost was $214 -- battery $165, labor $39 (surprisingly little), and sales tax $10.31. I have an ESA, but they evidently did not use the ESA to cover the battery because in that case the charge would have been a flat $200. Small difference.
I was very pleased that the 5+ year old battery held out for the two weeks since the warning first popped up, despite the recent cold weather.
dark cloud
Active Member
Mine finally got the message. Tesla made a service appt. with mobile for a month from now. When I asked if it would last that long I didn't get an answer. Hmmmm. Think I will drive to a sc and buy one just to make sure I am not stranded.
Plugging in our not won't help the 12V. When the car is off, it's running the 12V loads off the 12V battery, letting it discharge, then turning on the HV and recharging it from the main battery. That behavior is the same whether the car is plugged in or not.
It's the cycling that does in the 12V battery; the only way to stop it is to connect a (powerful enough) battery charger/maintainer directly to the 12V battery, or drive the car, in which case the HV battery is powering the DC-DC converter which is in turn powering the 12V subsystem.
Just got the 12v warning on the display. Not bad considering I'm still on the original 12v from 2015. Scheduling with the mobile app was easy, it suggested the 12v replacement based on what the car was telling me and they had a next day mobile service appointment.
Excellent! Mine lasted about one year less, and I thought I did well! Many anecdotal reports of batteries failing much sooner than that, so you (and I) were lucky with ours.
Mine failed after 2-3 years. I replaced it with a Li-ion battery and haven't had a single problem since.
The repair quote today was $165 for the battery and $63 in labor. Plus about $17 in tax for a total of $245. The appointment today got moved to Friday due to a scheduling issue on Tesla's side.
I don't know what they are doing now, but it has been a lead acid battery in the S for most of it's production run.
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