POLL: Have you had to have your 12V battery replaced?

[radami1]

Just got the warning today. Scheduled at Chicago Grand for Monday 4/30/18. Have the original battery with car delivered 6/10/15. Now have 41000 miles.
Model s 85D. Mostly charge at supercharger, occasionally at home.

 

[tga]

Mostly charge at supercharger, occasionally at home.

How you charge the car's main battery won't impact the 12V, since the 12V isn't charged by AC or supercharger, but rather via the HV battery off the HVDC bus.

 

[asim120]

Just received 12V warning #2 today, unfortunately a few weeks after my 4th year annual service visit and the expiration of my original warranty. Replaced my first 12V battery at 16,000 miles. I have 28,000 miles on my 60 currently.

Almost no supercharging (maybe once or twice?) and only nightly home charging since the last battery change. Alas.

 

[Idaho_Steve]

Have had my ‘18 S100D 6-weeks. 4,500+ miles no troubles whatsoever but battery alert this week and replaced this morning. Tech said some recent firmware updates were putting a “strain” on OEM batteries. He did comment that it was unusual in a vehicle this fresh. Love the car.

 

[Texas]

Typo: replaced my battery 4/16/18, not 6/16/18.

 

[Xenoilphobe]

Replaced mine (March 2014 build date) after 57,000 miles and 3 + years. Upgraded to this battery - now at 72,000 miles - still no issues..
element3batteries

 

[Only Trons]

@Xenoilphobe ;

What date did you install the new replacement battery? Did you do it yourself? Was any Tesla software/firmware change required?

 

[danm1031]

Bought a 2012 Model S with around 23K miles in 2015. Replaced the 12V battery in Feb. 2017 and again May 2018. What gives? Why don't these batteries last?

 

[gadgetfreak]

Have had my 2015 model S 70 since January 3, 2019. The warning came on a couple days ago. Mobile service is coming tomorrow to fix it.

 

[Xenoilphobe]

@Xenoilphobe ;

What date did you install the new replacement battery? Did you do it yourself? Was any Tesla software/firmware change required?

I think it’s been 2 years ago now. No tesla installed the battery. I assume they did change the charging protocol but I never asked.

 

[scottm]

Well today's the day... just got my first low 12V battery replace warning on the 2014 Model S and a new battery is on the way, ranger bringing one over. $210 CAD for the part.

155,500 km on the car

Even with my babying using the trickle charger every night... the original battery has tasted defeat in 4.5 years of daily use. But I'm pretty sure use of the Ctek has extended the life of the battery.

I'm not unhappy about getting 4.5 years from the first one. Seems OK. Hope second is just as good. I'll ask Ranger and find out if a battery firmware update is required. I suspect so.

It would be useful if we could get the number of drive cycles the car has done, and number of 12V top-ups it has done while parked.

 

[Bigdog444]

Beware of the relay between the service battery and the main battery pack. They just replaced mine in my 2013 p85 it’s cost is $2300 for the part alone. No explanation as to why the relay failed. Car has 70k miles. Our 12 volt has been replaced 3 times. Other non warranty items replaced. $600 wheel sensor system. $500 water in taillights.

 

[scottm]

Beware of the relay between the service battery and the main battery pack. They just replaced mine in my 2013 p85 it’s cost is $2300 for the part alone.

Is this part otherwise known as "the contactor"? I think it's embedded in the pack and needs to be opened to access it.

Tesla had started a contactor replacement campaign and people were getting these done pro-actively under warranty years ago when they were failing and leaving people stranded roadside.

Yours probably fits into the VIN range... but weren't pro-active enough to get it done when it was free to you.

I'd be chatting to Tesla about that if it were me.

 

[Brass Guy]

Beware of the relay between the service battery and the main battery pack.

Maybe they meant the DC-DC converter? The contactors are in the battery so are covered by the 8 year warranty.

 

[sakimano]

too bad the poll doesn't indicate what year your car is.

still, I'm shocked it's 50/50!!!

 

[Bigdog444]

Is this part otherwise known as "the contactor"? I think it's embedded in the pack and needs to be opened to access it.

Tesla had started a contactor replacement campaign and people were getting these done pro-actively under warranty years ago when they were failing and leaving people stranded roadside.

Yours probably fits into the VIN range... but weren't pro-active enough to get it done when it was free to you.

I'd be chatting to Tesla about that if it were me.

Just picked up car. Reads Asy,dcdc converter 1850.00 when asked to describe its function. It’s the equivalent of a ice alternator. Asked to see the part was informed it was sent back to be evaluated. This new part comes with s 2 year warranty. Take care

 

[Bigdog444]

Maybe they meant the DC-DC converter? The contactors are in the battery so are covered by the 8 year warranty.

Yes your right it’s the dcdc coverter

 

[Xenoilphobe]

Just picked up car. Reads Asy,dcdc converter 1850.00 when asked to describe its function. It’s the equivalent of a ice alternator. Asked to see the part was informed it was sent back to be evaluated. This new part comes with s 2 year warranty. Take care

Here's what it looks like: Power inverter question, in the early Model S's it was in the passenger wheel well, later models they moved it up centered behind the frunk. It's the silver device with the red grommet cover and yellow warning stickers. You can get them used on eBay for about $500

2012 - 2015 TESLA MODEL S DC DC CONVERTER ASSEMBLY UNIT 6009170-00-J 600917000J | eBay

 

[Sandollars]

Once. After 3 days of ownership due to a warning from the car.

 

[Bigdog444]

We replaced two twelve volt batteries since new. Make that three. One was just replaced 5000 miles ago.