Jumped 12V working fine. Replace anyway?

[teethdood]

My 12V just died after 2 years without warning. I jumped it and everything appears to work normal. Should I be proactive and replace it now? (with Ohmmu 12V) I'm 90% leaning proactive since the batt is 2 years old. It's just weird that it died without a replacement warning. 100 degrees heat kills batteries too.

 

[notrhj]

Replace it, especially if it was without warning.

 

[jjcyr]

Replace it, same thing happened to me. It’s not worth the risk.

 

[lakemirror]

Another vote for replacing. Too much chaos happens when the 12v goes south.

 

[NewbyMaybe]

The ohmmu was worth it in my situation. If you can find a cheaper, quicker replacement then you will be good. If your battery has the adapter on top that helps. Unfortunately surgery is involved, still the best car in the world.

 

[DCGOO]

Even Tesla places high priority on 12V battery replacements. My last one on my 2018, was replaced in less than 24 hours after reporting the warning. The very next morning, mobile service was in my driveway with a warranty replacement. I guess they figured out a failed battery means an expensive tow, so they jump right on it.

 

[jboy210]

My 12V just died after 2 years without warning. I jumped it and everything appears to work normal. Should I be proactive and replace it now? (with Ohmmu 12V) I'm 90% leaning proactive since the batt is 2 years old. It's just weird that it died without a replacement warning. 100 degrees heat kills batteries too.

Another vote to replace it. It is telling you it is time, or actually past time.

 

[Rice&Curry]

Vote to replace it. Not sure if Ohmmu is the best option since the tesla BMS may not be updated to handle Ohmmu in older cars which did not come with OEM Lithium battery. It is not a huge risk as Ohmmu provides so sw to manage it, but you should be aware of it.

 

[NewbyMaybe]

Ohmmu explains that issues only happen when the battery is installed before stored energy in the 12v system is discharged. Sorry I don't a quote.

 

[JWM3]

The 12V battery on my X just died too after 2 years, seems very short life compared with my other cars. Is it normal to replace the 12V battery every 2 years on an X?

 

[NewbyMaybe]

Sometimes a year, lots of ideas on factors.

 

[LoudMusic]

12v batteries are cheap.

 

[DCGOO]

The 12V battery on my X just died too after 2 years, seems very short life compared with my other cars. Is it normal to replace the 12V battery every 2 years on an X?

12v battery replacement is a warranty item. It will be replaced by Tesla for free if you are in warranty. I had to replace my 12v battery twice on my 2018. It is a high priority item for Tesla, open a ticket and they will get to you within a day or two

 

[geordi]

12v batteries are hardly "cheap" at $165 each for the X. But the classic X has somehow managed to sort out that it has a lithium battery in it, and subsequently rejected it. Annoying.

 

[oldsport]

where do y all see mx batteries for 165, i see 300+ $

 

[geordi]

That is what the service center in Milford CT charged me for the S, they quoted the same for the X

 

[oldsport]

you mean diy, ok...

 

[geordi]

Bought one for the classic X from the service center today, charged $176 with tax for cash and carry.

 

[oldsport]

Bought one for the classic X from the service center today, charged $176 with tax for cash and carry.

can you snap a picture of what it looks like?

 

[brkaus]

S & X have AGM batteries. They are around $200. The 3 & Y have regular FLA batteries. They are around $85.

Imho, the ohmu is a waste of $$.