TMC is an independent, primarily volunteer organization that relies on ad revenue to cover its operating costs. Please consider whitelisting TMC on your ad blocker and becoming a Supporting Member. For more info: Support TMC

12v Help!

Discussion in 'Model S' started by JonathanD, Dec 27, 2019.

  1. JonathanD

    JonathanD Member

    Joined:
    Apr 21, 2014
    Messages:
    432
    Location:
    OC, CA
    I got the 12v Battery Needs Service warning. After calling in, they tell me I should have 2-3 weeks before it dies. So I schedule the soonest mobile appointment the app will let me. A week later the mobile tech texts me that 12v batteries are out of stock with no ETA on resupply. I ask if I can take it to a service center and he said they are out of stock too. He empathetically mentions that he hopes they get them before my car dies. Yeah, me too.

    Questions:

    1) How is it remotely possible that a part so ubiquitous and is 100% required for Teslas to operate is out of stock?

    2) Are there any alternative escalation mechanisms any more?

    3) Do I have any other options other than hoping Santa brought Tesla some 12v batteries?

    Thanks for any ideas.
     
    • Like x 1
  2. PWlakewood

    PWlakewood Active Member

    Joined:
    Jan 9, 2019
    Messages:
    1,713
    Location:
    US
  3. glhs272

    glhs272 Unnamed plug faced villian

    Joined:
    Aug 21, 2013
    Messages:
    906
    Location:
    Burlington, WI
  4. cookie99

    cookie99 Member

    Joined:
    Mar 14, 2016
    Messages:
    866
    Location:
    California
    i knew that if my 12v battery dies I would replace it with this.. except my 2015 killed itself before the battery died, so now I guess i'll wait till my 2018 battery dies.

    but yeah, but this one dude. better performance AND lightweight? whats not to love. acid is yucky unless its the tab kind
     
  5. quickstrike12

    quickstrike12 Member

    Joined:
    Jun 13, 2018
    Messages:
    592
    Location:
    Fort Worth Texas
    Are there any downsides to a lithium 12v? Seems better than acid but why does Tesla not use lithium?
     
  6. cookie99

    cookie99 Member

    Joined:
    Mar 14, 2016
    Messages:
    866
    Location:
    California
    cost? tesla could have used a better (fill in the blank) for every single component in the car, but at the end of the day someone has to balance cost to value ratios.

    its also why aftermarket products exist, because someones willing to pay for that slightly better version
     
  7. JonathanD

    JonathanD Member

    Joined:
    Apr 21, 2014
    Messages:
    432
    Location:
    OC, CA
    I've heard it's more of a pain the butt to change them on older RWD models like mine, and I don't have tons of time between job & fam. Of course, I don't have time for a dead car either. Ugh. Just not exactly the binary choice I was hoping for at only ~5 years into ownership.
     
  8. rsg123

    rsg123 Member

    Joined:
    Jan 1, 2018
    Messages:
    501
    Location:
    Sacramento
    I watched the mobile tech replace my RWD’s 12v and it didn’t seem difficult. There’s a YouTube video about it.
     
  9. quickstrike12

    quickstrike12 Member

    Joined:
    Jun 13, 2018
    Messages:
    592
    Location:
    Fort Worth Texas
    I would gladly replace it myself with a lithium. I’m sure it’s not too hard. but I would need to know of any side effects or unintended consequences to the charging schedule of it now that it is a different type than OEM.
    And if Tesla would refuse any warranty issues later down the road because I made a change to the system like this.
    I’m still under warranty for a couple more years.
    I’m gonna dig around and see what I can learn about this. Must be some good info on the forums somewhere.
     
  10. PWlakewood

    PWlakewood Active Member

    Joined:
    Jan 9, 2019
    Messages:
    1,713
    Location:
    US
    #10 PWlakewood, Dec 28, 2019
    Last edited: Dec 28, 2019
    Warranty cannot and will not be voided on any part of the car, period, no if ands or butts! Your car will operate the same and you wont notice any difference at all.

    Google this and you will find all your answers:

    magnuson moss warranty act

    Now your 12v battery may have failed prematurely but I don't know the specifics on the warranty on your car to say whether or not it should be covered. If you cant wait for a replacement and need your car then replace it on your own.
     
  11. Only Trons

    Only Trons Supporting Member

    Joined:
    Jun 22, 2013
    Messages:
    485
    Location:
    Northern Virginia
  12. tcoombes

    tcoombes Supporting Member

    Joined:
    Jan 22, 2018
    Messages:
    1,029
    Location:
    Northern California
    I have heard some people say lead acid batteries hold up better in very cold climates, but the newer lithium batteries have improved significantly.
     
  13. webbah

    webbah Member

    Joined:
    May 22, 2012
    Messages:
    909
    Location:
    Lucerne, Switzerland
    I have the Ohmmu 12v in my 2019 Model 3. One of the first mods I did. Love it! I have 2 devices using peak 5 watts all the time (Blackvue 2-ch d900s and a Teltonika RUT850 Automotive Wifi router) and with the lead acid the car would constantly wake from sleep every 2 hours to recharge the 12v. With the Ohmmu the car sleeps for 8 hours or more and then wakes up the charge. This is due to it maintaining higher voltage for longer than the lead acid batteries. I also am in cold climates here and have no issues at all with that either.
     
    • Like x 1
  14. shokunin

    shokunin P85 & M3

    Joined:
    Feb 28, 2012
    Messages:
    1,199
    Location:
    Irvine, CA
    I'm in the same boat. My 12v warning alert appeared mid-december, scheduled mobile service and was told the same out of stock situation. They ordered a battery but had no idea when it would be back in stock.

    If the battery dies, you could revive the car by removing the nose cone and apply 12v to the jumper terminals. Not sure where the jumpers are in the facelift versions.
     
  15. webbah

    webbah Member

    Joined:
    May 22, 2012
    Messages:
    909
    Location:
    Lucerne, Switzerland
  16. Only Trons

    Only Trons Supporting Member

    Joined:
    Jun 22, 2013
    Messages:
    485
    Location:
    Northern Virginia
    I will not dispute the graphs supplied by Ohmmu .... but simply recommend that one consider those graphs are supplied by the manufacturer and not an independent agent.

    I hope they are indeed accurate ... as I don't want to make this swap-out anytime again soon.
     
  17. sorka

    sorka Well-Known Member

    Joined:
    Feb 28, 2015
    Messages:
    7,404
    Location:
    Merced, CA
    I replaced my own in 5 minutes. Way easier than it was on my Dodge Durango or 2nd Gen Toyota Prius.
     
  18. Only Trons

    Only Trons Supporting Member

    Joined:
    Jun 22, 2013
    Messages:
    485
    Location:
    Northern Virginia
    You replaced your 12V battery in an early 2013 RWD in less than 5 minutes? It took me more than that just to remove all the frunk trim. And I've worked on numerous vehicles since the early 60's.

    Am I missing something here?
     
  19. sorka

    sorka Well-Known Member

    Joined:
    Feb 28, 2015
    Messages:
    7,404
    Location:
    Merced, CA
    I guess I'm missing something. 30 seconds to remove the liner and pop the internal trunk release and light harness through the liner. 30 more seconds to remove the two 13 mm bolts and two 8 mm bolts holding the tub in.

    The entire job is about 5 minutes vs over an hour for my 2004 Dodge Durango(no longer own it) and my 20 minutes for my 2009 Prius.
     
  20. Only Trons

    Only Trons Supporting Member

    Joined:
    Jun 22, 2013
    Messages:
    485
    Location:
    Northern Virginia
    [/QUOTE]
    Sorry; guess I'm missing something. Are we talking about the same thing? I didn't have to remove a light harness; nor was it only "two 13 mm bolts and two 8 mm bolts holding the tub in."

    I don't want to disagree, but I'm having difficulty understanding ....
     

Share This Page

  • About Us

    Formed in 2006, Tesla Motors Club (TMC) was the first independent online Tesla community. Today it remains the largest and most dynamic community of Tesla enthusiasts. Learn more.
  • Do you value your experience at TMC? Consider becoming a Supporting Member of Tesla Motors Club. As a thank you for your contribution, you'll get nearly no ads in the Community and Groups sections. Additional perks are available depending on the level of contribution. Please visit the Account Upgrades page for more details.


    SUPPORT TMC