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High Voltage Battery is Being Replaced

Discussion in 'Model S: Battery & Charging' started by jacobp, Jul 16, 2014.

  1. jacobp

    jacobp Member

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    Two weeks ago my 12V battery needed to be replaced. Today, the car would not start and i was getting the "pull over" message. My SC tells me that engineering has detected that my entire high voltage battery (i guess all 7000 batteries) need to be replaced. has anyone else seen this? Is there anything i should be asking/demanding in the repair. Oh woe is me.

    Jacob
     
  2. CatB

    CatB Member

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    Not exactly. I had the old 12V replacement issue and when they sent ranger to replace it, he ran diagnostics and said main battery was also showing a fault. So they flat bedded it to Rockville and did battery swap. I was told there was a suspect part, but that they would take battery back to Fremont and test then refurb there. As always, they made service super convenient and pleasant. And my old A battery was replaced with a brand new B, so can't complain.
     
  3. ACDriveMotor

    ACDriveMotor Member

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    Though a scary event all signs point to TMC taking great care of their loyal customers.
     
  4. jacobp

    jacobp Member

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    Should i insist on a B battery? What's the difference between the A and B batteries?
     
  5. EVTECH

    EVTECH Member

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    More than likely they aren't installing old batteries in newer cars. Nobody has reported that on here yet. That just wouldn't make sense. Even IF they put in an old A type the only difference would be a few minute difference in Supercharging. Were they at least responsive when you had the issue? Getting the car picked up and everything? Loaner?
     
  6. jacobp

    jacobp Member

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    Yes, they immediately sent out a flat bed and a S85 loaner. Very responsive.
     
  7. markb1

    markb1 Active Member

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    85 kW A packs are limited to 90 kW at superchargers.

    - - - Updated - - -

    No, there has been at least one report of that.
     
  8. In2oil

    In2oil Member

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    I just had my hv battery pack replaced last Friday! The issue started with repeated 12v low battery warnings and to said the car cannot be driven. My car had the be shipped out if province , I live in Alberta Canada where there are no vs. the service I received from tesla is second to none. I had some issues and they took care of all the problem. While my tesla was in service, I was given a rental. My battery pack was a b, I am not too sure if a newer pack was installed, however they told me it was new and not refurbished! I still adore my tesla and as long as tesla gives me this kind of service. I'll be a tesla fan for life.
     
  9. wraithnot

    wraithnot Model S VIN #5785

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    I had a similar experience last month: 12V battery issue- stranded at Mt Shasta supercharger

    Getting stranded kind of sucked, but Tesla customer service was truly exceptional. My understanding of the situation was that the battery cells themselves were fine, but the battery pack also contains circuitry that is required to charge the 12v battery and part of that circuitry is what failed so they had to replace the whole pack. The repair technician said the replacement pack had "all new internal components". Hopefully the new components fix the issue that a number of us appear to have experienced.
     
  10. swegman

    swegman Member

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    It seems from reports of owners that it is not the batteries themselves, but a particular electrical component that fails. I wonder whether Tesla could redesign the battery pack to enable the SC people to gain access to these parts to replace them, rather than having to swap the whole battery pack. Would seem to be more cost effective, especially over the long run.
     
  11. redevries

    redevries René de Vries

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    Mine was replaced as well. From the technician that did the replacement I understood that the whole pack is sealed. The need to ship the whole thing back to the factory.
     
  12. jacobp

    jacobp Member

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    How can i tell which battery pack i have, a or b?
     
  13. capt601

    capt601 Vin02324

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    Raise suspension up if you have option and laying down behind front right wheel look under wheel,arch and you will see tag for battery pack. The tag is on front right side of pack for visualization, which is behind right front wheel. Hope that helps.
     
  14. Theshadows

    Theshadows Active Member

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    Does everyone know which packs they had that went bad? If it's limited to A & B packs that's good as far as the company is concerned (though bad for those owners).
     
  15. steve841

    steve841 Active Member

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    Tesla issued what amounts to an inspection of the main battery for low VIN and Signature owners...

    Mine is at the SC right now and they told me that - depending on what they find, they may need to ship the battery back to have it upgraded.

    I will update when I get my car back later today ....
     
  16. islandbayy

    islandbayy Active Member

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    Could you find out what constitutes Low VIN? I have 9846 and I have a 60kW A Pack (Though, apparently, the 60 A packs are of the build level of the 85 B packs due to later start in production).
     
  17. qwk

    qwk Model S P2681

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    Probably a vin of <3k.
     
  18. sranger

    sranger Member

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    Sounds like a failure of something like the DC-DC converter that converts pack voltage to 12vdc for the car's electrical system. If it quit working the car's electronics would drain the 12V battery...

    Is this converter in the pack? I know they do not let the service centers open the pack so it all gets replaced...

    Or it might just be a fuse in the pack on a circuit that sends pack voltage to an external DC-DC converter. Again they do not let the service centers open the pack so it would all get replaced even for something as simple as a fuse...
     
  19. markb1

    markb1 Active Member

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    The DC-DC converter is not in the pack.
     
  20. steve841

    steve841 Active Member

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    Not to hijack the thread but .... here's the update:

    The SC installed a new "loaner" HV battery. Mine will be shipped back to Tesla for upgrading of components (contactors and related).

    When it returns, they will put the old battery back in.
     

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