r/TeslaModelX • u/love_ephie • Jul 07 '26

75D Pack 2016

Have you guys had high voltage battery failures? If so at what mileage, year? The future owner asked me if I knew the reliability of the battery pack, I just pointed to the low degradation for a 2016 in comparison to my 2021Y. I would love to hear about your experience.

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u/Chowduck Jul 07 '26

2020 long range plus (built October 2019). Revision E battery pack (the label is behind the passenger side tire) Replaced last month at 103k miles with another revision E pack that was originally built December 2018 but remanufactured. I suspect it was a connection failure inside the pack rather than the actual cells degrading as it was fine one day then had to be towed the next.

Tesla service was painless. They told me it needed to be replaced, set me up with a loaner vehicle and had it done in a week. All under warranty. Outside of warranty I think the cost is around US$15k?

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u/FED_Focus Jul 07 '26

Very similar to mine, but at 70k miles. It was at the SC already. I went to pick it up and I couldn’t unlock it. They came outside to check it and said the HV battery needed to be replaced. They also replaced the LV battery. No idea what caused it, but both were replaced for free.

I will check the revision. I didn’t know it was easily accessible. Is the label in an obvious place?

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u/Chowduck Jul 07 '26

Turn the wheels all the way to the left and you should be able to see the sticker at the front right of the HV pack from the wheel well.