Like the other cars, the 12-volt battery system in Tesla vehicles powers the infotainment system, lights, airbags, windows, and more. Typical 12V batteries last about 3-4 years but the batteries of Tesla’s Model S and Model X have tendency to die rapidly compared to other vehicles.
Elon Musk also agrees that it could be better and he announces “Major Software Improvements” to fix this issue.
Couldn’t agree more — major software improvements are already in place to extend its life & more coming
— Elon Musk (@elonmusk) September 15, 2020