Tesla Model 3 12V lithium battery failure — no start
Vehicle completely fails to wake up or respond to the app. No door handles deploying on 2021+ models. The 12V lithium-ion auxiliary battery in post-2021 Model 3 vehicles has a shorter lifespan than expected in some early production units. Tesla extended the warranty on 12V batteries for affected vehicles. If the battery fails completely, roadside assistance and a Tesla service centre are required as the battery is not user-replaceable on this generation.
Onarım / Çözüm
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No commonly reported misdiagnoses for this fault yet. If you have replaced a part that did not fix this Tesla Model 3 2021 problem, submit a wrong diagnosis report — it helps other drivers avoid the same costly mistake.
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