Tesla Removes Battery Health Test Feature in 2025.26 Update – What We Know

AUG 19,2025,By lan

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   Tesla has quietly removed the built-in battery health test in its 2025.26 software update, according to Not a Tesla App. The feature previously allowed owners to check their high-voltage battery's condition under Controls > Service > Battery Health.

1. Affected Vehicles

The removal impacts models differently:

Model Year Status
Model 3 2025 ❌ Fully removed
Model S 2024 ❌ Fully removed
Model 3 2018 ⚠️ View-only (no new tests)
Cybertruck All ❌ All data deleted

   Notable exception: Some 2025 Model Ys retain full functionality if never tested before.

2. Service Mode Changes

  • HV Battery Self Test option removed from Service Mode
  • No mention in official release notes
  • May be moved to paid Service Mode Plus (unconfirmed)

3. Community Theories

Reddit discussions suggest:

  • Reduce service requests: Frequent tests caused unnecessary anxiety
  • Technical issues: Some reported battery faults post-test
  • Data transparency: Tesla's health metrics were stricter than competitors

Key facts:

  • Tesla's BMS (Battery Management System) remains industry-leading
  • Third-party tests like Aviloo show ~84% average health after 5 years
  • Other EVs may report inflated numbers by excluding buffer zones
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TPARTS Multi-Device Wireless Game Controller (Special programmed for Tesla Model 3/Y/S/X), Switch/STEAM Deck/PC/Tesla
TPARTS Multi-Device Wireless Game Controller (Special programmed for Tesla Model 3/Y/S/X), Switch/STEAM Deck/PC/Tesla
TPARTS Multi-Device Wireless Game Controller (Special programmed for Tesla Model 3/Y/S/X), Switch/STEAM Deck/PC/Tesla
TPARTS Multi-Device Wireless Game Controller (Special programmed for Tesla Model 3/Y/S/X), Switch/STEAM Deck/PC/Tesla
TPARTS Multi-Device Wireless Game Controller (Special programmed for Tesla Model 3/Y/S/X), Switch/STEAM Deck/PC/Tesla
TPARTS Multi-Device Wireless Game Controller (Special programmed for Tesla Model 3/Y/S/X), Switch/STEAM Deck/PC/Tesla
TPARTS Multi-Device Wireless Game Controller (Special programmed for Tesla Model 3/Y/S/X), Switch/STEAM Deck/PC/Tesla
TPARTS Multi-Device Wireless Game Controller (Special programmed for Tesla Model 3/Y/S/X), Switch/STEAM Deck/PC/Tesla
TPARTS Multi-Device Wireless Game Controller (Special programmed for Tesla Model 3/Y/S/X), Switch/STEAM Deck/PC/Tesla
TPARTS Multi-Device Wireless Game Controller (Special programmed for Tesla Model 3/Y/S/X), Switch/STEAM Deck/PC/Tesla
TPARTS Multi-Device Wireless Game Controller (Special programmed for Tesla Model 3/Y/S/X), Switch/STEAM Deck/PC/Tesla
TPARTS Multi-Device Wireless Game Controller (Special programmed for Tesla Model 3/Y/S/X), Switch/STEAM Deck/PC/Tesla
TPARTS Multi-Device Wireless Game Controller (Special programmed for Tesla Model 3/Y/S/X), Switch/STEAM Deck/PC/Tesla
TPARTS Multi-Device Wireless Game Controller (Special programmed for Tesla Model 3/Y/S/X), Switch/STEAM Deck/PC/Tesla
TPARTS Multi-Device Wireless Game Controller (Special programmed for Tesla Model 3/Y/S/X), Switch/STEAM Deck/PC/Tesla
TPARTS Multi-Device Wireless Game Controller (Special programmed for Tesla Model 3/Y/S/X), Switch/STEAM Deck/PC/Tesla
TPARTS Multi-Device Wireless Game Controller (Special programmed for Tesla Model 3/Y/S/X), Switch/STEAM Deck/PC/Tesla
TPARTS Multi-Device Wireless Game Controller (Special programmed for Tesla Model 3/Y/S/X), Switch/STEAM Deck/PC/Tesla
TPARTS Multi-Device Wireless Game Controller (Special programmed for Tesla Model 3/Y/S/X), Switch/STEAM Deck/PC/Tesla
TPARTS Multi-Device Wireless Game Controller (Special programmed for Tesla Model 3/Y/S/X), Switch/STEAM Deck/PC/Tesla
TPARTS Multi-Device Wireless Game Controller (Special programmed for Tesla Model 3/Y/S/X), Switch/STEAM Deck/PC/Tesla
TPARTS Multi-Device Wireless Game Controller (Special programmed for Tesla Model 3/Y/S/X), Switch/STEAM Deck/PC/Tesla
TPARTS Multi-Device Wireless Game Controller (Special programmed for Tesla Model 3/Y/S/X), Switch/STEAM Deck/PC/Tesla

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