Battery is Discharged [10/2022 - 11/2023]: Description
WARNING: This page is about a different car, the 2025 Toyota Highlander, 2024 Toyota Highlander, and 2023 Toyota Highlander. However, it is still accessible from the selected car via links, so may be relevant.
General causes of battery depletion include the switches of electrical devices mistakenly left on, service life of the battery, charging device malfunction, or application of excessive electrical load by the customer, etc.
Therefore, it is important to properly grasp the usage conditions of the customer's vehicle and carry out appropriate troubleshooting (systematized failure diagnosis).
HINT:
If the power is mistakenly left on, the History of Reason for Operation may remain in the certification ECU (smart key ECU assembly).