LEMON Manuals: Even more car manuals for everyone
Home >> Toyota >> 2022 >> Corolla Cross L, AWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 71 (Battery / Charging System (M20A-FXS) - Diagnostic Codes & Symptom Tests) >> Charging System >> Auxiliary Battery is Discharged [11/2022 - ] >> Description

Auxiliary Battery is Discharged [11/2022 - ]: Description

WARNING: This page is about a different car, the 2025 Toyota Corolla Cross, 2024 Toyota Corolla Cross, and 2023 Toyota Corolla Cross. However, it is still accessible from the selected car via links, so may be relevant.

General causes of auxiliary battery depletion include the switches of electrical devices mistakenly left on, service life of the auxiliary 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 operation history may remain in the certification ECU (smart key ECU assembly).

scientia non olet · About LEMON Manuals